Join Date: Feb 2002
Location: Morehead City NC
I raced a 89 KX500 in 89 and 90 and it always started 3rd kick hot or cold and every time i crashed it.
couple of quick checks to look for.
Crankcase seals? check behind left engine cover for signs of leakage behind magneto and for right seal, has the oil in the transmission increased in level.
Reed valves frayed? inspect.
plug check, is it running nice? should be light brown in colour, anything else then you need to investigate carb. Is it a stock carb or aftermarket?
Is the KIPS system functioning correctly? common problem with stripping the worm gears if incorrectly assembled.
Let me know how you get on with it.
I stopped racing my KX500 as the tracks got more technical and it became a liability, but i loved racing it. Mt 250 was as quick on twisty tracks, hills was another matter all together LOL
Speed kills play safe and buy a Honda!