OPERATING INSTRUCTIONS - notices patrick modélisme
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1. OPERATING INSTRUCTIONS MODEL 4910 WARNING FOLLOW ALL THE INSTRUCTIONS IN THIS AND THE ACCOMPANYING MANUALS IN ORDER TO AVOID SERIOUS DAMAGE TO YOUR MODEL IF THESE INSTRUCTIONS ARE NOT FOLLOWED THE RESULTING DAMAGE WILL BE CON SIDERED ABUSE AND OR NEGLECT THEREBY RELEASING BOTH TRAXXAS AND YOUR DEALER FROM ANY FURTHER WARRANTY RESPONSIBILITY INTRODUCTION Thank you for purchasing the Traxxas T Maxx This sophisticat ed truck incorporates many special features including 4 wheel drive forward and reverse operation two speed forward and two speed reverse transmission the EZ Start electric starter and the reliable TRX Pro 15 engine This manual contains the instructions you will need to operate and maintain your T Maxx Look over the manual and examine the T Maxx carefully before running it If for some reason you think the T Maxx is not what you want ed then do not continue any further Your hobby dealer absolutely cannot accept a T Maxx for return or exchange after it has been run Please read ALL of the Operating Instructions and Precautions before attempting to drive the T Maxx Even if you are an experi enced R C enthusiast continue reading to learn about T Maxx s unique features Pay special attention to the mechanical and safe ty precautions outlined in the manual If you have any questions about your new model feel free to call Traxxas technical support line toll free at 1 888 TRAXXAS 1 888 872 9927 Ou2. For each CHANNEL there are two CRYSTALS one for the RECEIVER and one for the TRANSMITTER Of those two CRYSTALS the one marked with the lower number 455 MHZ lower must be inserted in the RECEIVER CLEARING YOUR FREQUENCY CLEARING your frequency means checking to be sure no one else in the area is operating on the same CHANNEL You should always do this before operating your model NICAD Ni Cd These terms stand for rechargeable nickel cadmium batteries These batteries are most economical and can be recharged up to 500 times NEUTRAL POSITION The NEUTRAL POSITION is the standing position that the SERVOS seek when the TRANSMITTER controls are at neutral TRIM TRIM is the fine tuning adjustment of the NEUTRAL POSITION of the SERVOS This adjustment is made by turning the throttle and steering trim knobs on the face of the TRANSMITTER RED POSITIVE RECEIVER i val CHANNEL 3 SERVO CHANNEL 2 CHANNEL 1 BATTERY WIRE COLORS E BLACK RED C WHITE CHANNEL 3 SHIFTING SERVO CHANNEL 2 THROTTLE SERVO INSTALLING TRANSMITTER BATTERIES Install 8 AA batteries into the bottom of the transmitter as shown in the drawing Contact Traxxas for assistance 1 888 TRAXXAS 972 265 8000 outside USA E mail us at support Traxxas com 3 INSTALLING RECEIVER BATTERIES The receiver battery holder is located underneath the battery cover Remove the battery cover by removing the two 3x10mm cou
3. After the body is completely painted remove the peel coat from the outside of the body ENGINE COOLING Notice how the back of the body has been cut to allow cooling and access to the engine The windshield should be cut out as shown to allow cooling air to reach the engine head A small opening between the rear body mounts has been cut out for the EZ Start connector e DECALS You are now ready to apply the decals The decals have been die cut for your convenience Test the position of the decals before applying them to the body Once the decals have been applied they cannot be removed without damaging them You can spray the body with window cleaner before applying the decals This will allow you to re position them Once positioned squeegee the cleaner from under the decal The decal will adhere when it dries If you have air bubbles in the decals puncture the center of each bubble with a sharp pin and push the air out If you have creases along the outer edges of a decal especially when applied to curved surfaces use a hobby knife to cut along the top of the crease and overlap the edges LIMITED WARRANTY INFORMATION Every effort has been made in component design and material selection to make your T Maxx as durable as possible Because the model is intended to be a hobby class model and operate at a much higher level of performance than a toy no warranties can be expressed or implied relating to the longevity of the p
4. Be careful not to overtighten the adjust ment screw or you may damage the tension spring Do not make constant adjustments or you will A keg loosen the locking device Do not remove the rubber 7 Turn the adjustment screw 1 8 Piuu turn counter clockwise to lower shift point earlier shifts Be careful not to loosen the adjust ment screw too much or you may cause the screw and spring to fall out requiring major disas sembly and repair 8 Use turn increments to find the approximate desired shift point 9 Check performance by running a test lap after each adjustment 10 Use s is turn increments to fine tune the shift point SHIFT POINT ADJUSTMENT Insert 2 0 Allen wrench here NOTE The transmission may not shift if the adjustment screw is turned too far in locked in first gear or too far out locked in second gear If the truck has quick acceleration and does not appear to shift the transmission is never reaching the shift point The shift point needs to be lowered by turning the adjustment screw counter clockwise If the Contact Traxxas for assistance 1 888 TRAXXAS 972 265 8000 outside USA E mail us at support Traxxas com 7 truck has poor acceleration but very high top speed the transmission is shifting into second gear almost instantly The shift point needs to be raised by turning the adjustment screw clockwise FORWARD TO REVERSE SHIFT ADJUSTMENT Included on the TQ 3 tr
