1978 evinrude 85

chevyboy141

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Aug 15, 2020
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2
i have a 1978 evinrude 85 hp model number 85899c it runs good at low speed but wont plane out acts like it loses power at full throttle i think my jets in my carb bowl have got out of wack not sure how to set them proplerly thanks for any advice
 

racerone

Supreme Mariner
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Dec 28, 2013
Messages
38,881
I do not believe there are any adjustable jets on those carburetors.-------Start with posting the compression test numbers.
 

chevyboy141

Recruit
Joined
Aug 15, 2020
Messages
2
i did put a bowl off of johnson 110 on it and it picks up and runs fine at high speed im just worried about long term damage i am just wondering how far the screw those jets in cause i took them out to clean them and one was loose
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,881
Carburetor jets are screwed in until snug.----They are NOT adjustable !
 
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