1993 Johnson 40hp primer problems

basstracker1970

Petty Officer 2nd Class
Joined
Feb 4, 2009
Messages
147
Hello, hope you guys can give me some opinons on this problem I found. My 40hp johnson hasnt been idleing very good in gear kinda like it was knocking and wanting to die but didn't. I got to looking around on the motor and noticed gas all around the primer so I took it off and the top has a big crack in it all the way across it. That was letting the carbs suck air while idleing and running. I think that was my ideling problem but wanted to get some of your opinons. Thank you....
 

Rick.

Captain
Joined
Jul 30, 2006
Messages
3,740
Re: 1993 Johnson 40hp primer problems

That would do it. I think it's a fairly inexpensive part as well. Best of luck. Rick.
 

basstracker1970

Petty Officer 2nd Class
Joined
Feb 4, 2009
Messages
147
Re: 1993 Johnson 40hp primer problems

Thanks Rick I have a new rebuild kit ordered from iboats 12.95.
 

Rick.

Captain
Joined
Jul 30, 2006
Messages
3,740
Re: 1993 Johnson 40hp primer problems

Not sure if you get the part you need with a rebuild kit. Have a close look. Rick.
 

basstracker1970

Petty Officer 2nd Class
Joined
Feb 4, 2009
Messages
147
Re: 1993 Johnson 40hp primer problems

The kit comes with a new plastic top cover ,gasket and the valve.
 
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