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OPERATING INSTRUCTIONS

1. ae l c mM 7 7 MUR NEN mer n 2 0012 g 12114 52831 iem ad E F 7 dft d gm It c LS LR S 0 lu N n u M l 30601 bd cm 4 T TET a C a D 12126 3021 CI 30709 Py 2 l 8 a A9 E c E A AM 20714 Q 7 i wd d s QU B T 9 e ae F 12845 0 en a S ger To order replacement parts visit your nearest Magnum Engines dealer or call the Magnum Engines Service Center direct at 1 714 963 0329 Parts are listed here in numerical order DESCRIPTION Valve Pushrod Set Valve Set Rocker Arm Set Rocker Arm Cover with Screws Cam Gear Cover with Screws Cylinder Head with Complete Valve Set Carburetor Rotor Bolt Set Fuel Nipple No Gasket Backplate Bolt Set Intake Pipe Screws Throttle Arm Lock Nut Throttle Arm Throttle Barrel Sprinc Fuel Nipple Needle Valve O Ring Needle Valve Detent Spring Rear Bearing Crankcase Backplate Fixed Length Bushing Front Bearing Crankshaft Backplate Gasket Cylinder Head Gasket Set Carburetor Hold Down Bolt Connecting Rod Wrist Pin Assembl Drive Washer Prop Nut and Washer Set Piston Cylinder Sleeve Piston Ring Muffler Assembly with Exhaust Pipe Cam Gear Bearing Set Cam Gear Cam Gear Cover Gasket Ca
2. If the spinner cone rubs against the propeller this could lead to propeller damage and eventual propeller failure PROPELLER FUEL amp GLOW PLUG L Propeller Recommendation The diameter and pitch of the propeller needed for the XL 30RFS will vary greatly depending on the application the engine is used in The weight drag and the type of model and how you intend to fly it are all factors in determining the correct size of propeller to use Experimentation will be necessary to find the optimal size propeller for your particular application Ideally you want to use a propeller that the engine will turn in the 9 000 12 000 R P M range on the ground yet power the airplane sufficiently Using a propeller that is too small will cause the engine to run at too high an R P M Using a propeller that is too large will cause the engine run at too low an R P M and cause the engine to lug down too much In both instances this will lead to difficulty in making needle valve adjustments premature engine wear and eventual engine failure Propeller Size Recommendations Use a 9 x 5 propeller for the break in procedure Glow Plug Recommendation Glow plugs can make a big difference in how your engine performs For the XL 30RFS we recommend using a hot type of glow plug intended specifically for four cycle engines Do not use cold glow plugs or those intended for two cycle engines Using the wrong type of glow plug will
3. RECOMMENDATIONS The following items are recommended for use with the XL 30RFS engine These items are recommended for initial start up and running Please read through the Operating Instructions for further details Fuel Power Master 10 2 Stroke Blend 275180 for break in Power Master 10 4 Stroke Blend 275185 for normal use We suggest using Power Master brand fuels Power Master fuel comes in 10 and 15 nitromethane contents that can be used in the XL 30RFS engine Power Master fuels are blended using only high quality nitromethane methanol Castor Oil and synthetic lubricants to provide high power output along with easy starting and unmatched lubricating and heat dissipation qualities For the extra lubrication necessary for break in use 10 2 stroke blend After break in for extra performance use 10 15 4 stroke blend L Fuel Tank Hayes 8oz Fuel Tank 070 The Hayes Soz fuel tank is a perfect match for the XL 30RFS It is large enough to give you about 15 20 minutes of run time at full throttle and is possibly the easiest fuel tank to assemble and maintain Glow Plug Thunderbolt 4 cycle 115490 The Thunderbolt 4 cycle glow plug is designed to be used in four stroke engines using fuels containing 10 20 nitro content and in any envi ronment It is a hot type of glow plug for easy starting excellent transi tion and incredible top end The plug is also very durable
4. cause the engine to run erratic and make it difficult to tune properly Engine Bolts and Firewall Requirements The XL 30RFS engine should be mounted to a glass filled motor mount Hayes Products Part 011 recommended or to an integrated wood beam mount built into the fuselage structure of the aircraft Use only high quality 4 sheet metal screws and washers to mount the engine to a glass filled mount Use 4 40 socket cap screws washers and locknuts to mount the engine to a wood beam mount If using a glass filled mount the firewall in the airplane should be aircraft grade plywood no less than 3 16 thick The firewall should also be reinforced to meet the torque and power of the engine Muffler and Exhaust Pipe Installation The muffler threads into the exhaust pipe which then threads into the side of the cylinder head Both assemblies are held in place using two nuts First thread one nut onto the muffler Thread the muffler into the exhaust pipe The muffler should be threaded in no less than 1 4 to prevent vibra tion from damaging the threads Once you have threaded the muf fler into the exhaust pipe use an open end wrench and tighten the nut up against the exhaust pipe This will prevent the muffler from loos ening The exhaust pipe is adjust able to better match the scale ap pearance and installation of your particular application Thread the second nut onto the exhaust pipe Thread the exhaust pipe into the
