Question about Yamaha TZR 250 Motorcycles

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Just bought it yesterday, my tzr 250 was going sweet today it wont idle. its all good if i hold it at about 2500 rpm any lower and it dies. also when i put it in 1st and try to take off it sounds as if its not getting enough fuel. is that just dirty fuel or is there something wrong with the carb? it wouldn't idle properly when i bought it either

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When a bike sits the first thing to check is the pilot jet. It has the smallest hole and clogs the easiest. When it clogs you lose idle. Open the carb and look for a small hole next to the main jet, the pilot sits up inside. You need a narrow screwdriver to get up in there. Be sure you have a good fit so as not to strip the soft brass jet. I use a guitar string of the right diameter to clean out the hole. The varnish can be very hard, get it back to brass without removing metal is tricky. Squirt cleaner up into hole where the pilot goes with jet out. It should squirt through into carb air passage. Check float and float needle for cleanliness and smooth movment.Reassemble and try again. Good luck.

Posted on Apr 06, 2011

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