Shindaiwa 757c Owner's Manual
Contents
1. Upon actuating chain brake you should release throttle lever 2 Maintenance of Chain Brake a Always keep chain brake clean free of sawdust and debris b Periodically check that brake band does not interfere with clutch drum when chain brake is not actuated CAUTION 1 Never start and operate engine with chain brake actuated chain stopped 2 Always carry chain saw by its front handle never carry by chain brake lever Be sure that brake lever is in vertical position set state during assembly and removal of chain brake The purpose of the chain brake is to minimize kickback danger not to protect from careless usage ANTIICING DEVICE When Icing starts to occur 1 Remove cleaner cover pre filter and filter 2 Remove two bolts on cleaner base 3 Remove four plugs on cleaner base and plug on cylin der cover NOTE Put all plugs during summer Fastening torque of two bolts should be 30 40 kg cm KICKBACK SAFETY FEATURES This chain saw is equipped with the following safety equipment e Chain brake e Low kick chain The chain brake activates causing a band to stop chain movement when sufficient kickback energy is pres ent for the operator s hand to contact the brake iever Proper adjustment is essential See page 15 for instructions Low Kick Chain Significantly reduces the rotational force of kickback if used conjunction with an approved bar chain and saw combin2. ate Nit a MN ak ne ee EIIE A T Hiie rane ed Good Sharpening Examples Wrong Filing Examples 1 Unegual cutter angles 3 Inconsistent contour caused by filing too low or too high OO OO 0 a Vadi Unequal cutter lengths e A ASS SS St AF Unequal depth gauges o SAW CHAIN SHARPENING 1 Designation Tie strap with rivets Cutter left hand 2 Sy with rivets 2 Function a The depth gauge controls depth or amount of cut for each tooth b Right and left cutters both should always be sharpened to uniform angle and depth c Drive links and saw chain together function to discharge sawdust 3 Points of Sharpening a Sharpen all cutters and align right and left cutter angles to meet these specifications 4 How to Sharpen a Sharpen right and left cutter angles uniformly to 30 with the round file Unequal fing can cause irratic saw ing and vibration File in the direction as indicated with arrow 5 After Sharpening a When sharpening is completed place the depth gauge joiner on all cutters as shown in the figure File out portion if it is higher than the joiner Round the filed depth gauge as shown in the illustration Depth gauge joiner A Recommended depth Oh 0 64 mm 19 SAFETY PRECAUTIONS IMPORTANT Read all instructions carefully before operating your new Shindaiwa chain saw The following safety precautions should be observd by all use
3. considering size shape and lean of tree b Clean around area for safe operation c Cut a notch about 1 3 of the diameter of the tree d The felling cut is horizontally made on the side opposite the notch and at a ievel about 5 cm 2 above the bottom notch Te remaining wood between notch cut and felling cut about 3 to 5 cm or 1 to 2 wil act as a hinge and tree will fall in the direction of the notch if pinching of the bar should occur during cutting remove chain saw with engine stopped by the use of a wedge e When tree begins to fall stop engine and give a sig nai to others in the area Remember Falling direction is not always the one desired 4 Bucking and Limbing a For wood lying on the ground use caution as to its stability On a slope always stand and work uphill to the log Start cutting from the top of the log Cut with repeating level action using saw spike as a fulcrum Do not cut into dirt CHAIN BRAKE Model 7571757W is equipped with inertial chain brake if kickback should occur chain brake will stop saw chain rotation when brake lever hits operator s hand 1 Chain Brake Operation a Chain brake will release saw chain when in vertical position Position 1 b Chain brake will actuate and lock saw chain when brake lever is in forward titted position Position 2 c When you want to release brake pull brake lever back to vertical position Position 1 Brake lever NOTE