5. cylinder head The pipe should be threaded in no less than 1 4 to prevent vibration from damaging the threads Once you have threaded the exhaust pipe in place and into the proper position for your application use an open end wrench and tighten the nut against the cylinder head This will prevent the exhaust pipe from loosening Exhaust Pipe LJ Fuel Tank Size and Orientation to Carburetor Ideally the stopper in the fuel tank should be even with the high speed needle valve or just slightly below the high speed needle valve Most models will only allow the fuel tank to be mounted higher than the ideal location A fuel tank that is positioned higher than the ideal location usu ally doesn t pose any problem except when it is mounted excessively higher and or used in conjunction with an inverted mounted engine or during ex treme aerobatic flight If mounting your engine inverted it is advised to lower the fuel tank so the stopper is slightly below the high speed needle valve Doing this will prevent fuel from siphoning into the engine and flooding it when the fuel tank is full If you cannot lower the fuel tank far enough we suggest lowering it as far as can be allowed in your particular application The size of the fuel tank used should be 60z 8oz depending on the model and the length of flights desired Use of a 8oz tank will provide between 15 20 minutes of run time at full throttle Use of a fuel tank any larger than 8oz can lead
6. free to contact us at the address or phone number listed Magnum Engines Customer Care 18480 Bandilier Circle Fountain Valley CA 92728 Phone 714 963 0329 Fax 714 964 6236 E mail service globalhobby com SOLUTION A Replace glow plug with a new one B Fully charge glow starter and or replace C Use an electric starter to start engine D Reset idle mixture to factory setting E Replace with new fuel F Remove glow plug and expel fuel from cylinder G Check and or replace fuel tank assembly H Replace fuel lines and or tighten all engine bolts I Readjust valves to correct setting A Replace fuel lines and or tighten all engine bolts B Reset high speed needle valve to factory setting C Reset idle mixture to factory setting D Check and straighten fuel lines E Replace fuel tank A Balance propeller B Tighten motor mounting bolts A Replace with new recommended glow plug B Replace with new recommended fuel C Reset high speed needle valve to leaner setting D Set idle mixture richer E Set idle mixture leaner F Replace fuel lines and or tighten all engine bolts G Replace with one size smaller propeller H Readjust valves to correct setting A Adjust throttle linkage to close throttle barrel completely A Richen high speed needle valve B Open larger vents in cowling to allow air to exit C Use fuel with recommended oil content D Allow engine further break in time A Richen high speed nee
7. run dry of fuel L Usea high quality after run oil in the engine after you have purged the engine of fuel Inject the oil into the engine through the carburetor Flip the propeller several times to distribute the lubricant inside the engine Wipe the outside of the engine dry using a soft cloth Use a fuel filter between the fuel tank and the carburetor SERVICE All Magnum engines returned for warranty service must be within the war ranty terms as stated on the warranty card provided with your engine Do not return the engine to the place of purchase They are not authorized or equipped to perform warranty work on Magnum products When request ing warranty service please observe the following Always send the complete engine including the carburetor and muffler The engine must be removed from the model Include a note detailing the problem or service you are requesting Ser vice cannot be provided without this information Include your daytime phone number in the event we need more details pertaining to the service requested You may request an estimate of services at the time you return your engine for service An omission of this request implies permission for the Magnum Service Center to service your engine at our discretion Include a method of payment for any service charges If not specified the unit will be returned to you C O D Please include a check or money order in the amount
