2.15. Ignition Timing

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Some later models of XS650 does not have the full advance position marked in the stator. Here is how to get that marking done:

First, get yourself a degree wheel. Preferably transparent. Or do like I did: download for example http://www.ducatimeccanica.com/Timing_Degree_Wheel.jpg and print it on the plastic foil and cut it out.

Second find out where exactly is your alternator pointer when the pistons are at top dead center (TDC). It is the point that before that point the piston is going upwards and after that point it starts to go downwards.

Third make some marking 40 degrees before that point in the frame.

Fourth beg, steal or borrow an ignition strobe lamp. Connect it according to directions. If it is working ok you sould see the alternator mark move towards that 40 degrees point when adding revs of the motor. The mark should approach this 40 degrees point, stay there (at higher revs) but never go pass it.

The idle position is not important. The fully advanced is.

--Jusupov 22:53, 15 Jul 2005 (CEST)

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