Head Torque spec. 15 hp evinrude

waybill · #1 July 2nd, 2003, 11:27 AM

What is the head torque for a 1967 evinrude 15 hp motor. I have to put in a new head gasket.

waybill · #2 July 2nd, 2003, 03:07 PM

I was told the spec should be 65 to 80 in-lbs. Does this sound correct.

Paul Moir · #3 July 2nd, 2003, 06:58 PM

I can't find any '67 15hp. The closest is '56.

Please post your model number. If that's a typo and you mean an 18, then it's 108in/lbs.

waybill · #4 July 3rd, 2003, 04:05 AM

I do not have a model number but the serial number is 15702AC521538. It is called a Worktwin.

cotterman · #5 July 3rd, 2003, 04:13 AM

model number is the first part of that

15702 is a 1967

good luck

Paul Moir · #6 July 3rd, 2003, 10:05 AM

Ahh, a Canadian only Evinrude. No wonder I couldn't find it.

Picture

Sorry, I have no information on that engine, but...

Since it has the same displacement as the '56 15hp fastwin (19.94 CID), I would guess it's the same block & head, in which case it would still be 108 in/lbs (96-120).

In '57 the bore was increased and the stroke decreased on the fasttwin, and that made it an 18hp.

Of course, the above is just a guess. The only way to know would be to check the OMC service manual for this engine. The Seloc manual for the year range doesn't cover your engine. I doubt Clymers does either since it's also an American publication...

waybill · #7 July 3rd, 2003, 01:29 PM

Thanks for the pictures and the information.