8. 0 is ready for flight Fly the airplane with the engine set as rich as possible but with adequate power to fly the airplane After each flight lean the mixture slightly Continue to do this for about 5 flights At this point the engine should hold a good setting on the high speed needle valve and you can begin to fine tune the needle valve settings to increase performance LJ Fuel Recommendation Fuel can make a big difference in the way your engine performs We rec ommend using two types of fuel with the XL 30RFS For the break in period you must use a fuel containing no more than 10 nitromethane and no less than 20 Castor Oil lubricant Use of fuel containing more than the recommended percentage of nitromethane or any synthetic lubricants will cause the engine to run too hot and result in excessive wear and engine failure in a very short period of time Once the engine has been adequately broken in about 1 gallon of the recommended break in fuel a fuel con taining up to but no more than 15 nitromethane and no less than 16 Castor Oil and synthetic lubricant blended fuel can be used Note We do not recommend using fuels that contain only synthetic lubricants Synthetic lubricants have a much lower flash point than Cas tor Oil lubricants Flash point is the point at which the lubricant begins to actually burn and loses it s lubricating qualities Using fuels containing a blend of Castor Oil and synthetic lubricants res
9. The XL 30RFS can be started using an electric starter or it can be started by hand For safety and ease of starting especially when the engine is new we recommend using an electric starter The following two proce dures should be done with the power to the glow plug off LJ Starting by Hand When starting the engine by hand always use a chicken stick If you must use your finger wear a good leather glove to prevent the prop from cutting you Never just use your bare hand or serious injury could result To make the engine easier to start by hand it should first be primed This is done by opening the carburetor completely and choking the engine by putting your finger over the muffler opening With your finger over the muffler open ing pull the propeller through the compression stroke 2 3 times This will draw fuel into the engine Over priming the engine can cause the engine to hydro lock or flood This is a result of too much fuel in the engine before it actually fires Remove your finger from over the muf fler opening and pull the propeller through the compression stroke once to check for a hydro locked condition Never try to start the engine if it is in a hydro locked state This could cause serious damage both to your self and to the engine L Starting with an Electric Starter When using an electric starter it is not necessary to prime the engine The starter turns the engine over fast enough that the engine d
10. XL ORFS OPERATING INSTRUCTIONS SPECIFICATIONS Displacement 5 0cc 30cu in DO RR 19 7mm ORE aar A 16 4mm Picea RPM ass 2 200 13 000 Weight w Muffler sss 9 602 ranksbalt Thread S126 ece 1 4 28 WARNING Magnum model engines will consistently give you dependable perfor mance and reliability and will be a source of satisfaction and pleasure if you follow these instructions as to the engine s proper and safe use You alone are responsible for the safe operation of your engine so act sensi bly and with care at all times This Magnum model engine is nota toy It is a precision built machine whose power is capable of causing serious injury to yourself and others if abused misused or if you fail to observe proper safety precautions while using it Keep spectators especially small children at least 20 feet away from the engine while it is running Mount the engine securely in the airplane or on a suitable engine test stand to run the engine Follow the mounting instructions in your kits instruction manual or on the plans for individual mounting recommenda tions Do not clamp the engine in a vise to test run it Use the recommended size propeller and follow the proper procedure for mounting the propeller Use the correct size wrench to tighten the propeller nut and the safety nut Do not use pliers Inspect the spinner propeller and propell
11. and able to withstand repeated use day after day L Propeller APC 9 x 5 Propeller LP09050 We have found that the engine runs at it s best using APC brand props They are designed to be very efficient run quiet at high R P M s and are also durable Use this size prop to break in your engine then change to the prop that best suits your application Use the guide in the Operating Instructions to help you find the right size propeller Glow Driver Magnum Glow Starter w Meter 237438 The Magnum glow starter is an excellent choice for heating the glow plug It uses a Sub C Nicad includes a meter to determine the quality of your glow plug and it also includes a charger to recharge the battery It s a very economical product to purchase and can be used with any engine that uses a glow plug Motor Mount Hayes Motor Mount 011 The Hayes motor mount is a glass filled type that mounts to a ply wood firewall in the model It is easy to install and rugged yet in the event of a crash will break away to minimize damage to the engine and or airframe TROUBLESHOOTING GUIDE This troubleshooting guide has been provided to help you diagnose and solve most problems that you may encounter with your Magnum XL 30RFS engine Most problems encountered can be solved by carefully following the problem cause solution sections below If you cannot solve the problem using this troubleshooting guide please feel
