1990 Mercury 2.5 gasket and torque settings

[atcman]

I've just stripped my 1990 Mercury 2.5hp 2 stroke to clear the cooling channels and am in the process of rebuilding. Can anyone advise me on whether I need gasket sealant on the block and powerhead gaskets and if so what.
Are there specified torques for the block bolts as well?

Serial number is 9720491

Thanks
Andy

 

[carholme]

Re: 1990 Mercury 2.5 gasket and torque settings

That s/n actually comes up as:

2,5 2.5 1-cyl 9682500 9741138 1992 Belgium

From here:

Mercury 2-takt, 1-cyl, 2,2 - 5 hp, produktions?r, modellguide

Parts listing:

2.5/3 HP(NON-SHIFT) - Mercury, Mercruiser, Force, etc. Parts Lookup

The service manual you require is P/N: 90-44477-1. If you do not have this manual, see my message to you in Notifications at the top of this page. This manual will have the answers to your questions and many more.

Gerry