1970 CCW 340 Service Manual - Vintage Snow

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TABLE 2.1· ,, " . ; TROUBLE SHOOTING CHARTJ Inlet control lever too high(carburetor floods) .4. ldle~irbleed plugged.5. Welc'h plug loose.6. Muffler obstructed7. Engine not secured tightly toengine support.8. Water in gas.9. Water in the ignition switch.6. Check and clea r muffler.7. Tighten engine mounting bolts.B. Add carburetor de-icer fluidas required.9. Dry out switch, using suitablede-icer spray or heat.). ·Won't start, kicks back.. ,,.:~~ nd backfires.· • .1. Spark plug wires reversed2. Flywheel key. missing or-sheared3. Faulty condenser4. lmpropertiming5. Faulty breaker points6. Unhooked spark retardingmechanism-or spring broken1. Install wire correctly .2.:- Replace key.3. Replace condenser4. Re-time engine5. Adjust or replace points.6. Reconnect mechanism or replacespr1ng .No acceleration, low topR.P.M., hard to startGood spark but engineruns on one cylinder.1. Spark plugs improperly gappedor dirty.2. Magneto breaker points improperlygapped or dirty.3. Faulty coi I or condenser.4. Loose or broken magneto wires.5. Blown head gasket.6. Inlet lever adjustment too low7. Crankcase leaking1. Leaking cylinder head2. Magneto wires broken inside(coil ground broken).3. Cracked cylinder wall4. Defective spark plug.5. Breaker points improperly gapped6. Crankcase seal leaking.1. Clean, adjust or install newplugs.2. Clean, ad just or install newpoints.3. Replace coli or condenser.4. Repair or replace magneto wires.5. Replace head gasket.6. Refer to carburetor manufacturerSpecifications.7. Instal l new seal .1. Check head for warps, cracks.Install new gasket and cylinder head2 Repair or replace wires.3. Replace fau lty cylinder.4. Clean. adjust or instal lnew plug5. Re-adjust po ints.6. 1nstallnewsealJNo acceleration . Idleswell but dies down whenput to full throttle.1. High speed needle settoo lean.2. Dirt behind needle and seat.3. High speed jet obstructed.· 4. Inlet lever set too low.5. Choke partly closed .6. Silencer obstructed.7. Fuel pump not supply ing enoughfuel due to:( 1) Punctured diaphragm(2) Flapper valves distorted.8. Fuel line obstructed.9. Not enough oil in gas.10. Breaker points improperly. gapped or dirty.11. Engine improperly timed.1. to 7.Adjust carburetor. Refer toManufacturer's Specifications8. Remove fuel line. Clearobstruction. Replace line.9. Refuel. using specified" fuel/oil mixture.10. Adjust, clean or install newpoints.11. Re-time engine to specificationsEngine run~ b~~us ingchoke at high speed1. High speed needle set too lean.2. Dirt behind needle and seat.2-181. & 2. Adjust carburetor.Refer to Manufacturer'sSpecifications.
TABLE 2.1TROUBLE SHOOTING CHART3. Fuel line obstructed4. Inoperat ive fuel pump3. Remove line, clear obstruction,replace line.4. Refer to Manufacturer's SpecificationsNo power under heavyloadCranks over extremelyeasy on one or bothcylinders. Loss ofcompression.f:ng1ne won't crankover. Unable to rotateflywheel.1. Magneto breaker points improperly 1. Clean, adjust or install newgapped or dirty.points.2. Ignition timing too far advanced 2. Adjust timing3. Magneto co il plate loose3. Check magneto and secure coilplate.4. Fau lty carburetion4. Refer to Manufacturer'sSpecifications.1. Scored piston due to:( 1) Not enough oil in gas.(2) Lack of cooling2. Blown head gasket.3. Loose spark plug1. Replace faulty piston.2. Replace head gasket.3. Check plug for security.4. Head bo lts not tight enough 4. Torque head bolts to properspecifications.1. Piston rusted to cylinder wall 1. Remove piston and cylinder.Replace defective parts.2. Crankshaft seized to bearing2&3. Disassemble engine.(main or ro d).Replace defective parts.3. Broken connecting rod.4. Flywheel seized to coil plate. 4. Remove flywheel.Replace defective parts.5. Engine improperly assembled after5. Recheck re-assembly procedure.repa 1r.2.7 OPERATING INSTRU CTIONS2.7.1 Preparation For Operation:Ensure that the fuel tank is filled with the co rr ect mixture ofrecommended gasoline and special air-cooled two strokeengine oil . See Table 1-1.CAUTION: When fil ling or ~opping up the fuel tank, use afuel strainer to prevent po ssible contam inationof engine and fuel system components.2. 7.2 Starting2.7.2.1 Sta rting the engine using recoil sta rter.a. Adjust throttle lever to approx imately one-half fu ll openposition.b. Close carburetor choke lever. When starting a warm engineit may not be necessary to close the choke.c. Switch the ign ition to the RUN position .d. Pul l lightly on the handle of the rope unt il a click is heardwhen the pu lley engaged with the flywheel and then pullstrong ly on the rope. Let the handle return quickly to theoriginal posit ion. Do not let go of the handle until the ropehas fully retracted.e. If engine does not start, repeat step (d) and adjust throttlelever as required until the engine starts.f. After the engine has started, gradual ly open the chokelever and close throttle lever until the engine runssmoothly at idling speed (1000-1200 rpm). When theengine is running at normal operating temperatu re thechoke shou ld remain in the fully open position.2-19NOTE : If the engine fails to start after repeated attempts,refer to Trouble Shooting Chart, Tabl e 2-1.2.7.2.2 Starting the engine using electric starter.a. Adjust throttle lever to approximately one-h alf full openposition.b. Cl ose. carburetor choke lever. When starting a warm engineit may not be necessary to close the choke.c. Engage the applicable ignition switch. If engine does notstart within 5 seconds, disengage the ignition switch.Adjust throttle lever as required; wait approximately 30seconds and repeat the starting procedure.d. After the engine has started, gradually open the chokelever and close t he throttle lever until the engine runssmoothly at idling speed (1000-1200 rpm). When theengine is running at normal operating temperature thechoke should remain in the fully open position.NOTE : If the engine fails to start after repeated attempts,refer toT rouble Shoot ing Chart, Table 2-1 .2.7.3 Stopping the EngineTo stop the engine, close throttle; switch off the ignition. Donot stop engine by grounding the spark plugs or disconnectingspark plug wires.2.8 LUBRICATIONLubricati on chart, Table 2-2, detai ls periodic lubricationrequirements. Further periodic lubrication of these engines isnot required.
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: corTABLE 2.1TROUBLE SHOOTING CHARTM
Page 35 and 36: SECTION mccDISASSEMBLY, CLEANING AN
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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