Ignition Timing

FirstEliminator · Mar 5, 2005

My 98 husaberg fe501e feels about as fast as my 91 Husqvarna WMX125. I have fiddled around with the carb a bit and it is much better than when I bought it. But it still feels kinda laggy. I haven't taken a compression test, but sometimes I have to stand with all my weight on the kick starter to get it to the proper position to kick it. It usually takes about 6-7 seconds for the comrpession to bleed down. But anyway my new questions are about ignition timing. I cannot figure out how to check timing on this thing. I hear about some window, but the only thing I see on the flywheel is about the size of a pin hole. Do I need to remove the flywheel to check the timing? Is there anywhere I can view the timing proceedure? I saw that Linaweaver mentioned that the optimal timing is between 32-36 for total. Now at what RPM is total timing reached? What should the intial timing be? What method is used to advance the timing? Well, I ordered the service manual but it won't be here for a week. I am really hoping my timing is ********. I think this 501 should have more guts than it does.

thanks,
Mark Piechowski

oyk · Mar 6, 2005

timing

i don't think that the ignition timing is your problem,
however, first you have to mark your flywheel to the pistons top point.
unscrew the spark plug, insert a thin flat screw driver into the hole and turn the flywheel until you reach top point.
mark your flywheel using a marker at the point that there is a mark on the right case (about 12 o'clock of the flywheel).
now, turn your flywheel counterclock wise about a quarter and insert a pin long enough in to that tiny hole of the flywheel you mentioned.
turn clockwise until the pin you inserted comes across with the stator, at this point the mark you did on the flywheel should be aligned with the mark on the right case.

i suggest that you should remove your piston and check the rings by inserting them in to the cylinder (without the piston of course!) and measure the gap between the edges (max 0.6mm for the compression ring and 0.8mm for the oil scrap ring)

does it burn oil?

while you are there check everything else (valves,crankshaft,e.t.c.)

oyk · Mar 6, 2005

are you sure that you use a proper starting procedure?
it is weird to wait until compression bleeds down!

FC501EAST · Mar 7, 2005

Hi, FirstEliminator...
I sent you a pm re timing procedure.

FirstEliminator · Mar 7, 2005

Well, the bike ran better this past Sunday. I keep richening up the carb and it continually runs better. Sometimes I would twist the throttle and it would just die, not very good for when a hole in the ground comes along at 40 mph. This bike really needs a good going over, including the timing. Thanks for the responses so far. Unfortunately looking back, I think this bike was kinda misrepresented. I have a habit of buying projects, so I guess I will be the one to make it right again. Tell ya one thing, that Meyer Racing Tall Soft Seat Foam sure saved my *** yesterday---ha ha ha.

thanks,
Mark

Ignition Timing

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