Sachs SA 340, Repair Instructions

Page 1: ...c SJ SACHS Repair Instructions No 4075 8 E ACHS Snowmobile Engine Type SA340 340 SS super sport 370 Edition December 1969 FICHTEL SACHS AG 8720 SCHWEINFURT...

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Page 3: ...h BOSCH solenoid controlled starter Type DD Engine with BOSCH inertia pinion type starter Type DG Operation maintenance and lubrication of electric starters Starter faults o o o o o o o Instructions a...

Page 4: ...ir construction will also be found helpful when used in conjunction with this booklet Of course good maintenance and repair work and efficient service to customers call for good equipment a well fitte...

Page 5: ...9 0 0157 in l before TDC 0 1968 0 2283 in Contact breaker gap 0 4 0 05 mm 0 016 0 002 in 12 V 40 W equipment stopped engine 32 36 mm 1 2598 1 4173 in l Pole shoe gap running engine 14 18 mm 0 5511 0 7...

Page 6: ...REPAIR TOOLS AND ASSEMBLY JIG J 14 6 Cj 2 3 4 J 21 1 _ fJ21 9 9 6 12 13 14 17 11 15 16 F SI 071 22 2 4...

Page 7: ...for spark advance X X X 9 1376 020 000 8 Revolution counter X X X 10 0276 170 000 To rque key X X X 11 1476 013 000 8 Extractor sleeve assy consisting of X X X 1476 011 000 8 extra ctor sleeve 1440 02...

Page 8: ...rettor and electric starter Fig 1 Screw down eng ine on the as sembly jig w ith 3_hexagon hecid bolts M l 0 x 40 as shown in the adjoining illustration Pull off impulse pipe 4 Remove intake silencer 3...

Page 9: ...lead f rom in_ sulator Remount parts in reverse order Magneto flywheel Fig 4 Fit protective cap repair tool no 4 to threaded end of crankshaft Fit retaining lever l repair tool no 5 to magneto f lyw...

Page 10: ...ractor 3 repair tool no 1 and insert 2 repair tool no 2 When fitting the steel band care should be taken to ensure that the piston rings are in their groo ves Danger of breaking piston rings Remove sl...

Page 11: ...time When replacing oil seals the following points should be borne in mind Extracting oil seals Fig 8 Before extracting the oil sea l be sure to record installation dimen sion x o or y in order that...

Page 12: ...l in inclined position Remount leg and extract oil seal as described under Fig l 0 Note If the oil sea l has got stuck oxi dation the sheet steel rim may break Therefore it is advisable to knock the...

Page 13: ...rooved ball bearings into the warm crankcase halves on the magneto side until they strike a stop Press in crankshaft oil seals until flush on ly after the crank case halves have been screwed together...

Page 14: ...90 mm is take n up by inserting shims 2 Fig 13 between the space r 3 Fig 13 and the inne r race of the cylindrical ro lle r bearing 1 Fig 13 on the crank pin power takeoff side Fitting the inner race...

Page 15: ...ows the two sta rting directions Fig 15 Recoi l starter for engine running in clockwise direction Recoil starter for engine running in anti clockwise direction as seen on the power take off side of th...

Page 16: ...ig 18 Rai se spring end to take out coil spn ng Hold coil spring firmly with both thumbs see illustration and by raising each thumb let out spring on alternate sides Note Replace bush 2 Fig 20 only if...

Page 17: ...osition cord guide 2 also Fit starter handle with stop and clamping ring on to cord Lay starter cord around clamp ing taper and pull it into clamp ing ring Pull clamping ring into starter handle and l...

Page 18: ...ith heat resisting grease Fit thrust washer 0 3 mm thick o n bearing pin hang spring 6 into place in flyweight Fit flyweight on bearing pin must e ngage with cam and se cure with retaining ring 5 Cam...

Page 19: ...00 metres 3280 ft adjustments of the carburettor setting will be required As the air density is reduced at high altitudes the supply of gasoline to the carburettor should be restricted by changing the...

Page 20: ...e lOB By pass passage ll Butte rfly va lve 12 Main jet orifice 13 Carburettor ho using 14 Throat of corburettor ve nturi 15 Main fuel outlet 16 Choke 17 Fuel passage from pump to control chambe r 18 I...

Page 21: ...king order Checking and cleaning the fuel fi lter in good time helps to achieve satisfactory functioning of the carburettor and longer eng ine service life Special maintenance instructions 1 If pump f...

Page 22: ...from dynamo magneto to terminal 3 With the 12 V 75 W equipment connect primary lead blue from dynamo magneto and short circuiting lead from short circuiting button to terminal 3 Connect earth wire br...

Page 23: ...ulse pipe 4 Fig 1 to connection on crankcase Place on both insulating bushes insulating flange carburettor and both fibre washers hard cloth side towards carburettor and screw carburettor firmly into...

