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<strong>1980</strong> <strong>ET</strong><strong>340T</strong>CONTENTS1. MODIFiCATIONS 1A. . ENGINE 1B. DRiVE 2C. CHASSiS 3D. ELECTRICAL......................................................................................... 52. SERVICE 7A. MAINTENANCE INTERVALS 7B. SPECiFiCATIONS 9C. SPECIAL TOOLS 14D. WIRING DIAGRAM 15E. WIRE AND PIPE ROUTING DIAGRAM 161. MODIFICATIONS(Compared with 1979 model <strong>ET</strong>340)A. ENGINE1. Crankcase (Upper and lower halves)(8G8-1 51 00-00 ----> 8J4-1 5100-00)In order to mount the optional startermotor. mounting holes are provided.8G8-15100-00 can not be used on<strong>1980</strong> model.8J4-15iOU:UO can be used on both1979 and <strong>1980</strong> models.CrankcaseHole is drilled-1-
--- --~--~<strong>1980</strong> <strong>ET</strong><strong>340T</strong>2. Carburetor(8H5-14101-00 --t 8J6-14101-00)To achieve the precise fitting of themain nozzle, the main nozzle is pressfittedto the mixing chamber body, andaccordingly the main nozzle cannot beremoved.'80 model6To carburetor n-;_~o®Interchangeability:Yes3. Fuel pump_A small-type, lightweight fuel pump ISadopted and therefore, some of theparts are modified,1. Fuel pump ass'v(8J6-24410-00l2. Clip: 8.6 mr:n(90467-09026)3. Fuel pipe: 5 x 9 x 270 mm(90446-09062)4. Pipe protector: 9.5 mrn(8G5-24328-00)5, Joint pipe: 8-6 mm{BJ6-24376-00}6. Fuel,pipe: 240 mm(90445·09466)(Interchangeable as a set of theabove-listed parts)'79 model6To carburetor ~;:::::::w::c\To fuel tan,,::-==1o/11tOIl1lll\ll¥B, DRIVE1. Track(8~4711 0-00 --t 8L1-47110-00)To improve maneuverability on freshsnow, tractive performance andc1imbability, a longer track is employed.<strong>ET</strong>340 ('791<strong>ET</strong><strong>340T</strong> ('801Pitch 64mm 83:6 mmNumber oflinksLength onground44 41760 mm 1.110 mm1. Fuel pump ass'v(8G8-2441 0-0012. Clip: 11 mrn(90467-11.()2813. Fuel pipe: 7 x 11 x 230 mm(90446-11027)4. Pipe protector: 11.5 f!lm(8F3-24326-00J5. Joint pipe: 8-8 mm(878-24379-0016. Fuel pipe: 350 mm(90446-090581As a result of change of the track, thefollowing parts are modified.o Sprocket wheel8F3-47531-00 (7 teeth)--t 8H9-47531-00 (11 teeth)o Sliding frame 18G8-47411-00 --t 8L1-47411-00-2-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>o Sliding runner 1BE7'-47421-00 -> BL1-47421-00(Due to a larger contact area of trackwith ground)o Torsion spring 19050B-70375 (7.0 mm dia.. Red)-> 9050B-9041B (9.0 mm dia.. Blue)o Torsion spring 29050B-70376 (7.0 mm dia.. Red)-> 9050B-90419 (9.0 mm dia.. Blue)o Track tension wheel(BHB-47310-00) (Newly added dueto longer track)o Suspension wheel(B99-4731 0-01)2 pes. -> 4 pes.(Increased due to longer track)..~Sprocket wheelTorsion spring 1>~Sliding runner 1C. CHASSIS1. Frame(BGB-21910-00 -> BJ6-21 91 0-00)o As a result of modification of thetrack (refer to "B Track"). the chassisis lengthened 310 mm.o For better durability of the frame, theengine hood material is changed fromaluminium to steel plate (black coating).o The drive guard bracket is welded tothe hood for easy assembling.o The front part of the frame is painted.black as part of the new 19BO modeldesign.Welded drive guard bracket-3-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>2. Rear bumperTo increase the loading capacity, therear bumper is so designed that it canalso be used as a carrier.NOTE:-----------Due