5. can cause serious internal damage to the engine such as a bro ken connecting rod Move the shift button back and forth until a forward or reverse gear is selected ADJUSTMENTS SHIFT POINT ADJUSTMENT The T Maxx comes equipped with a two speed transmission When the shift point on this transmission is adjusted correctly it will maximize acceleration and improve drivability If necessary use a 2 0mm Allen wrench to adjust the shift point NOTE It is important that your engine is properly tuned and has reached full operating temperature before making shift point adjustments Stop the engine before making adjustments 1 Stop engine 2 Remove the large rubber plug from the transmission housing 3 Look into the hole in the transmission housing and rotate the spur gear until the access hole in the aluminum drum is visible 4 Once the access hole is visible hold the spur gear and use your finger to turn the primary gear shaft which extends from the transmission housing see photo Note that you will see two set screws through the access hole As you turn the primary gear shaft counter clockwise the first set screw holds the two speed mechanism to the shaft Do not loosen this screw The second set screw is the adjust ment screw 5 Insert a 2 0 Allen wrench through the clutch drum and into the adjustment set screw See diagram 6 Turn the adjustment screw 1 8 turn clockwise to raise the shift point later shifts
6. into the face of the control box The plug will only go in one way ANTENNA SETUP Sree 38 Locate the plastic tube and the antenna tip supplied in the bag with your instruc tions Insert the black antenna wire extending from the receiver housing into one end of the tube and push it all the way through Insert the tube into the antenna mount on top of the receiver housing Fold the remaining antenna wire over the top of the antenna tube and secure it with the vinyl antenna tip Under no circumstances should you ever cut your antenna wire Its length is specially tuned to the frequency band and cutting it could severely shorten the radio s range On top of the transmitter fully extend the chrome telescopic antenna RECEIVER HOUSING GLUING THE TIRES The truck tires should be glued to the rims to prevent them from spinning inside the tire Sy CAUTION Wear eye protection to prevent injury from glue spattering into your eyes 1 Glue the tires to the rim by pulling the tire back from the rim and placing a drop of thin CA glue onto the bead Pi Contact Traxxas for assistance 1 888 TRAXXAS 972 265 8000 outside USA E mail us at support Traxxas com 2 Quickly re seat the tire bead into the rim and allow to dry 3 Repeat step 1 at several points around the tire until it is secured to the wheel 4 Allow the CA glue to completely cure before driving the vehicle NOTE Th
7. not run the car if there are any exhaust leaks 10 Use Traxxas Nitro Wash spray cleaner to keep the T Maxx clean of accumulated dirt and oil Do not spray any radio components with Nitro Wash Do not spray Nitro Wash into a dirty air filter while it is installed on the engine 11 The steering servo saver will wear out over time If the steering becomes loose the servo saver should be replaced 8 Contact Traxxas for assistance 1 888 TRAXXAS 972 265 8000 outside USA E mail us at support Traxxas com PAINTING THE BODY Note Please read this entire section and plan your paint job before beginning e BUYING PAINT The body supplied with your model is molded from clear poly carbonate so that it will be lightweight and durable It should be painted on the underside so that the color will not be scratched off while running The best way to paint the body is by using thinned paints sprayed through an airbrush or spray gun If you do not have these tools the next best way is using spray can paints Whatever paint you use be sure that it is made for painting Lexan and polycarbonate Other types of paints and solvents can attack the body material and cause it to appear foggy e PREPARING THE BODY The body must be washed thoroughly with dish soap and water to remove any grease or oil i e fingerprints which may keep the paint from adhering to it Dry the body completely with a soft lint free cloth Be careful using paper towels o
8. on an indi vidual basis Be sure to include a return address and a daytime phone number MAIL OR SHIP TO Traxxas 1100 Klein Rd Plano Texas 75074 For technical assistance regarding your model call 1 888 TRAXXAS 872 9927 972 265 8000 outside of the U S A or E mail Traxxas at support Traxxas com For orders and other information call 972 265 8000 or fax 972 265 8011 REBUILDING THE ENGINE STEP 1 Unplug the blue wire from the glow plug Remove the fuel line from the carburetor pressure fitting Disconnect the red and black wires from the EZ Start motor STEP 2 Remove the exhaust hangar bolt which secures the tuned pipe to the chassis Pull the tuned pipe from the header STEP 3 Use a 2 5mm hex driver to remove the four engine mount screws from the bottom of the chassis STEP 4 Pull the engine out of the truck Remove the yellow ground wire from the engine mount Now you can completely remove the engine STEP 5 Pull the engine from the chassis Turn the engine so that the throttle linkage to the carburetor will come out Remove the EZ Start gearbox by removing the three 3x8mm roundhead machine screws Remove the 3x23mm roundhead machine screws that fasten the header to the engine Carefully remove the header to avoid damaging the gasket STEP 7 To separate the engine from the engine mount remove the four 3x8mm caphead machine screws Note You will not need to remove the engine m
