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  #76 (permalink)  
Old 11-05-2017, 09:42 AM
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Bike Year, Make, Engine: 88" ACM Rigid Bobber
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Originally Posted by CIC2016 View Post

I know this is an old thread, but most of them are now that CC is a ghost town!

I placed an Ultima ignition module on my sons 2001 1200 Sportster. I need to know if the red timing light is supposed to be on or off when front cylinder is TDC. I can see the mark in the timing window that it's TDC, but perhaps it is on the exhaust stroke? Will the ignition module react differently to the exhaust stroke? I thought that with a dual fire ignition, it fired on both compression and exhaust stroke. Is there a sure way to determine which stroke it's on?

The instructions say to move flywheel until light turns on and off. On mine, the light is off on TDC. I'm probably missing something simple, so please enlighten me!
Rotate the ignition module back and forth until the red light is on, then very slowly rotate the unit clockwise until the light goes out, lock down the unit exactly at the spot the light goes out. TDC on the front cylinder can be found by removing both plugs, put the bike in gear, rotate the rear wheel with a finger in the front spark plug hole, when you feel the compression pushing out the next timing mark is your front cylinder TDC.
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