12. dle valve B Return engine to Magnum Engines Service Center CAUSE A Failed glow plug B Glow Starter not charged and or faulty C Engine not being turned over fast enough D Idle mixture screw set too lean E Old or contaminated fuel F Engine flooded with too much fuel G Faulty fuel tank and or stopper assembly H Air leak in fuel system and or engine I Valves out of adjustment A Air leak in fuel system and or engine B High Speed Needle Valve fully closed C Idle mixture screw set too lean D Fuel lines kinked E Defective fuel tank A Propeller out of balance B Engine and or motor mount loose A Failed and or wrong type glow plug B Old and or wrong type fuel C High speed needle valve set too rich D Idle mixture set too lean E Idle mixture set too rich F Air leak in fuel system and or engine G Propeller too large H Valves out of adjustment A Throttle servo linkage out of adjustment A Engine running too lean B Cowl too restrictive C Wrong type of fuel used D Engine not fully broken in A Engine running too lean B Piston ring worn PROBLEM 1 Engine does not start 2 Engine does not draw fuel 3 Engine vibrates excessively 4 Engine does not transition 5 Throttle barrel does not close completely 6 Engine Overheats 7 Engine stops abruptly 90219 zu s a cs
13. e familiar with therefore you will not feel much hesitation as the pis ton moves through the top of the stroke A ringed engine does not have any taper in the sleeve Ring tension is what seals the combustion chamber When the engine is brand new it will not feel like it has much compression This is because the ring has not yet been seated with the sleeve After the engine has been broken in compression will increase The break in pro cedure will guide you through the steps necessary to properly break in your new XL 30RFS ringed engine Please follow the steps closely The break in process allows the engine parts to perfectly fit to each other and properly protect each part from premature wear The engine should be broken in using a fuel that contains no more than 10 nitromethane and no less than 2096 Castor Oil lubricant Synthetic lubri cant fuels should not be used during the break in procedure For the break in procedure we recommend mounting the engine into the airplane it will be used in This way the muffler fuel tank and throttle linkage can all be tested in combination with the engine If your airplane uses a cowling it should be removed during the break in procedure L 1 Turn the high speed needle valve out 2 1 2 turns from the fully closed position If you are using an electric starter to start the engine follow the 2 procedure in the previous section If you are starting the engine by hand follow that pr
14. e muffler opening and flipping the prop through compression 2 3 times If you will be using an electric starter do not prime the engine The starter will turn the engine over fast enough to draw fuel on it s own Connect the glow starter to the glow plug Open the carburetor 3 barrel to about 1 4 throttle and start the engine If you are starting the engine by hand you will need to vigorously flip the prop several times before the engine will start Once the engine begins running immedi ately turn the high speed needle valve in to keep the engine running Advance the throttle to full while turning the high speed needle 4 valve in to keep the engine running The engine should be producing a very noticeable white exhaust from the muffler and sound like it 1s run ning rough Allow the engine to run only for about 5 minutes then shut the engine off ll 5 Now that you have started your XL 30RFS engine it must be properly broken in Proper break in will seat all of the moving parts particularly the piston ring and valves This procedure takes about 30 minutes of run time and is highly recommended An engine that is properly broken in will produce more power be more user friendly and last much longer than an engine that does not receive a break in period For this reason we highly recommend following the break in procedure detailed in the Operating Instructions before you run the engine further OUR
15. ended accessories Also included is general information about the accessories needed for the Magnum XL 30RFS engine that we hope you will find helpful This Quick Start Guide should not be used as a replacement to the Operating Instructions included rather 1t should be used along with the Operating Instructions We highly recommend reading through the Operating Instructions to familiarize yourself with each part of the engine along with the proper procedures for engine break in tuning care and maintenance QUICK STARTING L Engine Preparation Mount the engine to the recommended motor mount A wood 1 beam mount built into the airframe would also be sufficient Install the muffler to the engine using the two nuts provided 2 The muffler can be rotated to better suit the installation in your model Be sure to tighten the two nuts securely to prevent the muffler from loosening Using a 1 4 drill bit drill out the center hub in the propeller 3 Install the propeller to the engine using the propeller nut provided Tighten the propeller nut securely using an adjustable wrench L Engine Starting Carefully turn the high speed needle valve in completely until it 1 stops then turn the needle valve out 2 1 2 turns This is the mixture setting for initial starting ll 2 If hand starting prime the engine by opening the throttle barrel completely placing your finger over th