9. which gives each of the wheels 1 of camber Loosening the bottom camber pivot ball with a 2 5mm Allen wrench will increase the wheel s negative camber You should not adjust the top pivot ball Loosening the top pivot ball will increase positive camber and will also change the wheel s toe in After running the truck always remember to check the front pivot balls to make sure they are tight CAMBER PIVOT BALL e SHOCKS The eight dampers shocks on your T Maxx have the most influence on its handling Whenever you rebuild your shocks or make any changes to the pistons springs or oil always do it care fully and in sets front or rear Piston head selection depends on the range of oil viscosities that you have available For example using a two hole piston with a lightweight oil will give you the same dampening as a three hole piston with heavier oil We recommend using two hole pistons with a range of oil viscosities from 10W to 40W available from your hobby shop The thinner viscosity oils 30W or less flow with less resistance and provide less dampening while thicker oils provide more dampening Use only 100 pure silicone shock oil to prolong seal life f The ride height for the T Maxx can Q be adjusted by adding or removing the clip on spring pre load spacers Note that changes in ride height will occur eats when the changes in damper angle or spring rates are made You can compensate for ride height chang
10. ED still does not light replace the glow plug with a Traxxas standard plug 3230 3 If the engine did not start in step 2 press the plunger 3 times and retry Continue this sequence until the engine starts BREAKING IN THE ENGINE VERY IMPORTANT CAUTION TRX ENGINES MUST BE BROKEN IN FOR MAXIMUM LIFE AND HIGHEST LEVEL OF PERFORMANCE THIS PROCESS MUST NOT BE SKIPPED A SHORTCUT HERE COULD SHORTEN THE ENGINE LIFE Once your engine is running it must be broken in The key to breaking in your engine is patience The break in time will take about 1 to 1 zhours During the break in period your engine may appear to malfunction with symptoms such as stalling inconsistent performance and fouled glow plugs Don t give up on it These are just break in pains that every new engine has to go through They will disappear once you get through the break in period Just keep it running and throttle on and off as smoothly as you can Sudden bursts or releases of the throttle can stall your engine Resist the temptation to tune the engine for performance and or run for extended times at wide open throttle Soon after about the fourth tank of fuel your patience will pay off with solid consistent performance DURING BREAK IN e Special break in fuels are not required Drive the model on a smooth hard surface If possible avoid running on very hot humid days Run with the body off for extra engine cooling e Do not allo
11. MIXTURE SCREW The high speed mixture screw controls how much fuel enters the engine during mid and high speed operation Turn the high speed mixture screw clockwise by hand until it stops Do not tighten or the needle may be damaged Now turn the mixture screw counter clockwise 2 2 complete turns 5 STEP 4 SETTING THE IDLE SPEED The idle screw regulates the throttle opening to control the idle speed The throttle opening at idle should be set as shown in the drawing The opening should be 1 to 1 2 millimeters at the widest point in the opening The engine may not idle well until it is warmed 170 1 5mm losen CLOSEI IPADE STEP 5 LOW SPEED MIXTURE SETTING This screw meters the fuel at low speeds The low speed mixture screw is located in the end of the carburetor inside the throttle arm This screw controls how much fuel enters the engine at idle and low throttle This adjustment will smooth the idle and improve acceleration to mid speed Make this adjustment with the throttle closed after setting the idle Gently turn this screw clockwise until it stops against the needle seat Be very careful as it is diffi cult to know when the needle has seated due to the thread hold ing material on the needle s thread Overtightening of the screw may result in damage to the needle seat Now turn the low speed mixture screw counterclockwise 1 s turns STEP 6 PRIME THE ENGINE Press the primer button built int
12. ansmitter is a forward reverse shift button which operates the channel 3 shifting servo The forward reverse shift button has been pre set at the factory to shift the truck into reverse when the button is pushed up Do not attempt to make adjustments to the shifter mechanism unless you are experiencing a problem There is also a shifting trim adjustment on the back of the TQ 3 transmitter The trim adjust ment is factory pre set for your convenience You should not have to make any adjust ments If trim adjustments for shifting become neces sary insert a long small screwdriver into the small hole in the back of the transmitter Do not turn the screwdriver more than 1 4 turn in either direction e TOE IN The T Maxx comes from the factory with zero degrees of toe in in the front and one degree of toe in in the rear You can adjust the toe in on the front and rear of the truck Set the steering trim on your transmitter to neutral Now adjust your steering turnbuckles so that both front wheels are pointing straight ahead and are par allel to each other 0 degrees toe in This will ensure the same amount of steering in both directions Adjust the rear toe control links so that the rear wheels have 1 of toe in Positive camber Negative camber There are two pivot balls which are accessible through the spokes of each of the wheels on the T Maxx From the factory the pivot balls are completely tightened into the suspension arms
13. ap head screws that fasten the cylinder head Rock the cylinder head gently from side to side to release it from the sleeve Do not lose the thin aluminum head gaskets STEP 15 Remove the backplate and the starter shaft STEP 16 The piston and sleeve are a matched set When the piston and sleeve are disassembled they must be reassembled in the same orientation Use a permanent marker to mark the location of the piston in relation to the pinning of the sleeve STEP 17 Pull the sleeve straight up and out of the crankcase If the sleeve will not move rotate the crankshaft until the sleeve pushes up STEP 18 Rotate the crankshaft to bottom dead center Lightly grab the connecting rod with a pair of needlenose pli ers and gently pull it off of the crankshaft journal STEP 19 Remove the connecting rod and piston through the top of the crankcase im STEP 20 To remove the connecting rod from the piston use a sharp pointed tool to remove the small metal G clip in the side of the piston Do not bend or distort the G clip or it have to be replaced When installing a new connecting rod use the supplied new G clip STEP 21 Remove the crankshaft by pulling it straight out of the crankcase STEP 22 The bearings are press fit into the crankcase To remove them the crankcase must be heated with a heat gun or torch The crankcase expand with heat and release the bearings To avoid the possibility of burns