to modifications in 1. and 2. above, the1979 model's drive guard bracket 1 (8G577315-00) and bracket 2 (8F3-77316-01)are no longer used.4. Luggage boxFor better saleability, a spark plugholder is provided on the luggage boxcover.Interchangeability:No3. Steering gate(8G8-2371-01 --t 8J6-23871-00)For easy assembling and maintenance,stB6,ing gll'te.1. Spark plug holder{8H8-77356-00l5. ThrottleTo keep the throttle cable end" which isheld by the throttle lever, from contactingthe throttle grip, a collar is mountedand the lever is properly curved.Collar{90387-22726lLever.(8G8-42138-00__ 8J5-42138-00lInterchangeability:YesThe previous model's steering gate (8G8- ]23871-01) is interchangeable, as a setwith the drive guard bracket (8F3-7731601), with the new steering gate.Lever (8J5-42138-00) and collar(90387-22726) can be used on both1979 and <strong>1980</strong> models.Lever (8G8-42138-00) can not be usedon the <strong>1980</strong> model.-4-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>6. Tune-up label(8K5-77743-00)For easy service, the tune-up label isadhered to the intake silencer.<strong>ET</strong><strong>340T</strong> (8L1) SPECIFIKATIONER1. BENSIN2. MOTOROWA3 rANDSTIFT4. ELEKTRODEAVSTAND5 rANDINsrALlNING6. lAGFART (BRANSLEl JUSTERINGSSKRUV7. TOMGANGSVARVTAL8 BRANSLENIVAMIN 92 OKlo R.ONYAMALUBEBR·9ES (NGKl0.7", 0.8 mmt.e r o.t mm1.0 APEN1700 RPM25 + 1 mm9 KEDJEHUS DLJEVOLYM OCH VISKOSIT<strong>ET</strong>400 CG. GEAR OUA $AE #75 ~ 8010 VARITORAVSTAND266 ± 2 mm11. VARIATQR SIDOFORSKJUTNING11 + 1 mm12. MATTSP)i.NNING40'" 45 mm/l0 kg... FOR YTTERUGARE INFORMATION SE INSTRUKTIONSBOKEN FORGENNA MODELL... SPECIFIKATIONER KAN ANDRAS UlAN MEDDELANDE.D. ELECTRICAL1. C.D.1. magneto(8H5-85500-20 --; 8J9-85500-20)o For optional electric starter, the batteryeA8r@iA@ eeil is added.'79 model '80 modelWhiteBattery charging coilHeadlight.,-II I. .,.+.,.." ,o Rotor assembly(8H5-85550-20 --; 8J9-85550-20)For optional electric starter, the ringgear mounting holes (M8 P1.0 x 4)are provided.2. Spark plug(94701-00114--;94701-00186)The spark plug has been changed to atype because it is more easily availablein the market and does not affect engineperformance adversely.BR-9EV (N.G.K.) --; BR-9ES (N.G.K.)Interchangeability:Yes3. Main switch(8G8-82508-20 --; 8J5-82508-21)For additional safety, the headlight and--taillight-circuits are-changed so thatthese lights are kept turned on as longas the engine is in operation.-5-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>'79 model '80 modelGrayOrange Yellow BlueBlackBlack/WhiteOFFONOFFON/LIGHTLIGHTYellowOrangeBteck/wtuteBlue~--t:=----'=>---_ GrsvBlackInterchangeability:No4. Wire harness(8G8-82590-20 --.8J6-82590-20)For additional safety, the headlight andtaillight circuits are changed so thatthese lights are kept turned on as longas the engine is in operation. (Refer to"2-D Wiring Diagram.")Interchangeability:No5. Tether switch(8F3-82550 cOO--.8H8-82550-00)To prevent the switch from coming offeasily, the rubber cap thickness is increased,by which the durability andstrength of the cap is also increased.The ring is provided with a hook so itcan easily be hooked to the clothes.'79 model'80 modelIncreased thicknessHook is addedInterchangeability:Yes-6-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>2. SERVICEA. MAINTENANCE INTERVALS[PERIODIC MAINTENANCE]ENGINE:EveryCheck