extremely high idle 1980 evinrude 9.9

[kcp1989]

I purchased a boat that has an evinrude 9.9 outboard.<br />I put fresh gas in it today with the right oil to fuel mixture. When I started it in a bucket, it instantly reved up real high.<br />I played around with some throtle adjustments and idle speed but nothing changed at all.<br />So i'm asking if anyone knows what and where the problem might be?

 

[Scaaty]

Re: extremely high idle 1980 evinrude 9.9

See if it has a big knob on the side behind the tiller handle...its for kicking up the idle speed for trolling

 

[Kev]

Re: extremely high idle 1980 evinrude 9.9

Are you saying that when you twist the twist grip, the RPMs do not change at all?<br /><br />Have you looked under the cover to see if the throttle plate in the carb is opening and closing when you twist the twist grip?<br /><br />Also, check the link-n-synch to make sure the line on the cam follower lines up with the cam follower roller just as the throttle plate starts to move.<br /><br />Also, make sure the needle valve (Lean-Rich knob) is set properly. If you do a search for carb adjust by J. Reeves you can find instructions, or go here:<br /><br /> http://forums.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=36;t=000034 <br /><br />for an awesome resource on 9.9/15 motors.<br /><br />Lastly, I wouldn't rule out a dirty carb or clogged idle jet, which could adversely affect your air/fuel mixture. <br /><br />If you check all these things and report back I'm sure someone can help you out.<br /><br />Happy Boating!<br />Kev

 

[kcp1989]

Re: extremely high idle 1980 evinrude 9.9

the twist grip is extremely hard to twist.<br />the idle speed knob didn't do anything.<br />I am going to check the carb tomorrow.

 

[marinemech1]

Re: extremely high idle 1980 evinrude 9.9

run motor on a boat for any idle adjustmnts<br />unless you always plan on using it in a can