1970 CCW 340 Service Manual - Vintage Snow

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TABLE 1-1 TECHNICAL DATA -1970 MODELS SECTION ISPECIFICATION ccw 340 ccw 400Cycle: Two stroke Two strokeNumber of cylinders: Two TwoCapacity: 339 cc (20.9 cu .in.) 398 cc (24.3 cu. in.)Stroke: 60 mm (2.36 in.) 60 mm (2.36 in.)Bore: 60 mm (2.36 in.) 65 mm (2.56 in.)Compression ratio : 8.5 8.5Rating: 25 BHP at 5800 rpm 30 BHP 5800 rpmMaximum torque :(23 lbs. ft.) at 5250 rpm (27.31bs. ft.) at 5500 rpmSpecific fuel consumptionunder full load: 400 gr/ps.h (0.881b/ps.h) 400 gr/ps.h (0.881b/ps.h)Ignition system: Auto-advanced flywheel ignition Auto-adva nced flywheel ignitionwith lighting coii12V- 75Wwith lighting coii12V- 75WContact breaker gap: 0.3 to 0.4 mm (.012 to .016 in.) 0.3 to 0.4 mm (.012 to .016 in.)Ignition timing settingwhen fully advanced : 230 BTDC 230 BTDC(Static timing setting): BTDC go (.015" BTDC on Piston) so (.015" BTDC on Piston)Spark Plug: NGK B 8H or equivalent NGK B SH or equivalentSpark plug gap: 0.5 to 0.6 mm (0.020 to 0.024 in.) 0.5 to 0.6 M.M. (0.020 to 0.024 in.)Starter system : Rewind starter with emergency Rewind starter with emergencystarting pulley or electric starter starting pulley or electric starter(output 0.5 kw)(output 0.5 kw)Carburetor: Tillotson HR or equivalent Tillotson HR or equivalentFuel: Mixture, gasoline of known brand Mixture, gasoline of known brandand special air cooled two strokeand special air coo led two strokeengine oil. (See Table 2-2) engine oil. (See Table 2-2)Mixture ratio : 20:1 (at normal operating conditions) 20:1 (at normal operat ing cond itions)Rotation direction of engine: Left hand (standard configuration) Left hand (standard configuration)see toward the power take off endsee toward the power take off endof the engine.of the engine.Weight: 60 lbs. 60 lbs.Inlet port, timing 1380 1380height 23mm 23mmwidth 42mm 46mmExhaust port, timing 1680 1680height 23mm 23mmwidth 28mm 38 mmPiston height: 67mm 67mmPiston ring, chromium plate, top 1 1Piston ring, gray cast-iron, bottom 1 1Cylinder head, volume 16.35 cc 17 ccCooling fan, blades 8 8ratio 1.81 :1 t81 :1Magneto, make 340S only Sawafuji Kokusan340 GE Kokusan KokusanIGNITION COILS (340S) Sawafuji KokusanResistance, primary .4 ohms 1.4 ohmsResistance, secondary 8,500 ohms 5,500 ohmsCurrent rating 1.75/2.25 amps 1.5/1.75 ampsSpark in free air 8 mm @500 RPM 9 mm @500 RPM(three need le gap) 15 mm@ 5,500 RPM 16 mm @5,500 RPM0.1-4
TABLE OF CONTENTSSECTIONPAGEINTRODUCTION AND T ECHNICAL DATA .. .. . . 1-11.1 Introduction ............ ... ..... .... . 1-11.6 Model Designation .. .... . .......... .. . 1-11.8 Technical Data ... ....... . ......... .. 1-11.9 Tools, Special & Standard Requirement .. . 1-1ILLUSTRATION OF SPECIAL TOOLS . . .. ... . . . 1-1SECTION3.3 .93.3.103.3. 113.3. f23.3.133.3.14PAGEF ly wheel Assembly .... .. . . . . . . ... . .. . 3-9Cylinder Heads and Cylinders . ..... .. ... 3-9Pistons, Pins and Rings .. . . . . . . .. . .. . :. 3-9Crankshaft and Connecting Rods ...... . . 3-9Crankcase . ... . ........... .. . . . .. ... 3-9F its and T olerances . .. . . . . . . .. . .. .... . 3-9IIIllOPERATION AND SERVICE INSTRUCTIO NS .. . . 2-12.1 Principles of Operation .. . : • ..... . .. . .. 2-12.2 Sequence of Operation ... . . . ......... . 2-12.3 Ignition Systems . . . .. .. .. . ... . . . ... . . 2-22.3.1 General .... ... . . . . .. .. . ...... . .... . 2-22.3.2 Description . ... .. . .. .... .. ... . ..... . 2-22.3.2.1 Sawafuji lgnitfon (Magneto) .. . ... . . . . . . 2-22.3.2.2 Kokusan Ignition (Magneto) . . ... . . . . .. . 2-22.3.3 Operation .. . . . . ........ . . . . . . .. .. .. 2-22.4 Detonation and Pre-Ignition . . . .. . ... ... 2-22.4.4 Pre-Ignition . . . ..... . ...... . .... . ... . 2-42.5 LIGHTING SYSTEMS .. . .. . ... . . .... . 2-42.5.2 Operation of lighting Systems . . .. . . . ... 2-42.5.2.1 Engines previous to Serial Numbers Model340-2903614 and Model 400-2809570 . ...... 