point 20 hrs. or 40 hrs. or 80 hrs or When400km 800 km 1600 km necessary(250 mil (500mi) (100Qmi)SeasonallyTightness of bolts and nuts a aBends. cracks and wear a aAbnormal noise a aLoose connection and breaks of fuel and pulse pipes a aLoose connection and breaks of oil pipes a aLoose connection and breaks of oil delivery pipe a aManual rope starter system a aCarburetor .Mixing•Operation of starter jet a aadjuster (pilot screw) a aIdling speed adjustment a aOperation and adjustment of oil pump a aIgnition timingaCylinder compressions a aCylinder head/exhaust pipe decarbonizeaSpark plug condition. gap and cleaning a aTiahtenina of the cvlinder head""DRIVE:.Tightness of bolts and nuts a· aWear on slide runners a a.a aV-belt a a.Secondary drive system . a aSheave distance a aSheave offset a aBrake pad wear a aBrake operation and adjustment a aGuide wheel rubber. .a aWear of drive track wheel sprocket a aDrive track adjustment a aBreaks in drive track a aBends in front and rear axles a aChecking of lock washers a aDrive chain adjustment a aDrive chain 011 level a . a- Primary drive systemBODY:Tightness of bolts and nuts a aBends and cracks a aWelded riveted, joints a aSki adjustment a aSki runner wear a aBreaks in fuel tank a aCleaning of fuel tank . aFuel filteraloose connection and breaks in fuel pipe a aBreaks in oil tank a aOil filtera.-7-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>EveryCheck point 20 hrs. or 40 hrs. or 80 hrs or When400 km BOOkm 1600 km necessary(250mi) (50Dmi) (1000 milELECTRICAl:Wear, breakage of wire covering 0 0Breaks in high-tension cord 0 0Voltage regulator working voltage 0Operation of engine stop switch 0 0Operation of tether switch 0 0Headlight.Seasonally0 0Taillight 0 0Brake light 0 0•• Retighten every 10 hours from the first use.[LUBRICATION INTERVALS]ENGINE:EveryLubrication point 20 hrs. or 40 hrs. or 80 hrs or WhenOil/GreaseSeasonally400km 800 km 1600 km necessary Brand name(250mi) (500mi) (1000 mi]Starter case 0Oil pump control box 0 0Pump drive cover 0 0Aeroshell grease #7 A orEsso Beacon 325 greaseOil in the oil tank 0 YAMALUBE 2-cycleoilis/';c.,iC'·Primarv sheave weiqhtI-ybEle-A-ld-FFl--'£liwl.f.ieand roller pins u usnowmobile greaseSecondary shaft andMolybdenum disulfide0 0slFdingsheavesnowmobile greaseFront axle housing 0 0Shaft 1 and shaft 2Light aU-purpose grease0 0(Slide rail).Drive chain oilGear oil API "GL-3"00replacementSAE #75 or #80BODY;Steering column lower0bearing .0 Light all-purpose greaseSteering column upperbearing0 0 Motor oilSteering links 0 0Ski column 0 0Ski wear plate 00Light all-purpose greaseSki retaining pin 0 0Brake wire end stopperand brake lever0 0 Esso Beacon 325 grease-8-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>B. SPECIFICATIONSGeneralNOTE: * .... New specification(Compared with ·1979 <strong>ET</strong>340)ModelModel:Model (1.8.M. No.) • <strong>ET</strong><strong>340T</strong> ('80) (8L 1)Frame I.D. & starting number 8Ll·051101Engine J.D. & starting number • E338·051101Dimension:Overall length • 2,895 mmOverall width (stdl • 990mmOverall heiqht (w/windshield)• 1,075 mm<strong>ET</strong><strong>340T</strong>('80)EngineDescription:Engine typeFan cooled two-stroke 5-port. twin cylindersEngine modelE338Displacement337 em'Bore X Stroke60 X 59.6 mmEffective compression ratio 6.1 : 1Starting systemRecoil hand starterIgnition