1977 Johnson Evinrude 115

[Dalton62]

I am currently trying to figure out why my engine is idling to high. It’s idling at about 3,000 rpms. I have adjusted everything that the manual says to adjust. I’m just hoping someone out there can point me in the right direction.

 

[racerone]

You have to be very careful when you start adjusting things.-------So are all linkages hooked up and the timer base is rotating when you try and slow down ??-------Remove throttle cable at the motor.-----Move the throttle arm by hand at the motor to slow it down.-----Then adjust black thingy on cable to suit , so it pulls against the idle stop.

 

[ahicks]

A vacuum leak can often be the source of a high idle. Might be time to have a good look at the vacuum and primer lines. Or better yet, just replace them.

 

[racerone]

There are not many vacuum / primer lines on a 1977 model 115 HP !!

 

[ahicks]

Not that familiar with the specifics, haven't spent much time on 2 strokes in a while now, so I was speaking in general. That said, is there a pulse line to the fuel pump that might be cracked? Have the carbs been off and the gaskets used over again one too many times?

 

[Dalton62]

I had the carbs replaced last year with I’m assuming new gaskets as well. I check the lines coming into the fuel pump and they don’t look to be cracked or damaged.

 

[racerone]

So is the timer base rotating , yes or no.------Answering questions helps just YOU------Nobody can hear , see or feel your motor !!

 

[MRS]

You had the carbs replaced where did you find carbs for a 77 motor?

 

[Dalton62]

I have not pulled the top of the engine off yet. I am just trying to get a few ideas and then attempt all of them. There is a place where I live that I have been taking this boat to get fixed. He told me he replaced the carbs but honestly he could have just rebuilt them. I am not an expert on outboard engines. I am just trying to save some money with doing the repairs myself. As soon as I get it running I will be selling it. Every year there is something else broke on it. The old saying is coming true about a boat.

 

[racerone]

No need to pull the flywheel to see if timer base rotates.----Is throttle arm being pulled back against idle stop screw ?