16. er Nipple 5mm diameter wire of the necessary length Loosen the set screw in the side of the needle valve insert the wire into the end of the needle valve and tighten the set screw firmly If the extension is more than 3 long we recommend supporting the outer end of the extension to prevent excessive vibration Propeller Installation Note Before installing any propeller it must be properly balanced Running an engine using an improperly balanced propeller can lead to excessive vibration which will cause excessive stress and wear on both the engine and the airframe Overall performance will also be reduced Bal ance the propeller using the recommended method stated by the propeller manufacturer Several products are available to properly balance propel lers Ask your local retailer for more information about these items Using a 1 4 drill bit or a prop reamer drill out the hole in the propeller hub to fit the crankshaft The crank shaft is 1 4 in diameter Slide the propeller onto the crankshaft up against the drive washer Slide the propeller washer up against the pro peller Thread the prop nut onto the crankshaft Tighten the prop nut completely to secure the propeller in place Use the proper size open end wrench or adjustable wrench Do not use pliers DR Prop Nut Note If you are installing a spinner onto your engine the cone of the spinner must not rub against the propeller
17. er nut on a regular basis looking for any signs of nicks cracks or loosening To stop the engine adjust the throttle linkage to completely close the throttle barrel and therefore cut off the fuel air supply You can also pinch the fuel line to stop the engine but only if it is accessible Do not throw anything into the spinning propeller or attempt to use your hands to stop the engine amp While the engine is running stand behind the engine to make any ad justments to the needle valves Do not reach over or around the propeller Do not lean towards the engine Do not wear loose clothing or allow any thing to be drawn into the spinning propeller while the engine is running If you need to carry your model while the engine is running be con scious of the spinning propeller Keep the airplane pointed away from you and others at all times Do not use tight fitting cowls over the engine They can restrict air from flowing over the engine and result in engine damage from overheating ENGINE INSTALLATION L Engine Orientation The Magnum XL 30RFS engine can be orientated in any position on the firewall Keep in mind that if you mount the engine inverted carburetor adjustments will need to made differently and the fuel tank may need to be lowered See fuel tank size and orientation to carburetor on next page Engines mounted inverted tend to run richer during idle and transition to full throttle and are generally more dif
18. ficult to setup and tune properly INTRODUCTION The Magnum XL 30RFS is a single cylinder overhead valve four stroke engine incorporating ringed piston technology for long life and high power output under extreme conditions A dual needle carburetor is utilized for easy and precise mixture adjustments A polished aluminum muffler is included to keep the noise to a minimum without sacrificing power The engine was designed by expert engineers and built by master craftsmen using only the highest quality materials and CNC machinery These quali ties provide the long life and dependability you have come to expect from an engine of this caliber BECOMING FAMILIAR WITH THE MAGNUM XL 30RFS If you are familiar with the operation of model engines or just can t wait to run your new engine please read through the Quick Starting Guide in cluded This guide will help you get started right away and also includes some good recommendations We do recommend reading through this in struction sheet in it s entirety to familiarize yourself with the features and operation of your new engine We have also included a Troubleshooting Guide should you encounter any problems Please use the photos below to familiarize yourself with the components of your new XL 30RFS engine Pressure Nipple Muffler Rocker Cover Intake Pushrod Tubes Throttle Arm Low Speed Washer Needle Valve High Speed Needle Valve Crankcase Breath