14. arly in the morning or late in the evening e Most importantly use good common sense at all times 2 Contact Traxxas for assistance 1 888 TRAXXAS 972 265 8000 outside USA E mail us at support Traxxas com 7 2v BATTERY PACK AND CHARGER The EZ Start electric starter requires a 7 2 volt rechargeable nicad battery pack The battery pack straps to the bottom of the EZ Start control box with YF the supplied tie wraps The battery pack must be fully charged in order to start the engine It can be recharged with an overnight wall charger a peak detecting charger or a a 15 minute quick charger All are available from a hobby dealer REQUIRED EQUIPMENT To operate the T Maxx you will need these additional items All of these items should be available from your hobby shop AA size batteries for your transmitter 8 and receiver 4 Small Phillips head and flat screwdrivers for adjustments After run oil to protect the engine from corrosion Spare glow plugs standard plug Traxxas part 3230 or heavy duty plug Traxxas part 3231 In line fuel filter recommended Spare fuel line recommended Hobby quality thin CA glue for the tires Hobby knife gt OO Ne ONO THE TQ 3 RADIO SYSTEM The T Maxx model 4910 is equipped with the 3 channel TQ 3 radio system The following radio system terms will be used throughout the rest of these operating instructions THREE CHANNEL RADIO SYSTEM The radio syste
15. arts Parts will wear out and require replacement If any part of the model appears to be defective or incorrectly assembled when it is new before it is used it will be repaired or replaced at Traxxas discretion This warranty will not cover damage from wear abuse neglect crash es or water The radio system that is provided with the ready to run models is covered by separate warranty on a separate page included in your documentation package The radio system warranty does not cover water damage Due to the special nature of the TRX Pro 15 engine it is also covered by a separate warranty page provided with your model Traxxas reserves the right to make changes modifications and improvements to this product without notification and which may not be reflected in these documents Upgrades and improvements are not necessarily retroactive Traxxas may not provide improved or updated components free of charge for models built prior to any change in specification TO OBTAIN WARRANTY SERVICE If it has been determined that your model is somehow defective return it to Traxxas with a note describing the problem and a copy of the purchase receipt or invoice Do not return to Traxxas without first speaking with a service technician toll free at 1 888 TRAXXAS Drain all fuel and remove all batteries Remember that the warranty only covers brand new products which are defective right out of the box All other service will be estimated
16. d jump and move to their idle neutral positions NEVER TURN THE TRANSMITTER OR RECEIVER OFF WHILE THE ENGINE IS RUNNING THE MODEL COULD RUN OUT OF CONTROL The on off switch only turns the receiver on and off It does not turn off the engine 4 With the front wheels off the ground operate the steering control on the transmitter channel 1 Check for rapid operation of the steering servo and that the steering mechanism is not loose or binding If the servo operates slowly check for weak batteries Turn the steering trim control on the transmitter to adjust the servo so that the front wheels are pointing straight anead Check to be sure that the wheels do not turn more in one direction than in the other 0 TOE IN Wheels pointing straight ahead 5 Operate the throttle trigger on the transmitter to ensure that the throttle servo is operating properly When the servo is in the neutral position the carburetor should be in its idle position you will adjust the engine idle speed later When the throttle trigger is pulled all of the way the carburetor should be in the fully open position When the throttle lever is pushed forward the brake should be locked and the throttle should not close any further than when at idle Forward VA RADIO SYSTEM ADJUSTMENTS THROTTLE NEUTRAL ADJUST The throttle neutral adjustment is located on the transmitter face and controls the forward and reverse travel of the throttle trig
17. e acetone in finger nail polish remover should dis solve any glue that may come in contact with your fingers STARTING THE ENGINE STEP 1 INSTALL THE AIR FILTER Remove the protective cap from the car buretor air intake Install the rubber air filter base and pre lubed foam element onto the carburetor intake The foam air filter ele ment may be cleaned and reused Always be sure the filter element is oiled prop erly before running the engine For the best filtration use the type of oil made for foam air filters It should be available local ly from motorcycle shops and small engine repair shops Lightweight motor oil or after run oil may also be substituted When the element gets dirty clean it with dish soap and rinse Next saturate it with oil and then squeeze out the excess oil For extremely dusty condi tions special two or three stage pre lubed filters are available from Traxxas Part 4062 and 4063 t eja f NEEDLE STEP 2 FILL THE FUEL TANK Use a small fuel bottle or bulb to put fuel into the tank Only fill the tank to the bottom of the fill neck The T Maxx can carefully be refueled while the engine is running STEP 3 HIGH SPEED MIXTURE SETTING Note Your carburetor has been factory preset for break in Do not readjust your carburetor settings unless you suspect a problem The following steps are for reference only AIR INTAKE FUEL H IDLE SPEED SCREW HIGH SPEED MIXTURE SCREW LOW SPEED