4. 500 to 2 800 rpm NOTE Turning adjusting screw clockwise increases rpm Saw chain will not run at above rpm 2 Low Speed L and High Speed H Adjustment Standard opening Lo cccccccestessecersesececrssssssersvsssessecsseeree 1 0 E 1 4 turns 1 ccccoccececsrecssccecesrerssrsescesssecseeseree 1 0 amp 1 4 turns Standard opening means number of turns from the fully closed position by turning needie gently counter clockwise 3 Adjustments for Low Speed L Adjusting Screw After adjusting according to number 2 continue to turn gently either to right or to left so that engine rota tion may be speeded up Continuing to turn will result in engine rom decrease Return to the position just before this slow down and set at this point Next as idle speed is considerably higher than in the case of number 1 setting reset idle adjusting screw so that engine idies at 2 500 to 2 800 rpm By repeating this procedure two to three times optimum low speed idle adjustment can be obtained 4 High Speed H Adjustment Not adjustment is necessary when the saw is new After approximately 10 hours running time readjust the H needie to 1 0 turns 1 4 turns CAUTION 1 Do not run saw at full throttle with no load If run in this condition seizure can occur 2 Do not adjust H needle to less than 3 4 turn If run at less than 3 4 turn seizure can occur 14 4 When engine fires or coughs p
5. operation 1 Proper Chain Tension To property adjust tension first lift bar nose to remove slack between bar mounting slot and bar studs For hard nose bars adjust until a slight pulling pressure on chain at mid bar will leave 3 3 5 mm gap between bar rail and chain side plats See illustration For sprocket nose bars adjust slightly tighter still allow ing chain to pull around bar freely CAUTION Loosely tensioned chain can cause unexpected accidents and lead to excessive bar and chain wear Alway check before use 2 To Adjust a Loosen clutch cover nuts 2 pieces about one turn b Turn side screw with screw driver Turn to right clock wise to tighten and left counter clockwise to loosen NOTE n Slide screw 10 FILLING FUEL AND CHAIN OIL STARTING AND STOPPING 1 Fuel Mixture Always use a gas oil ratio of 25 1 40 1 with premium Shindaiwa brand oll CAUTION Before starting Clear a safe work area When the engine starts the chain will rotate so be prepared 2 Chain Oli This oil performs an essential role to reduce guide bar and chain wear and to faciitate smooth cutting i Always use clean oil and refill when refueling a ner wie 1 Turn switch ON 2 Puli choke lever all the way out NOTE 3 Depress lock lever C ENGE erdee It may be necessary to thin chain oil by mixing one part oll to one part kerosene lock into throttie
6. NACE 1 Saw Chain Saw chain sharpness is essential in determining its performance When cutter is in worn state sharpen t at once Cutting with a dull chain increases fatigue and greatly lowers cutting performance When dirty 13 WARNING KICKBACK May Occur When The Nose Or Tip Of The Guide Bar Touches An Object or When The Wood Closes In And Pinches The Saw Chain In The Cut Tip Contact In some Cases May Cause A Lightning Fast Reverse REACTION Kick ing The Guide Bar Up And Back Towards The Operator Pinching The Saw Chain Along The Top of The Guide Bar May Push The Guide Bar Rapidly Back Towards The Operator Either Of These Reactions May Cause You To Lose Control of The Saw Which Could Result In Serious Personal Injury Do not rely exclusively upon the safety devices built into your saw As a chain saw user you should take several steps to keep your cutting jobs free from accident or injury Guard against kickback Kickback is the upward motion of the guide bar that occurs when the saw chain at the nose of the guide bar contacts an object Kickback can lead to dangerous loss of control of the chain saw To reduce kickback a With a basic understanding of Kickback you can reduce or eliminate the element of surprise Sudden surprise contributes to accidents b Keep a good firm grip on the saw with both hands the right hand on the rear handle and the left hand on the front han dle when the engine is running Use a firm
