Merc 4 cyl/40hp

scarchest

Cadet
Joined
Aug 31, 2001
Messages
27
Trying to figure out model year of this<br />4 cyl/40 hp merc. The sn is OG196839
 

scarchest

Cadet
Joined
Aug 31, 2001
Messages
27
Re: Merc 4 cyl/40hp

Crom, thanks for the reply, and no for the Paul Harvey of the story. I just rebuilt this<br />motor, as the 2 bottom cylinders, and pistons<br />were bad. Now I cant get the thing to run less than 2000 rpms. I have had it apart 4 times, checked reed valves, rebuilt carbs, synced & linked, checked fuel pressure, checked all lines and fittings, timing (all<br />three). If you can think of it I done it.<br />I am getting ready to float check this headless piece of garbage and by the customer<br />a new honda. If anybody has any ideas please <br />respond. Oh yea, The motor originally had 3<br />ring pistons, reinstalled 2 ring pistons,<br />Wiseco said it would make no difference<br />Thanks JMA
 
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