60hp mariner head torq specs

EasyRider156 · #1 October 13th, 2009, 05:22 AM

I have a 2 cylinder 60hp mariner,and was wondering if anyone knows what I Need to torq the bolts to. Im not sure of the year of the Engine, the plate has 675 L 34???, cant remember the last three numbers. All i can say is that its a 2 cyliner, and that it has 8mm stainless steel bolts, they have an 8 on the head so Im guessing their 8.8 grade, and that its an alloy block and head. Any help would be great.

thankyou

EasyRider156 · #2 October 13th, 2009, 05:27 AM

I think it was made some time in the 80's

EasyRider156 · #3 October 16th, 2009, 04:20 AM

I have now put my head back on my outboard with great results, found out of three different machanics, just to make sure, the head bolts need to be torqued to 18ft lbs. Thought i would post this just incase someone needs this info, I had the head machined and would advise anyone to do the same thing to get optimum results,all up this cost me under $100 to get the gasket and machine the head, it was an easy job to do, and would have cost me hundreds to have a machanic to do.
Just dont forget to use anti seize on the bolts, nothing worse than a broken one.

EasyRider156 · #4 October 16th, 2009, 04:33 AM

Tightening pattern used: starting from two middle bolts work in a circular motion,

8 7
4 3
1 2
5 6
9 10

DONT tighten to 18 ft lbs straight up, tighten by hand up evenly, using the pattern, then using torq bar take them up to 10ft lbs then up to 18, then check the pattern again at 18 to ensure they are all even.