7. Suin Daiwa KOGYO C0 LTD Head Office 35 Shin Ujigami Chiyoda cho Yamagata Gun Hiroshima 731 15 Japan Phone 082672 6011 Fax No 082672 6001 Shindaiwa Inc 11975 S W Herman Road Tualatin Oregon 97062 U S A Phone 503 692 3070 TLX 910 466 8550 SDK USA WLSV FAX 503 692 6696 Printed in Japan 72338 93110 1 9303 shindaiwa 757 757C 757W W C H AI N SAW This symbol on the nameplate means the product is Listed by Underwriters Laboratories Inc OWNER S MANUAL FOR YOUR OWN SAFETY CAREFULLY READ THIS OWNER S MANUAL BEFORE USE CAUTION Always wear eye protection when operating this machine Do not run machine without spark arrestor screen In place The manufacturer takes no responsibility for fire if machine is operated without this spark arrestor screen in place Your Shindaiwa 757 757C 757W is equipped with spark arrestor mufflers TABLE OF CONTENTS Nomenclature HOORR EE OOEEERAEESF EF ESE FESH HORSES HEH OOOOH SORT ET HGH EAH EES ifi i pec ications MEE EROS HEE EHEDEFTEREFFE EP EF EOOS HH OER SEE HEFEDHESEEESE HOSE OES Safety Precautions eer Kickback Safety Features Mounting Guide Bar and Saw Chain Saw Chain Adjustment eeen Filling Fuel and Chain Oil Mounting Full Wrap Handle Starting and Stopping Carburetor Adjustment Chain Brake l
8. ation 00220 222 NOTE The reduce the risk of kickback all of the above must be in good repair Use of other than ANSI B175 1 combinations may produce much greater kickback energy Warning This chain saw is capable of severe kickback that could result in serious injury to the user Do not operate this chain saw unless you have extraordinary cutting needs and experience and specialized training for deal ing with kickback Chain saws with significantly reduced kickback potential are available CAUTION Do not use a replacement saw chain unless it is designated or labeled as meeting ANS B175 1 Kickback performance requirements for this model or has been designated as low kickback chain in accordance with the ANSI B175 1 standard Eee eee een 1 Remove two nuts clutch cover and spacer 2 Install guide bar To install guide bar insert the plate A and guide bar slot over bar studs 3 Fitsaw chain first from sprocket rim side then into guide bar groove toward bar tip Check if saw chain is property fitted into rim 4 Install clutch cover and secure it temporarily with 2 nuts Now saw chain adjustment operation begins After adjustment fasten nuts property MOUNTING GUIDE BAR AND SAW CHAIN mmm CARBURETOR ADJUSTMENT With engine running adjust carburetor using the following procedures 1 idie Screw Adjustment Turn idle adjusting screw so that stable operation can be obtained at 2
9. cing Device Routine Maintenance eene Saw Chain Sharpening FPSEHEH EHH CORR HEHEHE ES See OORE ree Herat EOP PERREHEHOR HOO HHORT ETE HERE DS EH THOS aeenreeetend seert re Nt eest enseetsketders CERERE EE EEEE E redvervenester aar KAA KAKSIK EKA EEE BOC ORDO H HD eet tee ese eeeres Cover overttt tes ARKKAAAKAAA AAA ORR ee er eres ered St herrea teeas REE HEO HE OR EES EKKAKA KESKTEE eposovante aaottaarweer KIEKEKAKKKAEKKKAEEE A OKKAS KKKTEI CTT KKKELKLAEKKKA AE KA KEELEKE KKAAE KEAK IKEEES ALLE AEK peeti eesnerre ee veanneentenndevadeene es erestaceren tes OORT EHH HELE REDS EEE es eenstoertethouteeseee wees aes t need 10 sie 44 11 12 14 19 s 15 16 18 19 Dn Aan j j Bispoung pau e Se N puri 1015 in DCA OWIW SPECIFICATIONS aire Cee SPE SPN TEE ARS PE yD a VT ke A MT Neigh Sls 0 attr eh MA cet DT tty lures en A LA ee 7 AA Md Es TA AIA ava ad Tel t 5 FS set 1E 2 eis PR a 1 HAS T E rr nt KE N 4 lb A TRE Ri Pr ly sk a AT AREND ae Chol t ra A 4 73 5 cc 51 x 36 4 49 in FaN Gasoline 25 1 2 cycle oll AERE 40 1 with premium Shindaiwa brand oll i Champion CJ6Y Recoil starter 4 Recommended Bar and Chain
10. e work area Hold the chain saw firmly with both hands the right hand on the rear handle and the left hand on the front handle when the engine is running Use afirm grip with thumbs and fingers encircling the chain saw handles Keep all parts of your body away from the saw chain when the engine is running Do not operate a chain saw that is damaged is improperly ad justed or is not completely and securely assembled Do not run without clutch cover installed Be sure that the saw chain stops moving when the throttle control trigger is released Shut off the engine before setting it down Use extreme caution when cutting small size brush and saplings because slender material may catch the saw chain and be whipped toward you or pull off balance When cutting a limb that is under tension be alert for spring back so that you will not be struck when the tension in the wood fibers is released 22 23 24 25 27 Operate the chain saw only in well ventilated areas Do not operate a chain saw in a tree unless you have been spe cifically trained to do so Open fuel cap slowly to release anly possible build up of pres sure Do not refuel a hot saw Allow to cool if possible Operation of a chainsaw with faulty or damaged antivibration mounts isolators can lead to higher vibration Long term vibration can cause damage to the operator s hands For lowest vibration replace damaged mounts immediately Mounts hard
