hey gus and gals iv just got my self a atomik 150cc pit bike(my first) and im told its had sum work done on it (but not sure wat?) but every time i try to start it the kik starter kiks back real hard and cood do sum serious leg damage if you not carfull.. so im wondering is there sumthing i can do to stop this or is it coz of sum sort of engine mod thats been done? cheers..
how do i stop this?
- Thread starter colta51
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sean01
Legend Spanner Spinner
pretty common problem, mostly caused from kicking like a girl and giving it too much throttle..
9 times out of ten it will not need any throttle to start and if it does it only needs to be held right on the start of the throttle.. choke-kick-start..
ie; turn the throttle till you take up the cable slack then kick it..
changing the ignition to a lifan 150 outer rotor kit can reduce this problem too
9 times out of ten it will not need any throttle to start and if it does it only needs to be held right on the start of the throttle.. choke-kick-start..
ie; turn the throttle till you take up the cable slack then kick it..
changing the ignition to a lifan 150 outer rotor kit can reduce this problem too
sean01
Legend Spanner Spinner
if its got an inner rotor kit installed on it replace it with a standard magneto setup.. kick back should be pretty much gone..
MitchAustralia
Well-Known Member
google up, "top dead centre" and it might help you understand that you should kick the engine over at a certain point.
also heres a link to a video which explains some stuff, loosely..
YouTube - starting a cr 500 with tennis shoes on
Hope this helps, Mitch.
also heres a link to a video which explains some stuff, loosely..
YouTube - starting a cr 500 with tennis shoes on
Hope this helps, Mitch.
kick back is usually cause by advance in the timing there is a slight possibility the timing is a tooth or a 2 wrong
for example my dads old road bike has a advance timing feature if you try to start it when advance is on it kicks back like hell when it's off it wont kick back
and i have tried this with an old engine i have.
i put the timing ahead a couple of teeth and nearly every kick it kicked back so it could be that but I'm not sure
for example my dads old road bike has a advance timing feature if you try to start it when advance is on it kicks back like hell when it's off it wont kick back
and i have tried this with an old engine i have.
i put the timing ahead a couple of teeth and nearly every kick it kicked back so it could be that but I'm not sure
MitchAustralia
Well-Known Member
yeah TDR is right, and also might want to read about checking your valve timing, cause I know I had this exact problem and sorted it out by doing my valve timing and kicking at the right time 
just watch when these engine kick back real hard they can jump the kick starter teeth and split the right side centre case, which is a pain to fix, try pushing the kick start to a point where you can feel the compression kick in then give it a major stomp. this should over come the kickback too.
sean01
Legend Spanner Spinner
kick back is exactly that mate.. it tries to turn the engine backwards because its firing way too early and if fitted with an irk there is no flywheel weight keep it turning..
if it has an irk then you could also try and retard the pick up sensor a heap..
well i just did the valve timing as show in a nuther thred and i allso rebuilt the carby (had the wrong screws holding on the bole and needed clean!) and fitted a MSD lead and new plug and it fired up third kik wiv no choke and NO KIK BACK AT ALL! so i ran it for a wile gave it a tune wen warmd up and now it starts no worys at all!
very happy wiv all the help from you guys thanks a heap..
very happy wiv all the help from you guys thanks a heap..
sean01
Legend Spanner Spinner
glad to hear you sorted it out mate...
