Maintenance & Technical > KX500 Original

kx500 timing jetting

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Hillclimb#42:
 I read on here that retarding the timing helps to turn more r's as a cheap mod. It seemed to work for mine. (97 k5) It seemed to be alright on the bottom but stopped pulling once I got past the mid. It is a minor movement, but helped a bunch!!! I would move the timing mark back and see if it helps. What pipe are you running.
 By the way I'm running 58 Pilot, 168 Main, 3rd clip position. Of course it is all relative to your elevation, temperature, fuel mixture, humidity, engine mods... everything basically. If you are close to stock then start with stock jetting.
 Visually inspect reeds, air cleaner, float adjustment, silencer, carb interior. What have you already tried and then eliminated?

BDI:
If you have week spark it will cut out under load You should check all of the coils with ohm meter. the specks are all in the shop manual and it is easy to do if you have a shop manual. If you have a bad connection or broken wire you will usually find it when checking the coils because you have to unplug every thing and check it. when you have a problem like you have, you have to systematicallay check and trouble shoot every oporating system of the bike. If you do this properly you will usually diagnose the problem in no time. Otherwise you will waste a bunch of time guessing and all any one else can do for you is guess what may or may not be wrong.

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