11. ened due to age or weathering should also be replaced Prolonged exposure to excessive noise is fatiguing and could lead to impaired hearing The use of proper protection can reduce this potential hazard DO NOT OPERATE A CHAIN SAW WITH ONE HAND Serious injury to the operator helpers and or bystanders may result from one handed operation A chain saw is intended for two handed use Note These safety precautions are intended primarily for the con sumer or occasional user When using a chain saw for logging purposes refer to the Code of Federal Regulations Section 1910 266 5 2 5 1 of American National Standard Safety Reguirements for Pulpwood Logging ANSI 03 1 1 978 and relevant state safety codes 1 Before Starting a Understand safety procedures b Clear a safe work area C pale should wear safety helmet protective wear for hands and feet and close fitting but comfortable othes d When moving from place to place stop engine for safety 6 Always keep saw chain tensioned property and inspect often f Check for loose bolts and nuts before use 2 Efficient Operation Wood can be cut most efficiently by light pressure and with saw rpm in the 8 500 9 500 rpm range at full throttle NOTE High pressure against wood lowers engine rpm increases fatigue and lowers cutting performance result ing in considerable efficiency loss 3 Felling a Tree a Determine the direction of fall
12. grip with thumbs and fingers encircling the chain saw handles A firm grip will help you reduce kickback and maintain con trol of the saw Don t let go c Only use replacement bars and chains specified by the manufacturer or the equivalent d Hold the chain saw firmly with both hands e Do not overreach f Do not let the nose of the guide bar contact a log branch ground or any other obstruction Ra Air Cleaner Periodical inspection and Maintenance Fuel Filter Take off fitter by use of a wire hook through from grease or pitch wash with gasoline and immerse in ol to prevent rust Guide Bar Always clean the saw bar groove and oil hole When they are clogged with chips remove them For distribution of wear and increased life occasionally turn bar cover a Remove the air cleaner being careful not to drop dust in the carburetor Make sure the choke lever is pulled when removing the air cleaner b Dust tends to accumulate on the bottom surface c Rinse the air cleaner with gasoline or solvent When blowing with air blow from the upper side Cylinder Fin Cleaning Dirt or dust clogged fins can cause engine overheating Clean between cytinder fins When heavily clogged cleaning should be made after removing recoil case tank opening Remove both filter elements and rinse them wall with gasoline 16 b When cutting a log supported on both ends begin from the top side by cu
13. lever to improve lubrication 3 Automatic Oiter The automatic oiler is designed to operate only when the chain is operating To adjust the automatic oiler which leaves the factory at a half open setting turn to the left counter clockwise to increase flow and to the right clockwiee to decrease flow A temporary increase in fow may be necessary in cut ting hardwood or large diameter softwood When work is finished adjust olier to half open satting again b When engine is warm a ae 1 Set switch ON Ne Throttle lock 1 NOTE Throttle lever cannot be pulled without depressing lock lever 1 in upper handle When throttle is released idle speed is resumed and chain rotation stops 3 Pull recoil starter rope while holding the chain saw firmly and placing your right foot into rear handle as shown in the photo Pull cord siowdy until en gaged then rapidly after you can feel the increased resistance MOUNTING FULL WRAP HANDLE for model 757W only The full wrap handle is packaged disassembled Take following steps for the mounting 1 Put tull wrap handle over power unit as right straight bar Cover side i Turn 4 bolts by hand for positioning of ful wrap handle Tighten 4 bolis by hex wrench Fastening torgue 30 50 kof cm CAUTION aa N NOTE Spacer amp 4 bolts are packaged into a vinyl bag en 12