2-42.5.2.2 Engines Serial Numbers Model 340-G-E 2903614 and Model 400-S-G-E 2809570and subsequent . . . .. . ... . .. . . .. .. . . . . 2-42.5.2.3 Model 340S only. Engines with serial numbers2903614 & subsequent. See fig. 2-12 . .... 2-7·2.6 PERIODIC SERVICING ... . ..... . . ... . 2-72.6.12.6.22.6.32.7Spark Plugs . . ... . .. · . . ..... .. . .. . .... 2-7Fan Belt . .. ... .... .. ........ . . . . .. . 2-7Trouble Shooting ....... . . . . . . . .. .... 2-7OPERATING INSTRUCTIONS ....... . 2-1 92.7.2 Starting the Engine .. . .. ... ... . . . ... . 2-192.7.2.1 Starting with recoil starter . . ... . . . .. . .. 2-192.7.2.2 Starting with electric starter .. . . .. . .... 2-192.7.3 Stopping the Engine ............. .. .. 2-192.8 lubrication .. . ... .. .. . . .. . .. .. ..... 2-1 9DISASSEMBLY, CLEANING AND INSPECTIO N . .. 3-13.1 PREPARATION FOR DISASSEMBLY .. . . 3-13.2 DISASSEMBLY ...... .. ...... .. ... .. 3-13.3 CLEANING AND INSPECTION .. ... ... . 3-73.3.1 Cleaning .. . ... . . . . ...... ... . . ..... . 3-73.3.2 I nspectio"n ... . . . . ... . .. . . ... .. .. . . . . 3-73.3.3 General ................ . .. .. .... . . . 3-73.3.4 Spark Plugs .......... .. . . . . .. . . . .... 3-73.3.5 Fan Cover ........ .. . .. . . . . . ... . . . .. 3-73.3.6 Recoil Starter . . . . . ... . ... .. . . .. . . . .. 3-73.3.73.3.8Electric Starter . . . .... . . .. ..... . .. .. . 3-7M agneto Assembly . . .... . ... .. ....... 3-7IVvREPA I R AND REPLACEM EN T ... _. ... .. . ... . . 4-14.1 GENERAL . . ... . .. . ... ............. 4-14.2 FAN COVER ... . ............ _. .".... 4-14.3 RECOIL STARTER •.. .. . . ..... ... .. . 4-14.4 FlYWHEEL ASSEM BLY (340S) ... _... . 4-54.5 FlYWH EEL A SSEM BL Y (340E, 340G,4.64.6.14.6.24.74.7.14.7.24.84.8.1400) . .. · ... . . . ...... . . . . . .... . ... . . 4-5STATOR ASSEM BLY (340S) . .. .. .. . . _. 4-5Contact Breaker Point Set .. . . . . ... . ... . 4-5Condenser and Oil Felt Pad . .... .. ... .. 4-10STATO R ASSEMBL Y (340E, 340G, 400) . 1-10Contact B rea~er Point Set . . . . .. .. . ... . 4-10Condenser and Oil Felt Pad . .. .. .. .. . . . 4-10CRANKSHA FT .. . . .... . ." . ... . ...... . 4 -10Oil Seal and Outer Bearing ... . .. . .... . 4-10REA SSEMBLY, T ESTING AND ADJUSTMENTS .. 5-1!,).1 GENERAL . ... ... . ... .............. 5-15.2 REASSEMBLY .·.. .... .... .... . ... ... 5-15.2.1 Crankcase and Crankshaft . . ..... . ... . .. 5-15.2.25.2.35.2.45.2.55.2.65.2.75.2.85.2.95.2.105.2.115.2.125.2.135.35.45.4.15.4.25.4.35.4.45.4.4.15.4.4.25.4.4.3Pistons, Pins and 13 ings ... . . .. .. . .. . . . . 5-1Cylinders .. .. . . ... . ... .... .. : ." . . . . .. 5-2Cylinder Heads . ... .. . . . . ..... . ..... . 5-4Stator Assembly . .... . .. . . . . . . .. . . . .. 5-5Fan Cover Case and Flywheel ... . . .. . ... 5-5Fan Cover, Starter Cup andFan Belt Pulley . . . . .... . ..... . . . . . . . . 5-6Electric Starter ........ . .. . .. .. , . . .. . 5-7High Tension Ign it ion .. . . ... ... ... . • .. 5-7Recoil Starter .. . .. . . . ... .. . .. .. .. .... 5-7Intake and Exhaust Man.ifolds .... . . .... . 5-7Covers . ... .......... .. . . ... .... . .. . 3-7Engine Installation . . ... .. .... . . . . . . . . 5-7TESTING AND OVERHAUL .. ......... 5-7ADJUSTMENTS ....... .. .... . ..... .. 5-7Carburetor . .. . . . ...... . ... . .... . . : .. 5-7Spark Plugs .. . . .... . . .. . . ... . . . . ... . 5-7Contact Breaker Point ... . . .. ......... . 5-7Engine Ignition Timing . . . .. .. .... . .. .. 5-7Preferred Method .. . . ..... . . . . ... . ... 5-7Alternate Method .. . ... . . . .. . ... . . .. . 5-8Crankshaft Angle Versus Piston Travel . .. . . 5-8
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: CCWTOOLLIST43-0797-60REWIND SPRING
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 and 34: TABLE 2.1TROUBLE SHOOTING CHART3. F
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' ~
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1970 CCW 340 Service Manual - Vintage Snow

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