Page 24: ...ng stops and engine runs satisfactorily If the idling speed fluctuates too much or is too high turn the idling jet adjusting screw anti clockwise to open the jet until the engine runs smoothly at lowe...

Page 25: ...f tooth on tooth engagement occurs the switch w ill close as the spring is spring connected to the guide ring and the lever is therefore not hindered in its movement w hen starting the armature turns...

Page 26: ...inertia of the pinion result in a force which causes the pinion to run a long the shaft and engage with the gear rim When the pinion has reached the stop on the armature shaft the drive becomes positi...

Page 27: ...dically After removing the retaining strap 2 Fig 35 of the solenoid control led starter or screwing off the cap 3 Fig 36 and ta king out the fuse the compensating washers and the cap 2 Fig 36 of the i...

Page 28: ...led commutators should be cleaned with a clean gasoline damped rag not with waste wool and well dried Commutators which have become scored and eccentric must be re turned in a suitably equipped worksh...

Page 29: ...a maged parts loose so that switch is not on burnt out 7 Magnetic switch of starter damaged only with solenoid controlled star ter 8 Loss of current in leads too great leads damaged lead connections l...

Page 30: ...cting up a rectifier to charge a battery The bulbs should be so selected that the tota l load of the dynamo magneto is 40 Watt as otherwise the bulbs may fuse Care should be taken to ensure a good ear...

Page 31: ...o magneto is 50 Watt For reaching the 75 Watt a resista nce of 25 Watt must be added Care should be taken to ensure a good earth connection from the engine via the chassis to the lamps 1 Xltl Cla I IU...

Page 32: ...elected that they give a total load of 40 Watt Care should be taken to ensure proper wire cross sections for starter operation and a good earth connection between battery chassis and lamps Fig 39 Aa L...

Page 33: ...are connected up The bulbs should be so selected that they give a total load of 50 Watt Care should be taken to ensure proper wire cross sections for starter operation and a good earth connection betw...

Page 34: ...ted up The bulbs should be so selected that they give a total load of 50 Watt Care should be taken to ensure proper wire cross sections for starter operation and a good earth connection between batter...

Page 35: ...the crankshaft connecting rod and main bearings ago inst corrosion 2 To protect the cylinder and the piston place the piston at top dead center unscrew the sparking plug and pour 3 5 cc 0 106 0 176 fl...

Page 36: ...perate starter II the spark plug is in good order a strong spark must flash across the electrodes Gap between electrodes 0 5 mm 0 020 in see arrow 0 0 0 2 0 Q 0 w e 0 0 0 CJ E 0 e c 0 Q r c 3 0 w X X...

Page 37: ...er 0316 057100 4 Fan 1442 005 001 Crankshaft magneto side SW 14 14 mm 0 551 in across flats SW 17 17 mm 0 669 in across flats I Dimension I Tightening Torque M6x10 0 9 1 1 kpm 6 5 8 0 ft lb M8x80 2 4...

Page 38: ...78 0 001 18 0 050 ream to 22 mm 0 030 0 86614 in 0 00196 0 00118 SACHS SA 340 SS cylinder with Ni Resist liner Cylinder assy No Cylinder dia Standard 1487 025 015 1sf rebore 1487 025 016 2nd rebare 14...

Page 39: ...s 0 00193 0 030 0 00118 0 030 3 1299 0 00118 0 030 3 1496 0 00118 Piston assy No I 1486 032 005 I 1486 032 006 1486 032 007 I I I Punched in 79 mm 79 5 mm 80mm dimension Piston ring No I 141 5 003 100...

Page 40: ...ock in carburettor interrupts fuel supply 3 Contact breaker points oiled up or fused 44 4 Locating pin for contact breaker arm worn 5 Spark plug or spark plug terminal or ignition armature not in orde...

Page 41: ...INSTALLATION DIMENSIONS FOR SACHS 340 and 340 SS with solenoid controlled starter 0 U t In the interest of technical progress we reserve the right to introduce modifications without notice...

Page 42: ...INSTALLATION DIMENSIONS FOR SACHS 340 and 340 SS with inertia pinion type starter 0 6 1 I i In the interest of technical progress we reserve the light to introduce modifications w ithout notice...

Page 43: ...0 INSTALLATION DIMENSIONS FOR SACHS SA 370 110 4 2 1 _ 129 S 079 b I o I In the interest of technical progress we reserve the right to introduce modifications without notice...

Page 44: ...ntroduce modifications without notice I p 5000 6000 _ U m in RPM ft lb 26 M 25 21 23 t 22 21 20 1 19 18 17 16 15 5000 6000 U min RPM lb HPh 1 4 1 3 1 2 1 1 be 1 0 0 9 0 8 0 7 0 6 5000 6000 U min RPM p...