1979 Yamaha XS750SF in Vehicles August 28, 201311 yr can any one help ? yamaha ybr 125 the spark plug is white; could this be mixture all settings are correct to manuel. it has a catalytic converter all seals seem ok . runs allright up to 45-50 and after that it hesitates as if lack of duce .thanks
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1979 Yamaha XS750SF
in Vehicles
can any one help ? yamaha ybr 125 the spark plug is white; could this be mixture all settings are correct to manuel. it has a catalytic converter all seals seem ok . runs allright up to 45-50 and after that it hesitates as if lack of duce .thanks