Idle question

Nicolas Anbeek /

If a moped is idling too fast, will this somehow damage it, perhaps the clutch?

On my Batavus if I set the idle so the wheel doesn't spin, then it always dies out at a stop. The only way it will stay running is if the idle screw is turned much more - i.e. the rear wheel is spinning a lot. Is it ok to leave it like this?


Re: Idle question

Apply the rear brake to stop the spinning wheel. When you get the idle set where you think you want it, holding the rear brake on, shove the bike forward off the center stand and see if the bike idles ok with the rear wheel on the ground and the engine running.

Re: Idle question

moped tech /


Yes, having the idle screw in more than it should normally be is the same as sitting at a stop on a perfectly running moped and then giving some gas while you have the brakes on. In other words, the perfect moped just sits there at a stop with the clutch "disengaged", the brakes not applied and the engine just simply putt putt putts normally. On such an old bike as a Batavus you might want to do a compression check.To do this screw the end of the comp hose into the spark plug hole with its other end connected to the gauge.Then twist the throttle to full open and hold it there and then crank your ped over. Decent comp should be approx

120 psi or better. There are a lot of other causes too: loose cyl head nuts, a carb that is loose on its inlet pipe, bad ignition timing, etc. etc. Just remember, don't keep wearing out the clutch since parts for a Batavus engine are tough to find. If you find that with the engine off and ped up on the centerstand you then try to turn the rear wheel in a forward rotation and the result is that the engine is turning over (without the clutch lever being pulled) you then have a clutch drum that is not disengaging. Anyway, try some of these things, but be patient. Good luck

Re: Idle question

Thanks for the help and advice guys... I will get this thing idling properly if it kills me... :)

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