high revs

[Guest]

I've just bought a 81 gs 550m when I start it up it idled ok for a minute or so then the revs increase up to around 3500 ,,,,, can any one help me ?

[tkent02]

Is the choke on or off? If the choke is on it will idle high one it's a little bit warm.
What maintenance have you done? Air leaks? Throttle cables too tight?

[moxy]

Hi not done nothing yet only got it yesterday but battery was flat , got that charged up and fired it up

[moxy]

The choke was off

[tkent02]

OK, well you hve a lot of work to do, let me help you get started.

http://members.dslextreme.com/users/bikecliff/

Welcome to the best old bike forum in existence.

[Nessism]

Check the Newbie Mistakes thread linked in my signature.

[moxy]

Anything obvious to you guys that it could be? I need it sorted for work monday

[Nessism]

Anything obvious to you guys that it could be? I need it sorted for work monday

Yes, obvious problem. Check the Newbie Mistakes thread like I linked and you will find the answer.

[tkent02]

ONe of the things in Cliff's website.

I would guess air leaks, but I'm sure there's more to it than that.

[moxy]

I take it you mean ignition and valve train ?

[tkent02]

Probably not ignition, those usually either work or they don't.

Valves certainly need to be checked if they haven't been, but they won't cause it to rev up like that. Usually it runs fine until the valves burn.

Really there are no successful short cuts, if you want the bike to work well, do the required maintenance. Is there any record of the previous owner maintaining anything?