systemC.O.1.," "=-Gy+iftcler-head.Combustion chamber volume (with spark plug)Compression chamber typeHead gasket thicknessCylinder:MaterialBore sizeTaper limitOut of round limitPiston:Piston skirt clearance (Measuring point)21.3 em!Dome + Squish1.0 mmCast iron sleeves aluminum60mm0.05 mm0.01 mm0.040 ~ 0.045 mm(10 mrn from piston skirt end)Piston oversize1st 60.25 mm2nd 60.50 mm3rd 60.75 mm4th 61.00 mmPiston pin outside diameter X length ¢16X47mmPiston ring;Piston ring design (Top)Piston ring design (Znd)Ring end gap !installed) (Top)Rin9 end qap (installed) [Znd]Small end bearing:TypeBig end bearlnq:TypeCrankshaft:Crankshaft assembly width (A)KeystoneKeystone0.35 ~ 0.55 mm0.35 ~ 0.55 mmNeedle bearingNeedle bearing160±0.1 mm-9-
<strong>1980</strong><strong>ET</strong>340rCrankshaft assembly width IF)52 ~g.05 mmCrankshaft deflection (0) 0.03 mm (0-1) 0.04 mm 10-2)0.04 mm (0-3) 0.03 mm 10-4)Connecting rod larqeend side clearance (C)0.25 ~ 0.75 mmConnecting rod small end deflection (P)2.0 mm (0.079 in)-,0-1Lo~O]~Crank pin outside diameter X length-PQ~"" ~,~A~0-41>22 X 51 mm 11>0.866 X 2.008 in)Crank pin type.Solid shaft assembly type with serrationCrank bearing type (Lett) X q'tv#6306 special X 1 pc.Crank bearing type (Center) X q'tv#6206 special X 2 pes.Crank bearing type IRight) X q'tv #6305 special X 1 pc.r. ," ,,., v ..... CD ,_~" 70 0 OTC V ,Crank oil seal tvpelCenter) X q'tvCrank oil seal type IRight) X q'tv.. Labvrinth seal X 1 ncoFPJ-25 48 8TS X 1 pc.Carburetor:Type & manufacturer/quantityB38-34 MIKUNI X 1 pc.1.0. Mark • 8J600Main jet (M.J.) #240Pilot jet (P.J.) #75Pilot screw (P.S.)1.0 turns outThrottle valve ITh.v.) #190Valve seat IV.S.)4>1.5 mm 10.059 in)Float heightIdling engine speed 1700 r/min .25 ± 1 mm (0.9B ± 0.04 in);Main jet setting chart :.~ . -30"e -20°C -10°C O"C to-e 20°C(-22°Fl (-4°Fl (14"FJ (32"Fl (50"FI (68 0 F)Altitude , I I I I ISea levelf------#250~#240(Std)#220~ 700m #240(Std)#220"#220~ 1400mf------#240--- #210•#210,..... 20GOm or more ..#220____#200-..•-10-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>Lubrication:Autolube pump ~ Color codeAutolube pump ~ Minimum strokeAutolube pump ~ Maximum stroke- Autolube pump ~ Reduction ratioAutolube pump -Autolube pump -Autolube pump wire free playOil tank capacityOil grade.Output Min./200 strokesOutput Max./200 strokesWhite0.20 ~ 0.25 mm1.55 ~ 1.87 mm1/320.50 ~ 0.63 em'4.15~ 4.70 em'25 ± 1 mm at idle2.4 literYAMALUBE 2-eyeleDrive and track suspensionTransmission:TypeV-belt automatic centrifugal engagementDrive ratio 3.5 : 1 ~ 1 : 1Engagement rpm3000 r/minPrimary spring:Part No. 90501-50500Color codeRedSecondary spring:Part No. 90508-40080Color codeNo paintedSecondary spring pre-load (twist) 160"eneavs cnsranceZ66 + 2 mmeave-#-set,-t-r1 ''''''V-belt width and outer line length31.6 X 1,099 mmV-belt wear limit26mmTrack suspension:TypeDamper typeSpring color code (Front)Spring color code (Rear)Slide runner wear limitTrack widthSlide rail suspensionOil and gas damperRedNo painted10mm380mmTrade deflection 40 ~ 50 mm/1 0 kgLength on ground1110 mmWheel sprocket material and number ofteethPolyethylene 11TStopper ba nd length• 102 mm (2nd hole from the bottom)Secondary drive:TypeChain (#40K-2)Reduction ratio 23/12 (1917)Chain pitch X Number of links 12.7 mm X 60LFree play10+5_ 2 mmChain housing oil quantity400 crrr'Chain housing oil grade Gear oil API "GL3" (SAE #75 or 85)Brake:TypeDisc brakeBrake pad thickness7.3mmBrake pad wear limit1.0 mmGap betweenpad and disc 0.2~ 1.0mm-11-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>Tightening torquePart to be tightenedThread sizeTightening torqueRemarks[Engine]Spark plugCylinderheadFlywheel magnetoCrankcase upper and lowerTightening sequenceM14P1.25M8 Pl.25M16 P1.0M8 P1.2528 Nm 12.8 m-kg. 20-lt-lbl25 Nm 12.5 m-kg. 18 It-Ibl73 Nm 17.3 m-kg. 53 ft-lb)First: 10 Nm 11.0 m-kg. 7.5 ft-lb)Final: 20 Nm (2.0 m-kg. 15 ft-lb)(/3_-1---___' : : :-}~Starter nutlev..0 0' 00 .0 .... "0 _" "n'"e'Gr.an~c.:.aSct:t,.af1qE!r1gjl'1~J)r.a
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>Steering column and gate MB P1.25 20 Nm 12.0 m-kg. 14.5 ft-Ibl Use lockwasherSteering relay rod adjusting nut M10P1.25 25 Nm 12.5 rn-kq. 18 ft-Ib)Out side arm and ski column M10P1.25 30 Nm 13.0 m-kg. 22 ft-Ib) Use lockwasher andwave washerSteering lower bracket MB P1.25 20 Nm 12.0 m-kg. 14.5 ft-Ib) Use lockwasherInstallation of steering column 1,2 MB P1.25 14.5 Nm (1.45 m-kg.10.5 ft-Ib) Use lockwasherSteering relay ass'v M10P1.25 30 Nm 13.0 m-kg. 22 ft-Ib) Use cotter pinUniversal joint M10P1.25 25 Nm (2.5 m-kg. 18 ft-Ib)Steering gate MB P1.25 14 Nm (1.4 m-kg. 10 tt-lb)C. SPECIAL TOOLSNo. Description Tool No.1 Dial gauge 90890~O30972 Dial gauge stand No.2 90890-011953 Dial gauge needle (56 mm) 90890-030984-, Flywheel puller bolt 90890-018034-b Flywheel puller attachment 90890-018044-, Flywheel puller screw 90890-018064-d Drive handle 90890-0181 74-, Flywheel puller body 90890-018485 Rotor holding tool 90890-012356 Primary fixed sheave puller 90890·018597 Sheave sub-assembly tool 90890-018588 Bushing tool 90890-018779 Sheave gauge 90890-0187510 Pocket tester 90890-0310411 Electro tester 90890-030.2112 AC. Regulator checker 90890-03090-14-
:0:Speedometer light(12V3.4W)IrB..L.L L~:=P~~ L --------6 1 L I>CJ_.L.-+===-CD~__Headlight(12V45W/ :: ho,.JG'---------l.Jl._ lynB~.----- 'b40W) , , I IBEI---~Main switchBrawLILs.wyLIIG~yB I IBG/yB'LBI!hiTail/brake light (12V BW/23WIc~:%l2G)CsG):%l:l>S1-enIBrake light switchTether switch~ 0GIyl"01 Lni--lJ,.tttn-~ r'"~ Go; 1-+--"--'-.Ch~G'Go ~EngIne stop swrt - ~. 0 I ,---LILI.,(0-e-w-~'N,f,~~-~.zi.,BI,-----~IB10BIB- L"'l't' 01w R01•C.O.I. unit I ! ...L..'1e
<strong>1980</strong> <strong>ET</strong>340E. WIRE AND PIPE ROUTING DIAGRAMUHQ.JI@@®CD®®8=9®® .@B160mmA@I~o::::::=::::::~-~~~~~f~~--16-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>®I---- ~32D1. To taillight2. Fuel pipe3. Fuel tank breahter pipe4. Through pipe inside the steering gate6. Voltage regulator6. Ground to body7. Clamp voltage regulator ground wire8. Fuel delivery pipe9. Pulse pipe10. Band11. Wire harness assembly12. Ground to body13. Clamp14. Fuel level pipe, 5. Clamp16. Pipe protector (Coil spring)17. Clip18. Band (Clamp the engine stop switch lead wire)19. Starter wire20. Oil pipe21. Oil triter22. Clamp23. Brake wire24. Throttle wire25. Band (Clamp the beam switch andbrake light switch lead wire) .26. Grommet27. To brake caliper28. When installing breather pipe, route it inside theinstrument panel.29. Oil tank breather pipe30. Through the breather pipe end into the fuel pumpbracket hole,31. Taillight lead wire32. Taillight-17-
<strong>1980</strong> <strong>ET</strong><strong>340T</strong>
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