85 engine electrical.pdf - Vintage Snow

More documents

Recommendations

Info

ENGINE ELECTRICALIgnition System TroubleshootingCondition: No SparkDisconnect the single black (black/white) wire from the COl Module tothe ignition kill circuit. Does it have a spark?Yes-+NotCheck the ignition switch, wire harness, throttle safety switchesand kill switch for proper adjustment or short to ground. Repairor replace as necessary.Disconnect the stator to COl module wires. Test the resistance valuesof the flywheel coils as per the charts on page 4.21 . Are the resistancevalues within specs?Yes-+NotIsolate which component's resistance is not within specs. Removethe flywheel and stator. Recheck the resistances; look for pinched orbare harness wires; or replace the coil. Refer to page 4.28 for coilreplacement procedures.All except 3 cylinders: If the parts of the ignition system underthe flywheel check OK, the only remaining component is thecoiVCDI module assembly. Replace the module with anotherwith the same CU number. (See ignition data)All 3 cylinders: Disconnect and check the secondary ignition coilresistances. Refer to the resistance values listed on IVa-1 O. Ifthe coil resistance values are within specs, replace the COlmodule.Condition: Incorrect Advance/RetardFollow the engine timing procedure for checking running timing at Adjust the ignition timing by rotating the stator plate to correct the3000 RPM. Is the timing within limits? timing. After adjusting the 3000 RPM timing, continue withNo-+operating RPM timing if poor performance exists. (Continue onYes t with left column.) See ignition timing page 4.20.Follow the engine timing procedure for checking operating RPM timingfrom page 4.20. Is the timing within limits?Yes-+NotIf the 3000 and operating RPM timing are within limits, no othertesting is necessary.Remove the ignition kill circuit by disconnecting the single black wirebetween the COl module and the machine harness. Is the timing nowcorrect?Yes-+NotVerify the correct COl module by comparing the CU code on the boxto the information listed in the ignition data charts at the beginning ofthis section. Is it the right module?No-+VestCheck the resistance of the coils under the flywheel. Compare thesevalues to the charts on page 4.21. Are they within limits?Check the ignition switch, throttle safety switches, kill switch andharness for damage which can cause intermittent shortingproblems. Correct the problem.Replace the module with the correct part and readjust the ignitiontiming.Check the wiring connecting the coils and/or replace the coils asnecessary.No-+VestIf the 3000 RPM timing is within limits but the operating RPM timing isnot acceptable, replace the COl module.NOTE: 3 cylinder engines fire three times per revolution. At 7500 RPM the ignition is firing 21,500 times perminute. Use of a timing light not capable of handling these RPMs may provide an incorrect operating RPM timingreading. Use timing light PN 2870630 or equivalent.8/94 4.26
ENGINE ELECTRICALAlternator Output Test - Open CircuitCAUTION: Perform this test with a digital volt/ohmmeter such as the Fluke 73 (PN 2870659), orequivalent. Set meter to AC volts (V..-v) whenperforming the test.1 . Disconnect alternator connector from engine.2. Insert red test lead into yellow wire coming fromengine alternator.3. Black tester lead must be grounded to either theengine, a brown wire at the connector, or theyellow/red wire at the plug. See plug wireidentification for proper hook-up.4. Start engine and observe AC voltage reading on multitester. Slowly increase RPM to 3000 and note voltage.The reading should be approximately 20 volts. Readings of 15 to 45 VAC are considered normal. If readingsare low, remove flywheel and look for damaged magnets, shorted or damaged lead wires or damaged lightingcoils. Repair or replace problem component and recheck.5. On EFI models AC amps can be checked between Gray and GrayIWhite. At 5,000 RPM reading should be 7amps.Lighting System Identification - Test between labeled wires.Used On:100 Watt Singles120 Watt Twins150 Watt Singles and Twins200 Watt Twins120 Watt 3 Cylinder180 Watt 3 Cyl. (Carb.)170 Watt 3 Cyl. (Carb.)1990, 1991 RXL1992, 1993 500 EFI180 Watt1992 to Current 650 EFI250 Watt Twin - 500 EFIGrayIWhiteCheck Lighting Coil BetweenYellow and Brown.Check Battery ChargingBetween Gray and GrayIWhite.Gray/WhiteGrayBrownlWhiteCheck Lighting Coil BetweenYellow and Brown.Check Battery ChargingBetween Gray and BrownlWhiteand GrayIWhite and BrownlWhite.BrownYellowNOTE: Gray, GrayIWhite, BrownIWhite are Bullet Type Connectors4.27 8/94
Page 1 and 2: CHAPTER 4ENGINE ELECTRICAL "Ignitio
Page 3 and 4: Electronic Control SystemSystem III
Page 5 and 6: 1985 ModelsENGINE ELECTRICALIgnitio
Page 8 and 9: ENGINE ELECTRICALIgnition Data1988
Page 16 and 17: ENGINE ELECTRICALTypical 1985 - Cur
Page 18 and 19: ENGINE ELECTRICALSingle Cylinder CO
Page 20 and 21: ENGINE ELECTRICALTwin Cylinder Fan
Page 22 and 23: ENGINE ELECTRICALThree Cylinder COl
Page 24 and 25: ENGINE ELECTRICALOperating RPM Timi
Page 26 and 27: ENGINE ELECTRICALIgnition I Chargin
Page 28 and 29: ENGINE ELECTRICALIgnition I Chargin
Page 32 and 33: ENGINE ELECTRICALTypical Exciter, P
Page 34 and 35: ENGINE ELECTRICALBattery ServiceLoa
Page 36 and 37: ENGINE ELECTRICALElectric Starter S
Page 39: Electrical Fuel InjectionSection 44
Page 42 and 43: ENGINE ELECTRICALElectronic Fuel In
Page 44 and 45: ENGINE ELECTRICALPower Up Testing -
Page 46 and 47: ENGINE ELECTRICALPower Up Testing -
Page 48 and 49: ENGINE ELECTRICALAlternator Control
Page 50 and 51: ENGINE ELECTRICALEFI Fuel System Ma
Page 52 and 53: ENGINE ELECTRICALEFI Fuel System Ma
Page 54 and 55: ENGINE ELECTRICALEFI Fuel System Te
Page 56 and 57: ENGINE ELECTRICALSystem III - Elect
Page 62 and 63: ENGINE ELECTRICALSystem 111- Electr
Page 64 and 65: ENGINE ELECTRICALSystem 111- Electr
Page 66 and 67: ENGINE ELECTRICALEFI ElectronicsFue
Page 68 and 69: ENGINE ELECTRICALEFI ElectronicsThe
Page 70 and 71: ~(J)~OR/6lKSTATOR RESISTANCES 1'10%

85 engine electrical.pdf - Vintage Snow

Create successful ePaper yourself

Delete template?

Save as template?