going to take the head off the 75 force and install new head kit

[my new fishmaster]

I am worried about snaping the bolts off because they recommend torquing them tight. Should I be worried

 

[kev_79]

Re: going to take the head off the 75 force and install new head kit

Do you mean taking them off, or putting them back on. What is your spec? I redid a 90 hp force, and don't recall having any trouble like that, but the torque spec was within reason.

 

[Cwr]

Re: going to take the head off the 75 force and install new head kit

Make sure you are reading the manual right because mine in listed in inch lbs not foot lbs for the head bolts.To convert from in-lbf to ft-lbf multiply by: 0.083333309<br />Conversion result: 120 in-lbf equals 9.999997 ft-lbf.<br /><br />I went to ask.com to get this conversion hope it helps, sounds funny though

 

[thosch]

Re: going to take the head off the 75 force and install new head kit

The formula sounds good. Multiplying by .08333 and dividing by 12 are the same, mathematically.

 

[Backlash]

Re: going to take the head off the 75 force and install new head kit

Hey Fish,<br />Just how much torque are we talking about here? <br />Backlash

 

[dmessy]

Re: going to take the head off the 75 force and install new head kit

Snapping bolts off? Naaah...just follow the "torque and turn" method precisely.Make sure the bolts are CLEAN(ie;wire brush them)and lube the treads AND bottom of bolt heads with your 2 cycle oil. Go with an inch pound torque wrench though.A foot pound wrench is too iffy on this low rating. Good luck

 

[my new fishmaster]

Re: going to take the head off the 75 force and install new head kit

I belive its the tourque and turn method like 120lb then 90degrees. I am guessing its pounds?

 

[Clay]

Re: going to take the head off the 75 force and install new head kit

early models (up to 94) torque was 21 ft lbs<br />94 and newer is 120 inch lbs plus 90 degrees<br />if its torque & turn recomend using new head bolts