18. e connecting rod bush ing Rotate the crankshaft several times to distribute the oil STEP 28 Insert the sleeve into the top of the crankcase Rotate the sleeve so that the notch in the sleeve ine up with the pin in the crankcase Holding the engine upside down will make it easier for the sleeve to go over the piston STEP 29 Install new head gaskets on the head Use one thick and one thin gasket Reinstall the head using the 3x12mm caphead machine screws Tighten the screws in small increments in a criss cross pattern until all the screws are tight STEP 30 Reinstall the starter shaft Align the notch in the starter shaft with the crankshaft journal pin arrow LEADING EDGE STEP 31 Reinstall the backplate and a new backplate gasket with the 3x8mm caphead machine screws Tighten the screws in small increments in a criss cross pattern until all the screws are tight STEP 32 Install the appropriate size ball bearing into one side of the clutch bell gear The T Maxx comes stock with a 20 tooth clutch bell gear which requires 5x11mm ball bearings STEP 33 Turn the gear over and install the other ball bearing STEP 34 Install the split beveled cone onto the crankshaft Next install the flywheel Install the clutch adapter nut with a 10mm deep socket Grip the flywheel with pliers while tightening the adapter nut STEP 35 Install the clutch shoes exactly as shown in the drawing leading edge en
19. es by changing the pre load spacers on the dampers G PRE LOAD SPACERS _ TT STORAGE After running your T Maxx use a good after run product prior to storage The chemicals used in the fuel attract moisture and can cause moisture and corrosion to form inside the engine Drain the fuel tank start the engine and run it until all of the remaining fuel is completely used up Remove the air cleaner and place the recommended number of drops usually 6 drops of the after run oil into the carburetor Now spin the engine for 2 3 seconds with the EZ Start to circulate the oil Replace the air cleaner Never store your T Maxx with unused fuel in it MAINTENANCE 1 Check the wheels and steering fr binding Check the operation of the shock absorbers 2 Check the wiring for any frayed wires or loose connections including the wires on the EZ Start quick connector Fraying or melting of the blue wire on your EZ Start system can cause your glow plugs to immediately short out 3 Check the tightness of the grub screws in the collars on the throttle and steering linkages 4 Check the tightness of the front pivot balls 5 Check the mounting of the receiver and servos 6 Check the tightness of the wheel nuts with a wrench 7 Check the fuel tank and all hoses for signs of leaks 8 Check the operation of the radio system especially the condition of the batteries 9 Check the exhaust system for leaks cracks or tears Do
20. gagement Next install a 5x8mm Teflon washer followed by the clutch bell gear with bearings installed Install the remaining 5x8mm Teflon washer followed by the E clip see step 9 STEP 36 Reinstall the carburetor header a NEW glowplug and engine mount Use a new header gasket when re installing the header on the engine Reinstall the engine in the truck in the reverse order of removal Don t forget to reconnect the yellow grounding wire to the engine mount The rebuilt engine must now be broken in N gt
21. ger There are two settings 50 50 which allows equal travel for both forward and brake and 70 30 which allows more travel for throttle and less for brake Change the adjustment by press ing the button and sliding it to the desired position 50 50 is the recommended setting while running the T Maxx TOTAL TRIGGER MOVEMENT SERVO REVERSING SWITCHES On the front of the transmitter there are three switches One for throttle one for steering and one for shifting Moving the switches reverses the direction of the corresponding servos For example if you turn your steering wheel right and the model moves left then switch the steering servo reversing switch to correct the servo direction You may need to adjust the corre sponding trim control after moving a servo reversing switch 4 Contact Traxxas for assistance 1 888 TRAXXAS 972 265 8000 outside USA E mail us at support Traxxas com 6 Operate the forward reverse shift button on the transmitter With the shift button pushed down the truck will only operate in forward motion Pushing up on the shift button shifts the transmission into reverse Check for normal operation of the shifting servo In reverse the shifting servo should extend the transmission shifter from the transmission housing Si PREPARING TO RUN e INSTALLING THE EZ START BATTERY Use tie wraps to secure a fully charged 7 2 volt battery back to the EZ Start control box Plug the battery connec tor
22. ing ease as a good special purpose car fuel Some fuels are capable of destroying your TRX Pro 15 engine f you must use a fuel other than those listed contact TRAXXAS at 1 888 TRAXXAS to find out if the fuel is safe for use with TRX engines CAUTION ALWAYS FOLLOW THE PRECAUTIONS PRINTED ON THE CONTAINER OF FUEL KEEP IT AWAY FROM FLAMES AND CHILDREN THE MIXTURE IS FLAMMABLE AND POISONOUS FUEL BOTTLE quart so a smaller bottle with a dispensing tube is required to fill the fuel tank The fuel tank in the T Maxx has a capacity of 125cc f The fuel bottle should always be capped to prevent the fuel from evaporating and becom ing contaminated with debris or moisture The l N alcohol and nitro contents of the fuel will evapo Fuel is usually purchased by the gallon or i rate thus upsetting the fuel balance and spoiling i the fuel Do not use old or dirty fuel iSl i Traxxas 5050 Fuel Bottle PERSONAL SAFETY PRECAUTIONS Every precaution outlined in this manual needs to be followed to help ensure safe operation Operate your T Maxx sensibly and with care and it will be exciting safe and fun for you and your spectators Failure to operate your T Maxx in a safe and respon sible manner could result in property damage and serious injury You alone must see to it that the instructions are followed and the precautions are adhered to The T Maxx is not intended for use by children without the supe