19. ocedure in the previous section Open the throttle barrel to approximately 1 4 throttle Connect 3 the power to the glow plug Start the engine using an electric starter or by hand If starting by hand you will need to vigorously flip the propeller through the compression stroke several times before the engine will start Once the engine starts open the throttle barrel to about 1 2 throttle 4 You may need to lean the high speed needle valve in about 1 4 turn to keep the engine running at half throttle L 5 After the engine has been running about 1 minute remove the power from the glow plug Advance the throttle barrel to full throttle Adjust the high speed needle valve so that the engine is running very rich You should notice excessive white smoke coming from the exhaust and the engine should sound like it s running very rough Let the engine run for approximately 5 minutes then stop the engine L 6 Let the engine cool for approximately 10 minutes then restart it Set the high speed needle valve mixture to a slightly leaner setting about 1 4 turn more in Let the engine run for about 5 minutes at this setting then stop the engine and let it cool for approximately 10 minutes Repeat the procedure in step 6 while leaning the needle valve 7 slightly more each time In all you should run the engine about a total of minutes of actual running time After 30 minutes of run time the engine 3
20. of 6 50 to cover postage and handling charges for the return of your engine Do not send cash FF Send the engine to us by United Parcel Service Federal Express or by Insured Mail Postage is not refundable Send to Magnum Service Center 18480 Bandilier Circle Fountain Valley CA 92728 Phone 714 963 0329 Fax 714 964 6236 Email service globalhobby com FINE TUNING THE XL 30RFS Now that your engine has been broken in you can set the high and low speed needle valves for optimum engine performance Note Be careful to never lean the engine out too much Remember that the lubricants for your engine are suspended in the fuel If you lean out the fuel mixture too much you will also be lowering the amount of lubricant entering your engine Less lubricant means more chance of your engine overheating and possible engine failure LI Setting the High Speed Needle Valve L 1 Start the engine and remove the power from the glow plug Al low the engine to warm up for about minute After the engine has warmed up slowly lean the high speed mix 2 ture until the engine reaches peak R P M After reaching peak R P M richen the mixture slightly until an audible drop in R P M is heard If you are using a tachometer this should be between a 200 300 R P M drop O 3 With the engine running at full power carefully lift the nose of the airplane about 45 into the air The mixture should not become too lean but y
21. ou may hear a slight increase in R P M This is normal If the engine sags or loses R P M when you hold the nose up the mixture is too lean Note R P M will increase about 10 30 in the air This is due to the forward motion of the aircraft as it is flying Because of this more air is entering the carburetor at a higher force and causes the mixture to lean out Additionally as the fuel level in the fuel tank goes down fuel draw becomes more difficult for the engine especially during aerobatics thus causing the mixture to go lean It is imperative that you set the mixture rich while on the ground to compensate for the leaning tendencies that will happen in the air Always watch the exhaust during your flight The en gine should leave a noticeable white smoke trail at all times It there is no smoke trail the engine is running too lean You should land immediately and reset the mixture Setting the Low Speed Needle Valve Start the engine and lean out the high speed needle valve as per 1 the previous steps Close the throttle until the slowest reliable idle is reached Allow the engine to idle for about 30 seconds L 2 Quickly advance the throttle to full If the engine just stops run ning as soon as the throttle is advanced the idle mixture is too lean With the engine stopped richen the idle mixture about 1 8 of a turn L 3 Repeatsteps 1 and 2 until the engine will transition from idle to full thro
22. raws fuel on it s own Priming the engine prior to using an electric starter can cause the Therequired valve clearance is between 04mm and 10mm mea 3 sured between the valve stem and the rocker arm Use feeler gauges to check the clearance The 04mm gauge should pass through the gap with only slight friction The 10mm feeler gauge should be tight Adjustment Screw Locking Nut Washer Pushrod Working with one valve at a time loosen the locking nut using a 4 small wrench Use a screwdriver and turn the adjustment screw counter clockwise about 1 2 turn This will open the gap slightly Slide the 04mm feeler gauge between the rocker arm and the valve stem Carefully turn the adjustment screw clockwise until the rocker arm touches the feeler gauge Using a small wrench tighten the lock nut Remove the feeler gauge and double check the gap Repeat step 5 if necessary to achieve the correct setting Repeat for the second valve 4 MAINTENANCE L Avoid running the engine under dusty conditions If you are in a dusty environment we suggest using an air filter over the carburetor A small piece of women s nylon stocking placed over the carburetor opening and held in place with a small rubber band works well for small engines Atthe end of every flying day purge the engine of fuel by disconnect ing the fuel line and allowing the engine to
