When i stand on the kick starter to start the bike it just goes all the way down to the bottom and does not catch
im thinking a seal but i dunno which one
its a yamaha yz490
2007-06-09 08:11:11 · 5 answers · asked by Anonymous in Cars & Transportation ➔ Motorcycles
Either low / no compression - remove the L crankcase cover (don't worry, there's no oil) and move the kick start. The flywheel will move if the kick starter is working. If it moves - top end damage (cylinder, piston & rings).
OR
Kick start spindle is damaged.
Kick start idler gear damaged.
Clutch gears damaged.
Primary gears damaged.
Prinmary gear is loose / sheared the key on the crankshaft.
You'll have to drain the oil, remove the R crankcase cover and inspect everything.
2007-06-09 08:41:53 · answer #1 · answered by guardrailjim 7 · 1⤊ 0⤋
sounds like no compression. if you have had the bike for awhile and not done the top end then more than likely that is probably what it will need .
2007-06-09 09:27:34 · answer #2 · answered by jDH123 1 · 0⤊ 0⤋
Low compression maybe
2007-06-09 08:16:40 · answer #3 · answered by Anonymous · 1⤊ 0⤋
no compression. dont know whats causing it could be a seal. but google it see what you find.
2007-06-09 08:19:48 · answer #4 · answered by ? 3 · 0⤊ 0⤋
I would have to say no Compression.
That's caused by, bad piston rings, bad piston.. bad head/cylinder, bad spark plug hole.
see if you have any coolant left, I often see that that is gone, becasue it could leak, and make a hole...
2007-06-09 09:42:05 · answer #5 · answered by Anonymous · 0⤊ 1⤋