23. m in your model consists of the RECEIVER the TRANSMITTER and the SERVOS It has three channels one to operate the throttle one to shift the transmission and one to operate the steering Antenna Throttle Neutral Adjust __ Steering Wheel Throttle Trim Steering Trim Reverse Shift Forward Shift Power Switch Battery Compartment _ Servo Reversing Switches TRANSMITTER The TRANSMITTER is the hand held radio unit which sends throttle and steering instructions to the model RECEIVER The RECEIVER is the radio unit inside the model which receives signals from the TRANSMITTER and relays them to the SERVOS SERVO The SERVOS are the small motor units in the model which operate the steering shifting and throttle mechanisms FREQUENCY BAND The FREQUENCY band is the radio frequency that the transmitter uses to send signals to the model All Traxxas RTR models operate on a 27 MHZ FREQUENCY BAND CHANNEL The 27 MHZ FREQUENCY BAND is divided into 6 CHANNELS so that up to six cars can be operated simultaneously These CHANNELS are referred to by their number and flag color The chart below lists the channels and their flag colors 27MHZ FLAG COLOR CH TRAXXAS PART 26 995 BROWN 1 2031 27 045 RED 2 2032 27 095 ORANGE 3 2033 27 145 YELLOW 4 2034 27 195 GREEN 5 2035 27 255 BLUE 6 2036 CRYSTAL X TAL The CRYSTAL is the plug in device that determines which channel the RADIO SYSTEM will operate on
24. n the outside of the body as they can scratch the plastic Do not cut out the body until after it is painted Use the supplied adhesive tape masks to mask the windows Mask off any stripes or custom effects with either masking tape or special tape made for striping This special tape is available from automotive paint supply stores and will provide sharper edges than masking tape For easy custom colored striping automo tive pinstriping tape can be applied to the inside of the body and painted over Be sure that all of your tape and masks are fully pressed down burnished so that the paint will not run or bleed underneath Usually the darker colors are painted first followed by the lighter colors If your paint B a scheme would be easier to mask by cover Ereet ing the dark areas and spraying them last be sure the lighter colors are opaque enough to prevent the darker color from showing through Lighter colors can be backed with silver to help make them opaque SPRAYING THE BODY Read the directions on your bottle or can of paint and shake mix or thin the paint as required It is very important to avoid breathing the paint vapors as they are extremely harmful Spray the paint outdoors in well ventilated areas only Apply the paint to the body sparingly and in light coats Be patient Let the paint dry fully in between coats This will prevent accidentally smearing wet paint Take extra care when masks are being removed
25. normal operating temperature Refill the fuel tank prime the engine and restart Drive the truck for a few minutes until the engine is warm Turn the mixture screw in clockwise 16 of a turn and continue driving Note any increase in speed and performance Continue to lean the fuel mixture in 1 6 turn increments until you no longer see any performance increase At this point the fuel mixture is too lean Turn the mixture screw back out counterclockwise the previous 146 of a turn to reach the optimum fuel mixture setting Turn the mixture screw out another t s of a turn for non race applications This will extend engine component life This setting will vary slightly with each engine depending upon fuel brand temperature humidity etc Watch closely for any signs of overheating These include Steam or smoke coming from the engine surfaces Lagging during high speed acceleration as if running out of fuel Popping or clattering sound when decelerating detonation Idle speed will surge or possibly diminish to the point of stalling SETTING THE IDLE SPEED Now that the engine mixture is tuned the idle speed may be set too high Set the throttle trim on the transmitter so that the brake on the truck is applied Next reset the idle speed by removing the air filter and adjusting the the idle speed screw on the side of the carburetor see drawing on page 12 Turn the screw out counter clockwise to reduce the idle Re adjust
26. ntersunk self tapping screws underneath the chassis The on off switch is mounted in the cover Install 4 AA batteries into the battery holder Alkaline batteries should be used Place the battery holder into the battery cover with the cushioning foam Secure the battery cover to the chassis using the two 3x10mm countersunk screws RADIO SYSTEM OPERATION Your radio system was pre adjusted before it left the factory however the adjustment should be checked prior to running the truck 1 Before you ever turn your radio system on you must clear your frequency There are six different channels numbered 1 through 6 Each of the six channels is represented by a color Look at the crystal in the back of the transmitter to determine which of the channels your truck is operating on Clearing your frequency means checking to be sure that no one else in the area is operating on the same channel 2 TIP Always turn the trans mitter on first and off last This will prevent the model from receiving stray signals and run ning out of control Slide the transmitter switch to the on position A steady red light should illuminate A flashing red light indicates weak batteries Weak batteries will limit the range of the radio signal between your transmitter and receiver Loss of the radio signal can cause you to lose control of the truck 3 Turn the truck on Tthe switchis located on the battery cover The servos shoul
