question about a 1987 85 hp force propeller

1fullforce

Seaman
Joined
Jul 6, 2007
Messages
51
hi guys , I FINISHED REBUILDING MY CARBS, NEW FUEL PUMP , NEW IMPELLER , THANKS TO ALL OF THE INFO/ TIPS ON THIS SITE AND ALSO ON MY REPAIR MANUAL, DOES ANYBODY KNOW HOW TIGHT THE PROPELLER NUT NEEDS TO BE (TORQUE SPEC.) I DO NOT WANT TO GET IT TOO TIGHT OR TOO LOOSE. THANKS IN ADVANCE
1987 85 HP MODEL 856X7A
 

MWBROWN

Petty Officer 1st Class
Joined
Feb 7, 2006
Messages
231
Re: question about a 1987 85 hp force propeller

My little hand book that came with my 1984, 85 hp said to tighten the nut so there is no more play fore and aft. I thighten mine just a bit past that.
My nut is a nylock type that goes on hard, as designed. Your engine since it is an 87 might be different. I am not sure.

Hope this helps.

Mike

Just checked mercruiserparts dot com and the part number is the same on both engines.
 

1fullforce

Seaman
Joined
Jul 6, 2007
Messages
51
Re: question about a 1987 85 hp force propeller

My little hand book that came with my 1984, 85 hp said to tighten the nut so there is no more play fore and aft. I thighten mine just a bit past that.
My nut is a nylock type that goes on hard, as designed. Your engine since it is an 87 might be different. I am not sure.

Hope this helps.

Mike

Just checked mercruiserparts dot com and the part number is the same on both engines.

thank you mike
 

MikDee

Banned
Joined
Jun 6, 2007
Messages
4,745
Re: question about a 1987 85 hp force propeller

IMO, Put the engine in neutral, Grab a prop blade with a glove, or hand protector, and tighten it with a wrench till just before it begins to slip from your grip. Then it will be just the right tightness to remove it in the future also.
 

Scaaty

Vice Admiral
Joined
May 31, 2004
Messages
5,180
Re: question about a 1987 85 hp force propeller

Stick a 2x4 between the prop and anti-vent plate...crank it tight...good to go (pull yearly and use Marine grease on the splines..)
 

MikDee

Banned
Joined
Jun 6, 2007
Messages
4,745
Re: question about a 1987 85 hp force propeller

Stick a 2x4 between the prop and anti-vent plate...crank it tight...good to go (pull yearly and use Marine grease on the splines..)

Way too tight for my liking, so be it.
 

1fullforce

Seaman
Joined
Jul 6, 2007
Messages
51
Re: question about a 1987 85 hp force propeller

I Found The Propeller Torque Spec. On My Repair Book , It Is ***55 Lbs*** For My 1987 85 Hp Force (propeller Nut Is A Self-locking Nut) Thanks Everybody
 
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