Jumping 25hp Mariner Outboard

dirtrybird

Cadet
Joined
Apr 18, 2010
Messages
10
I have a 1993, 25hp, Mariner tiller outboard. The problem is that when it's idling (in neutral) it jumps quite a bit although it never stalls. I replaced the plugs thinking that they were the problem but there was no change. Any suggestions? Should I try replacing the fuel filter next?
 
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