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Poor Running 305 ?

Featured Replies

HELP! I i've just bought, what I think is a 305, but really not sure and don't know how to tell.

The problem is that it starts on choke but the runs erratically, revs quite high and then cuts out unless I can give it a bit of choke. I't's been stood a few years. Can anyone help? Does anyone know how many 'turns out' the slow running screw should be? Any ideas??

Wookey

Have you given the carb a good clean out. With it being stood a while the chances are the pilot jet has been blocked up by the fuel going off.

This a common problem and once cleaned out the bike should run somewhere near. Screw should be around 2 turns out.

Good luck.

  • Author

Mmm, thanks, I'll try that. Any idea what grade plug it should have?

  • Author

Brill, got that. Will print them off. Forum is excellent, wouldn't know where to start otherwise

Also check that the inlet manifold is not cracked or perished - it can give similar faults

  • 1 month later...

Carb is clogged the only reason it runs on choke is that its letting fuel in to the carb. Clean the carb and change fuel line, I had black hose do that exact thing on a 305.

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