27. o the fuel tank several times until the fuel moves through the fuel line and into the carburetor Primer Button STEP 7 SHUTTING OFF THE ENGINE Before starting the engine it is important to know how to shut it off The correct method is to pinch and hold the carburetor s fuel line while running at idle speed until the engine dies STEP 8 START THE ENGINE Before starting your engine review the safety and driving precautions in this manual 1 Turn the radio system on trans mitter then receiver Place the truck against a curb or some other immovable object to prevent it from moving forward 2 Connect the plug from the EZ Start control box into the connector mounted in the rear body mount of the truck The plug is keyed so it will only insert one way Preheat the plug by removing one of the motor wires and holding te start button for 5 seconds Reconnect the motor wire and press the start but ton on the EZ Start to turn over the engine Do not hold for more than 5 10 seconds to start the engine Once the engine has started it may be necessary to continue to hold the start button to keep the plug lit until the engine has warmed up Note The red LED on the EZ Start will light when the start but ton is pressed This indicates that the glow plug is hot ignit ed If the LED does not light make sure that the glow plug connector blue wire is firmly attached to the glow plug If the connection is secure and the L
28. or other damage do not attempt remove the bearings Clean the bearings by flushing them with denatured alcohol and then place one or two drops of after run oil on the races STEP 23 Before installing a new connecting rod you can increase engine life by polishing the crankshaft jour nal Use 1200 grit sandpaper to remove the surface scratches followed by liquid metal polish to buff the crankshaft journal to a bright smooth shine Rinse thoroughly with denatured alcohol and lube with after run oil STEP 24 Use the 1200 grit sandpaper and the liquid metal pol ish on the wrist pin also Rinse thoroughly with dena tured alcohol and lube with after run oil STEP 25 To assemble the connecting rod and piston place a drop of caster oil in the top end of the connecting rod Insert the wrist pin through the piston and the top of the connecting rod Secure the wrist pin with the G clip Make sure the G clip fits securely into the groove machined in the piston Be careful not to scratch the sides of the piston STEP 26 Reinstall the crankshaft into the engine and make sure that it spins freely Insert the connecting rod and piston assembly through the top of the crankcase The G clip normally faces the carburetor Put a drop of castor or after run oil in the bottom end of the connecting rod Use your fingers to gently push the end of the con necting rod over the crankshaft journal STEP 27 Place another drop of oil on th
29. ount for a basic rebuild of the engine Do remove the engine mount if you exchanging the engine under the Lifetime Engine Replacement Plan STEP 8 Removing the carburetor is not necessary to rebuild the engine unless you intend to replace the internal bearings of the engine Remove the carburetor by loosening the 3mm locknut and pulling the carburetor straight up Do not lose the rubber O ring STEP 9 Use the tip of a small screwdriver to remove the E clip which holds the clutch bell gear STEP 10 Remove the clutch bell gear and the clutch shoes Note that there are two 5x8mm Teflon washers one on each side of the clutch bell gear Check the clutch shoes for excessive wear or cracking around the pin holes If the clutch shoes are worn to the point that the clutch spring contacts the clutch bell then the shoes must be replaced STEP 11 Grip the flywheel with a pair of pliers locking pliers work best Remove the clutch adapter nut with a 10mm deep socket Hold the engine just above your workbench and tap the fly wheel from behind with a non marring hammer plas tic or wood Several easy blows may be necessary to release the flywheel and split beveled cone STEP 12 The flywheel and the split beveled cone should pull smoothly off of the crankshaft STEP 13 Use a 5 16 inch nut driver to remove the glow plug and copper gasket STEP 14 Use a 2 5mm Allen wrench to remove the four 3x12mm Woy c
30. rvision of a responsible adult Traxxas shall not be liable for any loss or damages whether direct indirect spe cial incidental or consequential arising from the use mis use or abuse of this product and any chemical or accessory required to operate this product e The fuel is dangerous and poisonous Follow all of the directions and precautions on the fuel container e The fuel can look like a cool drink to a young child Keep it out of children s reach e The fuel is flammable Do not allow sparks flame or smoking in the presence of model fuel e The engine emits poisonous carbon monoxide gas Always run the model in a well ventilated area Never attempt to run the engine indoors The engine and exhaust become extremely hot during use Be careful not to touch these parts especially when refueling Do not drive the T Maxx at night Never under any circumstances operate the T Maxx in crowds of people The T Maxx is very fast and could cause injury if allowed to collide with anyone Because the T Maxx is controlled by radio it is subject to radio interference from many sources that are beyond your control Since radio interference can cause momentary losses of radio control always allow a safety margin in all directions around the model in order to prevent collisions e The engine can be very loud If the noise makes you uncomfortable wear ear protection Be considerate of your neighbors by not running your model e
