nsr150sp

[HM31A]

anyone shed some light on these bikes
any problems to look out for

and where could i track down a workshop manual

cheers mike

[2TInstitute]

Based on the old NF/CR engine with a 58/59mm(can't remember) piston. Pistons are not the best and the needle in the carb has no adjustment. Rear shock is crap the rest is OK. Not a bad little bike really.Parts are cheap from Thailand

[HM31A]

anyone a 150 expert here

as the one i have has got a vibration in the engine when reving so when riding its horrible

thanks in advance

[2TInstitute]

Balance shaft not timed.

[HM31A]

thanks for the prompt response

would they go out of timing by themselfs as the engine has not being touch or do they have an underling issue

[Jeram]

if they balance shaft is a one peice unit cast unit then there is no way for it to go out of timing.

it should just be a matter of taking the clutch cover off and inspecting the balance shaft gear. the gear will most likely have a dimple of mark in it, the gear which connects to it (usually the primary gear) should have a similar mark on (timing marks) the two dots should line up.

if it doesnt have markings then buy the bikes workshop manual and it will most likely be in there.

if its not the balance shaft it could only really be the bottom end bearings.

[HM31A]

thanks for that
bike starts easy so hope its not the bottom end

[2TInstitute]

engine mounts loose?

[HM31A]

engine mounts loose?

yeh
i thought that

will check
thanks for the thought