Join Date: Jul 2007
Location: Truckee, CA
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Sounds like it may be starving for fuel?. If it has set for more than as few
weeks without draining the carb deposits can form partially blocking the
jets. If pulling the choke part way out helps that is probably the case.
If it has a slow speed mixture control you might try richening it up a bit.
Otherwise you might mix up a half and half mixture of gas and Gumout or Berrymans Fuel Additive, run it for a while, let it set for a day or two
and try it again. If that doesn't work you may have to pull the carb
and thoroughly clean it out. If it runs OK at speed under load the filter
is probably OK and there is probably no air leak? I would guess the low
speed jet is partially blocked?