1970 CCW 340 Service Manual - Vintage Snow

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TABLE 2-2LUBRICATION CHA·RTComponentPeriodicityType/MethodAccessRecoil StarterCenter hub.Main spring.Pawls.0 nee yearly orduring overhaulGrease, low temper·ature, Lubriplate orequivalent (by hand)Remove recoilstarter cover.Remove frictionplate. (See·Section Ill,Para. 3.2.1 d andSection IV, para.4-3).ElectricStarter driveshaft andspring (ifinstalled).Once yearly orduring overhaulGrease, low temperature,Lubriplate orequivalent (by hand)Remove starter(See Section Ill,Para. 3.2.1g).Contact BreakerPoints (oilfeltpads)Once yearly orduring overhaul1 or 2 drops goodquality lightmachine oil (oilcan).Remove recoilstarter and starterpulley. (SeeSection Ill, Para.3.2.1 d and 3.2.1 h).Lubricate throughbreakerpoint accesshole.Contact BreakerPoint CamOnce yearly orduring overhaulGrease, low temperture,Lubriplate orequivalent. Lightlycoat governorassembly and flywheelcollar (by hand)Remove flywheel(See Para. 3.2.1 j)Remove snap-ring.Lift out cam.Replace cam andsnap ring. (SeeSection IV, Para.4.4).The following is a list of recommended brands of two strokeengine oil: ·Esso SnowtracVeedol SnowmobileShell Two Cycle SnowmobileMercury 50 New Formula "Quicksilver""Bardahl" Snowmobile VBA2-20
SECTION mccDISASSEMBLY, CLEANING AND INSPECTION3.1 PREPARATION FOR DISASSEMBLYa. Remove muffler and exhaust pipe as applicable. Disconnectelectrical wiring and controls. Remove enginemounting bolts; place engine on a suitable workbench.b. Thoroughly clean exterior surfaces of engine, usingsuitable cleaning solvent.3.2 DISASSEMBLYNOTE: To prevent loss and expedite reassembly procedures,keep attaching hardware with each part as it isremoved.3.2.1 Disassemble the engine as follows:a. Disconnect spark plug wires at spark plugs. Remove plugs.b. Remove the ten bolts securing cylinder cover to engtnebody. Remove cover. See Figure 3-1c. Remove the four hold-down nuts, washers and lockwasherssecuring intake and exhaust manifolds to cylinders.Remove manifolds. Remove intake manifold with carburetorattached. Remove carburetor if it requires servicing.Refer to applicable carburetor manufacturer'sspecifications. Remove insulators from intake side.Discard gaskets.Figure 3-2.d. Remove the four bolts securing recoil starter to fan cover.Remove starter to expose starter cup and fan belt pulley.Figure 3-3.e. Disconnect coupler attached to fan cover. Remove twobolts secu ring coil cover to fan cover. Remove cover toexpose high tension coils.Figure 3-3.f. Remove the two bolts and spacers securing high tensioncoils to fan cover. Remove coils with spark plug wiresattached.g. Remove the two hold-down nuts, two attaching boltsand lockwashers securing electric starter to engine body (ifso equipped) . Remove starter.Remove starter.h. Remove the three bolts securing starter cup, fan beltpulley and window plate (if installed) to flywheel. Pulloutward and up on pulley to remove from flywhee l.Remove fan belt.1. Remove the two Phillips screws securing ignition terminalcoupler and bracket to fan cover, and four bolts securingfan cover to fan cover case. Remove fan cover to exposeflywheel.3-1J. Lock the flywheel using CCW Tool Part #43-0798-40remove the nut, lockwasher and flat washer securingflywheel to crankshaft. Remove the flywheel as follows:1. Install flywheel puller to the three tapped holes inflywheel.2. Tighten the center bolt of puller to 40 pounds-feetmaximum.3. Using a wooden