1972 Johnson 9.5hp seahorse

jon1234

Cadet
Joined
Jun 20, 2005
Messages
11
I need some assistance<br />I have a 1972 Johnson 9.5 seahorse short shaft outboard<br />I just bought it and got it home.<br />I got it started and running quite well. <br />the problem I have is it runs well without the engine cover. As soon as I install the engine cover the engine slows down and stalls. it is like i am choking off the airflow<br /><br />Any suggestions<br /><br />Jon
 

RPJS

Lieutenant Commander
Joined
Jul 29, 2002
Messages
1,572
Re: 1972 Johnson 9.5hp seahorse

Hi Jon<br /><br />Chances are that the exhaust is leaking, check the exhaust cover plate and the power head gasket.
 

jon1234

Cadet
Joined
Jun 20, 2005
Messages
11
Re: 1972 Johnson 9.5hp seahorse

thanks <br />I will give that a go and get back to you today<br />Jon
 

wayne h

Master Chief Petty Officer
Joined
Apr 29, 2003
Messages
862
Re: 1972 Johnson 9.5hp seahorse

9.5s are known for bad exhaust donut.
 
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