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techtalk:ih:engctl01 [2020/05/03 14:17] ixl2relax [Timing Advance] |
techtalk:ih:engctl01 [2020/08/25 05:20] ixl2relax [Setting Ignition Timing] |
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| |**80-82**|8° (BTDC)|26° BTDC - (600-1600 RPM)|40° BTDC) - (above 1600 RPM)| | |**80-82**|8° (BTDC)|26° BTDC - (600-1600 RPM)|40° BTDC) - (above 1600 RPM)| | ||
| ^ ^Startup Advance^Fast Idle Advance^1800-2800 RPM ((79-85 Sportster FSM pg 3-3))^ | ^ ^Startup Advance^Fast Idle Advance^1800-2800 RPM ((79-85 Sportster FSM pg 3-3))^ | ||
| - | |**83-85**|10° (before TDC)|40° (before TDC)|55° (before TDC| | + | |**83-85**|10° (before TDC)|40° (before TDC)|55° (before TDC)| |
| ==== Points Gap and Trigger Sensor Gap ==== | ==== Points Gap and Trigger Sensor Gap ==== | ||
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| ===== Setting Ignition Timing ===== | ===== Setting Ignition Timing ===== | ||
| - | * During the 1969 model year, the MoCo began a new practice of setting ignition timing on Electra Glide, Servicar and Sportster models with the circuit breaker cam fully advanced instead of in the retarded position done in the past. Correct timing position was changed to 45° BTDC on Sportsters. Good engine performance requires correct advanced timing and this procedure eliminates any variations which may happen , in degrees of timing, due to a tolerance buildup in the parts. Retarded cam timing is not as critical since it is effective only at low speeds. ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261)) | + | * During the 1969 model year, the MoCo began a new practice of setting ignition timing on Electra Glide, Servicar and Sportster models with the circuit breaker cam plate fully advanced instead of in the retarded position done in the past. Correct timing position was changed to 45° BTDC on Sportsters. Good engine performance requires correct advanced timing and this procedure eliminates any variations which may happen , in degrees of timing, due to a tolerance buildup in the timing weight parts. Retarded cam timing is not as critical since it is effective only at low speeds. ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261)) |
| * When checking / setting timing with a circuit tester or timing light (according to the FSM), ignition should occur when the single mark on the flywheel is in the center of the timing inspection hole in the crankcase. ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261)) | * When checking / setting timing with a circuit tester or timing light (according to the FSM), ignition should occur when the single mark on the flywheel is in the center of the timing inspection hole in the crankcase. ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261)) | ||
| - | * Timing with a circuit tester: The cam must be turned clockwise with the flywheels locked down or held in position. ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261)) | + | * Timing with a circuit tester: The cam plate must be turned clockwise with the flywheels locked down or held in position. ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261)) |
| - | * Timing with a timing light: The engine must be run at 2,000 RPMs to be sure the cam is fully advanced. ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261)) \\ | + | * Timing with a timing light: The engine must be run at 2,000 RPMs to be sure the timing weights are fully advanced. ((HD Service Bulletin #562A dated May 1, 1969 pg OC-261)) \\ |
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| Paint the timing mark with bright pink fingernail polish (or something florescent). \\ | Paint the timing mark with bright pink fingernail polish (or something florescent). \\ | ||
| Install the clear plug into the timing hole. \\ | Install the clear plug into the timing hole. \\ | ||
| - | It should be very near but not touching the flywheel. (go in till you touch the wheel and back off a 1/8-1/4 turn). | + | It should be very near but not touching the flywheel. (go in until you touch the wheel and back off a 1/8-1/4 turn). |