31. the throttle trim on the transmitter as necessary The idle must be set as low as possible in order for the engine to run reliably If the idle speed is set too high forward reverse shifting performance could be adversely affected Only set the idle speed when the engine is at its normal operating temperature FORWARD REVERSE OPERATION Forward and reverse gears are selected with the shift button located in the transmitter handle grip The switch is normally in the down position forward To engage reverse bring the T Maxx to a complete stop and push the shift button up Allow at least one second count one thousand and one and then apply 3 4 to full throttle Abrupt engine throttle solidly locks the transmission into gear If you accelerate very slowly after a direction change the T Maxx may appear to malfunction by slipping as the transmission tries to lock in to gear To return to forward direction use the same procedure and move the shift button down If the T Maxx does not shift into reverse check the following 1 IDLE SPEED The engine idle speed needs to be set as low as possible and still allow reliable running If the idle speed is set too high the T Maxx will not shift 2 DRIVELINE If the T Maxx driveline is heavily loaded such as being stuck on an incline it may not shift into reverse If accidentally neither forward or reverse is engaged neu tral do not rev the engine Revving the engine with no load
32. tside the U S call 972 265 8000 Technical support is available Monday through Friday from 8 30am to 9 00 pm central Time Technical assistance is also available through our website at www traxxas com E mail us at support Traxxas com We hope that you will enjoy many hours of fun with your new T Maxx FUEL CAUTION ALWAYS FOLLOW THE PRECAUTIONS PRINTED ON THE CONTAINER OF FUEL KEEP IT AWAY FROM FLAMES AND CHILDREN THE MIXTURE IS FLAMMABLE AND POISONOUS Fuel is the most critical component for making your engine perform properly Improper fuels will cause hard starting poor performance and excessive wear on the engine For the best performance from your TRX Pro 15 engine use Traxxas Top Fuel Traxxas Top Fuel is the only model engine racing fuel which exceeds all of the Traxxas engine warranty requirements is specially formulated to resist heat and is guaranteed to provide the best performance and longest life from your Traxxas engine Traxxas cannot guarantee the quality and consistency of other manu facturers fuels If Traxxas Top Fuel is not available from your hobby dealer the fuels listed below have been tested by Traxxas and determined to be satisfactory for use in the TRX Pro 15 Dynamite Blue Thunder Power Master Formula 16 Byron s Originals Race 1000 2000 Morgan s Omega Omega fuel is an airplane fuel which may be used The higher oil content however will not deliver the same performance and tun
33. w the fuel tank to run completely empty leading possibly to a burned plug An extremely low fuel level causes the fuel mixture to be too lean Keep extra glow plugs handy The break in process because of the engine running rich can cause deposits to form on the glow plug leading to failure e Turn the mixture screw needle clockwise in to lean the mix ture and counter clockwise out to richen the mixture THE FIRST TANK OF FUEL Once the engine is started drive the model slowly for the first few minutes to warm the engine Ease in and out of the throttle slowly Vary your speed between low and medium throttle until the first tank of fuel is almost empty Do not run at full speed dur ing the first tank of fuel Do not rev the engine with the wheels off the ground High no load RPMs can damage the engine usually resulting in a broken connecting rod Stop the engine and allow it to cool for 5 10 minutes before proceeding DRIVING PRECAUTIONS e The radio system is not waterproof Avoid driving through puddles wet grass or mud Water could damage the electronics e Do not continue to operate the T Maxx with low batteries After the battery power drops below a certain point the model will continue with the last command it had from the transmitter Indications of low battery power include slow operation and sluggish servos On the transmitter a flashing red light indi cates low transmitter batteries e Do not drive the T Max
34. x at night on public streets or in large crowds of people e f the T Maxx becomes stuck do not continue to run the engine Remove the obstruction before continuing to drive e Do not attempt to push or tow objects with the T Maxx e The T Maxx is controlled by radio It is subject to radio interfer ence from many sources beyond your control Since radio interference can cause momentary losses of control allow a safety margin around the truck in order to prevent collisions e Use common sense whenever you are driving your T Maxx Intentionally driving in an abusive and rough manner will only result in poor performance and broken parts 6 Contact Traxxas for assistance 1 888 TRAXXAS 972 265 8000 outside USA E mail us at support Traxxas com TANKS TWO FOUR Turn the high speed mixture screw clockwise 15 and run through the second tank of fuel Repeat this process for the third and fourth tanks of fuel Rich setting Tank 1 2 turns out 15 Tank 2 15 Tank 3 15 Tank 4 Slightly rich Top speed testing This amount will vary on each engine Correct setting Performance at 90 Maximum lean position 2 turns out Important Do not lean the high speed mixture less than 2 turns out from closed see illustration Also be sure to allow the engine to cool between each run TANK FIVE AND BEYOND The engine can now be tuned for power Fine tuning adjustments should be made to the engine when it is at its
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