14. ress choke in to the original off position and pull recoil starter again Use caution as chain will rotate during engine starting After brief removing of engine to clear carbu retor saw will idie with throttle lock off If saw fails to start after a few pulls follow above procedures from the beginning ff saw still wil not start flooding may have occurred 90 check as follows a Check spark by removing spark plug and short ing against nae while pulling recoil starter rope Make sure switch is ON b inspect to see if spark plug is fouled when removing plug f fuled 1 Expel fuel by hand cranking several times without spark 2 Wipe off excess fuel from plug and replace before starting engine ee NOTE 1 Make sure switch is ON before starting 2 Return choke to the original position when saw first fires after starting with full choke Otherwise flood ing wil result and engine won t start 3 Upon starting allow to idle for 1 to 2 minutes for warm up 2 Stopping Turn switch OFF after idling at low speed for 1 to 2 minutes 13 After the adjustment tighten two nuts properly SAW CHAIN ADJUSTMENT Correct saw chain tension is essential to achieve maximum performance for chain like cutting ability and safe ty Whenever using a new chain i is advisable to soak it in oll overnight before use and to check the chain tension from time to time because it can stretch after initial
15. rs of chain saws 1 Do not operate a chain saw when you are fatigued 2 Use safety footwear snug fitting clothing protective gloves and eye hearing and head protection devices 3 Use caution when handling fuel Move the chain saw at least 10 feet 3m from the fueling point before starting the engine 4 Do not start cutting until you have a clear work area secure foot ing and a planned retreat path from the falling tree 5 Before you start the engine make sure that the saw chain is not contacting anything 6 Carry the chain saw with the engine stopped the guide bar and saw chain to the rear and the muffler away from body 7 Keep chain properly adjusted and sharpened 8 Itis unsafe for young children and persons unfamiliar with its usage to operate any chain saw 9 When repairing or servicing use only recommended Shindai wa replacement parts 10 Do not operate this or any chain saw without a muffler 11 Keep the handles dry clean and free of oil or fuel mixture 12 All chain saw service other than the items listed in the owner s manual maintenance instructions should be performed by trained Shindaiwa chain saw service personnel For example 4 if improper tools are used to remove the flywheel or if an im proper tools is used to hold the flywheel in order to remove the clutch structural damage to the flywheel could occur and could subsequently cause the flywheel to burst ROUTINE MAINTE
16. tting down 1 3 of the way through the log and finish by coming up from the bot tom This prevents pitching of the guide bar K Y a c Limbing of standing tree Cut 1 3 from the underside first then cut through from the top Thus easy imb ing can be attained by cutting the remaining part fush with the trunk of the tree 6 Carbon Removal from Muffler Disassemble muffler guard and cover muffler by releasing two nuts and a bolt Remove carbon buildup Use caution to replace parts in proper order 7 Spark Plug Inspection Remove spark plug and clean it then adjust the gap Optimum clearance 0 6 mm 0 024 Always use Champion CJ6Y Sprocket Inspection Check rim which drives chain behind clutch drum after removing clutch cover If there is any wear on sprocket replace with a new one Do not run saw without clutch cover property installed iT 16 17 18 19 20 21 g Cut at high engine speeds h Do not cut above shoulder height i Follow manufacturer s sharpening and maintenance instruc tions for the saw chain j Use devices such a low kickback chain chain brakes and special guide bars that reduce the hazards associated with kickback When transporting your chain saw use the appropriate guide bar scabbard Do not allow other persons to be near the chain saw when start ing or cutting with the chain saw Keep bystanders and animals out of th
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