Can't start the 1980 yamaha tt250

[mouldy]

umm, kinda mixing it up, trying a few slow ish, 3 beats per kick sounds about right, then i just get frusterated and jump on the fucker hard and fast. never realy had to kick start a bike before so yea, i was kinda wondering if i was doing it wrong???

To kick start a 4 stroke single you must bring the piston just past tdc and then give it a decent boot , repeat this process until it starts and be thankful it has decomp

[smudge]

fair enough, I must have invented the 'fine' thing... hehehehe, it pays to read carefully.

[Wired1]

I'd like to know for sure that it actually was running. I think it probably would run if it was one tooth out but it would be bloody hard to start. If it was more than a tooth out there might be some other issues to look forward to! Get a manual, it will show you how to check wether it is or not.

[G-spot]

Hi, the timing may be out if the engine has been rebuilt. A common cause is that it may have been set to fire on the exhaust stroke instead of the intake stroke. I have seen this done on many Yamaha TT500s before and its simple to fix.
Make sure you replace the spark plug after reseting the timing because the old one will be filled with carbon and it will be sparking across the plug instead of upwards/downwards. If the timing is sweet then its highly likely your carb bro.

[road king]

ok, so we tried push starting. still woudnt start. im no mechanic, dont have the patience. so ive taken it to my favorite bike shop this morning. hopefully wont be to long before i can get out there and have a play

[slimjim]

what's the shop found..?

[road king]

what's the shop found..?

umm, the timing was out by a tooth, had low compresion. they managed to get it running on eathinol, but it wasin running right, and they dont no why