23. rburetor Assembly Complete Throttle Barrel Idle Mixture Screw Carburetor Body with Spray Bar Intake Pipe Gasket Needle Valve Set Complete Needle Valve with O Ring Head Bolt Set XL 30RES PARTS LIST QUANTITY PART 30 E 30 L 30 M 30 N o2 B 12114 12126 12518 12811 12812 12814 12819 12845 128393 28110 30101 30102 30108 30109 30210 30111 30112 30113 30204 30213 30219 30228 30231 30232 30236 30601 30709 30714 30732 30801 30813 30844 30863 92831 92860 52861 80122 D a a N ss ss ss Ss N es ss ss Ss Ss Ss Ss Ss Ss Ma l Sse Ss Ss Ss
24. to excessive leaning of the engine during flight and is not recommended Rotor Bolt The rotor bolt holds the throttle barrel into the carburetor body and does not need adjustment It also pre vents the throttle barrel from being over rotated in either direction To adjust the idle setting use the trim lever on your transmitter The trim lever should be set so that when the lever is fully forward the engine will ilde reliably When you pull back the trim lever all the way the throttle barrel should close completely to shut off the engine Q Needle Valve Extension If an extension is required to adjust the high speed needle valve use a engine to hydro lock or flood This is a result of too much fuel in the engine before it actually fires Turning the engine over with an electric starter while the engine is flooded can cause extreme damage to the engine and or cause your propeller assembly to come loose Turn the propeller through the compression stroke one time by hand to check for a hydro locked state before applying the starter Note If the engine becomes hydro locked do not force the propeller through the compression stroke Remove the glow plug and quickly flip the propeller or apply an electric starter to expell the fuel from the cylinder BREAK IN PROCEDURE Note The XL 30RFS engine is a ringed engine A ringed engine is designed differently than a typical ABC designed engine that you might be mor
25. ttle smoothly Minor hesitation in the transition will be normal If you quickly advance the throttle from idle to full and the en 4 gine seems to be very rich during transition i e lots of smoke coming from the exhaust and very rough sounding the mixture is too rich With the engine stopped lean the idle mixture about 1 8 of a turn Repeat steps 1 and 4 until the engine will transition from idle 5 to full throttle smoothly Minor hesitation in the transition will be normal VALVE ADJUSTMENTS Adjusting the Valves The Valve clearances are preset from the factory but do require periodic adjustment Reset the valves after the first 1 hour of engine running After that the valves can be checked and adjusted about every 8 hours of run ning The valves will need adjustment if you notice a servere loss of power or after you have repaired the engine or reassembled the engine With the engine cold remove the rocker cover on top of the 1 cylinder head by unscrewing the two socket cap screws L 2 Rotate the crankshaft until the piston is at top dead center Both valves will be closed at this point MAGNUM XL 3ORFS QUICK START and TROUBLESHOOTING GUIDE The following information is provided to get your new Magnum XL 30RFS running right away with minimal effort We have listed our recommendations for fuel propeller starting procedures and other recomm
26. ults in an engine that runs cooler and lasts longer One lean run using a fuel containing only syn thetic lubricants can cause engine failure Using fuels with a Castor Oil and synthetic blend of lubricants greatly reduces this chance HIGH amp LOW SPEED NEEDLE VALVES High Speed Needle Valve The high speed needle valve is used to meter the air fuel mixture at full throttle Turn the needle clockwise to lean the mixture or turn the needle counterclockwise to richen the mixture When you start the engine for the very first time the needle valve should be turned in completely then backed out 2 1 2 turns When you start the engine after that leave the needle valve in the same position it was in when you shut down the engine Low Speed Needle Valve The low speed needle valve meters the air fuel mixture at idle and during transition from idle to full throttle Turn the low speed needle clockwise to lean the mixture Turn it counterclockwise to richen the mixture The low speed needle valve is preset from the factory but minor adjustments may need to be made to suit your application i e fuel used glow plug and environment all contribute to the setting To reset the low speed needle valve to the factory setting open the carburetor barrel completely While holding the barrel open turn the needle in until it stops From this point turn the needle out 2 complete turns This is the factory setting STARTING PROCEDURE

OPERATING INSTRUCTIONS

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