Powerhead removal 135

rob 135

Petty Officer 2nd Class
Joined
Aug 8, 2013
Messages
167
Does the engine shroud come completely off ? I removed 3 bolts each side and 4 nuts 2 at front and 2 back. Shift linkage and wires. The lift bracket uses the flywheel puller 3 bolt holes , those are strong enough to pull powerhead off .
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,438
Re: Powerhead removal 135

There are 2 short bolts at the front as well.-------Also 2 bolts ( 1/4" ) that hold lower cowling too.--Lift bracket is strong enuff.
 

rob 135

Petty Officer 2nd Class
Joined
Aug 8, 2013
Messages
167
Re: Powerhead removal 135

Will the shroud just drop down? I was worried would pull threads from flywheel and come crashing down . What really needs to come off to pull powerhead ? Book says starter ,etc.... I no some things can stay attached and removed after
 

Bosunsmate

Admiral
Joined
Apr 7, 2012
Messages
6,135
Re: Powerhead removal 135

What years that?
Sometimes you need to rock the engine side to side to split the seal apart.
Are the two at the back the ones under exhaust? If so they can seize in quite badly. If its the motor im thinking of i needed to remove the exhaust plate and drill them out from the inside
 

Bosunsmate

Admiral
Joined
Apr 7, 2012
Messages
6,135
Re: Powerhead removal 135

Yeah starter and all that can stay on, just makes it a bit heavier to lift off.
Go around it checking nothing is still connected to base and you should be fine
 

rob 135

Petty Officer 2nd Class
Joined
Aug 8, 2013
Messages
167
Re: Powerhead removal 135

I got nuts off under exhaust . Haven't tried lifting yet . Didn't want to start removing extra stuff till on bench . No broken bolts . Which bolts break on this motor ? 1973 135 hp
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Powerhead removal 135

Any of them depending on where they were used and how well they were taken care of.
 

Bosunsmate

Admiral
Joined
Apr 7, 2012
Messages
6,135
Re: Powerhead removal 135

Yep the nuts often come off but the bolt and threads that are attached to the block that the nut screws on to are often seized in there. If it does not lift suspect there first.
 

rob 135

Petty Officer 2nd Class
Joined
Aug 8, 2013
Messages
167
Re: Powerhead removal 135

I got manual . Just pics are very hard to see
 

rob 135

Petty Officer 2nd Class
Joined
Aug 8, 2013
Messages
167
Re: Powerhead removal 135

It is original , not a cylmers manual.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Powerhead removal 135

Just curious, where did you get the manual from ??
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Powerhead removal 135

If you can post the address where you got it from.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,438
Re: Powerhead removal 135

Remove the lower unit first.---------Just in case the driveshaft is stuck in the crankshaft.
 

rob 135

Petty Officer 2nd Class
Joined
Aug 8, 2013
Messages
167
Re: Powerhead removal 135

Got powerhead off today. Came right off no problem at all. Removed all the electronics ,tried to take off so most wires attached but didn't work out ., Hope can remember we're all wires go . My luck stator or power pack will crap out from just moving them around . Both are brand new.
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
13,642
Re: Powerhead removal 135

A few good pictures taken before and during disassembly can almost make reassembly a pleasant experience
 

rob 135

Petty Officer 2nd Class
Joined
Aug 8, 2013
Messages
167
Re: Powerhead removal 135

I took bunch of pics . Checked manual to make sure I could see we're wires go . I have rebuilt many a car and lots of diesels ,not sure why this boat motor got me so nervous. Maybe it's the wife breathing down my neck and complaining about all the parts I bought.
 

rob 135

Petty Officer 2nd Class
Joined
Aug 8, 2013
Messages
167
Re: Powerhead removal 135

Got motor tore down . No broken bolts came apart nice . I am thinking might be rebuilt powerhead at one time . Very little wear on parts . Any tips on assembly ?image.jpgimage.jpgimage.jpg
 
Last edited:
Top