Logo
FULL SITE MENU

1974 Johnson 25 hp Main jet

J

JohnAB

Guest
" I have a 1974 Johnson 25 hp.

" I have a 1974 Johnson 25 hp. Model 25E74M Serial #c47280.

Question is, can a person change the main jet to a smaller one? Engine losses power big time under load at high speed. If just me in the boat I cruise right along, but get another person in it and it is like you still have the anchor out.

I know on my snowmobile a reduction by one size in the main jet made a world of difference in top end power and performance. "
 
Should add that it does not s

Should add that it does not seem to open up when loaded down. And sure seems to burn way too rich at top end.
 
Back
Top