mallet or block and hammer, tap eachside of the flywheel alternately while maintaining thetorque setting on center bolt until the flywheel isremoved.CAUTION: 1. Do not over torque center bolt on flywheelpuller. Excessive torque may result in breakingthe puller attachment bolts.2. Do not hammer on end of crankshaft toremove flywheel. Damage to the shaft orbearings may result.Figure 3-6.k. Remove the four bolts seCL'ring fan covercase to crankcase.Remove covercase.Figure 3-7.I. Remove the two screws secunng stator assembly tocrankcase. Remove stator assembly.Figure 3-8.NOTE: Unless being serviced, stator assembly should bestored inside flywheel to ensure retention of magneticproperties.m. Remove the five hold-down nuts securing each cylinderhead to cyl inder. Remove cylinder heads.Discard cylinder head gaskets.Tool: 13 mm box spanner.NOTE: Before proceeding any further check crankshaft forbend and twist as follows :1. Check for twist:(a) Rotate eng ine to T.D.C . on No. 1 cylinder using a dialindicator mounted on the cylinder.(b) Install and zero a degree wheel on the crankshaft.(c) Rotate crankshaft 1800. The piston on No. 2 cylindershould be at T.D.C. Permissable tolerance is 20.2. Check for bend on either end :(a) Mount a dial indicator at the junction of the paralleland tapered sections of the shaft.(b) Zero the indicator. Rotate the crankshaft one fullturn. Permissable run out is 0.003 inch on one rotation.n. Remove the four hold-down nuts securing each cylinderto crankcase. Remove cylinders to expose piston andconnect ing rod assemblies. Discard cylinder base gaskets.Figure 3-10.CAUTION: If disassembly is discontinued after cylinder orpiston removal , ensure that crankcase is keptcovered to prevent ingress of dirt or foreignobjects to crankcase.
Page 1 and 2: TECHNICALSERVICE MANUALOPERATION, S
Page 3 and 4: •• • 5-10LIST OF ILLUSTRATION
Page 5 and 6: cSECTION 1INTRODUCTION AND TECHNICA
Page 7 and 8: CCWTOOLLIST43-0797-60REWIND SPRING
Page 9 and 10: TABLE OF CONTENTSSECTIONPAGEINTRODU
Page 11 and 12: -SECTION 1INTRODUCTION AND TECHNICA
Page 13 and 14: CCWTOOL LISTc43-0797-60REWIND SPRIN
Page 15 and 16: SECTION ncOPERATION AND SERVICE INS
Page 17 and 18: -IcPOINTSErL.T.COILTO1-IGNITION1 -S
Page 19 and 20: II~I I~I .I~I IFig. 2-4340 S-G400 S
Page 21 and 22: 2. Two Headlamps 12V35W - Two Tail
Page 23 and 24: • Ic--p·- -~ ~~, · .: :' . ...i
Page 25 and 26: ( } ( ' rTO PO INTS-,IIITOICrN ITIO
Page 27 and 28: l-ITo I GN Iii ON COILS~--------r--
Page 29 and 30: )----,---------l;;-----------------
Page 31 and 32: corTABLE 2.1TROUBLE SHOOTING CHARTM
Page 33: TABLE 2.1TROUBLE SHOOTING CHART3. F
Page 37 and 38: Fig. 3-4 Starter cup and fan belt p
Page 39 and 40: ccStator a·ssemblyi ------Fig. 3-8
Page 41 and 42: cco. Refer to Section IV, Figure 4-
Page 43 and 44: cserviceable condition, the condens
Page 45 and 46: SECTION 1VQREPAIR AND REPLACEMENTcc
Page 47 and 48: 61. Starter pulley 12. Case2. Retai
Page 49 and 50: c--·-reel in an anti-clockwise dir
Page 51 and 52: 22526 27-~~ ,~--! 1424 ~ ~~12fill @
Page 53 and 54: c1. Crankshaft ass'y 8. Piston ring
Page 55 and 56: SECTION VREASSEMBLY, TESTING AND AD
Page 57 and 58: ccrankcase to steady the piston. Us
Page 59 and 60: c5.2.5 Stator Assembly (See Figure
Page 61 and 62: cb. If a window plate was removed d
Page 63 and 64: cFig. 5·14Setting Engine Ign ition
Page 65 and 66: c' ~

1970 CCW 340 Service Manual - Vintage Snow

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