Help! I'm going to try to replace prop shaft myself, need manual and any tips.

86bonito

Seaman
Joined
Jan 21, 2005
Messages
55
I bought the boat and motor for $500 a year ago It has a 1989 88 spcl Johnson, it looked completley rebuilt everything was clean new hoses, clamps no crosion on motor and paint looked new, as well as freez plugs. I called the local reccomended shop they quoted me $850 parts and labor which included a new prop shaft, seals and water pump. I asked him about taking my shaft to a machine shop to fix it and he said he wouldnt trust that because if it was out a thousands it would ruin the bearings. But I could get a used one for around $150 if he had a match, which would lower my cost.<br /><br />Before I made any decision I tested the compression which read 120psi on all 4 cyl. Is that avg. or good? I thought It was good but dont know what the specs are.<br /><br />Well I decided to do it myself after I get the Original manual. Where is the best place to find one?? I am a novice outboard mechanic, but have worked on cars for 20 yrs (shady tree mechanic). Should I let the pros do it or follow the manual take pictures and do it myself? Alos where is the best-cheapest place to get the seals and water pump?? Thanks for any input.
 

sly36

Seaman
Joined
Jun 22, 2004
Messages
57
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Hi Bonito with the manuel i do everythink on my engine and here and Iboats are good to help you i find my manuel and parts on ebay or you can have here on Iboats and 120psi ist good<br /><br />good luck!
 

R.Johnson

Rear Admiral
Joined
Sep 24, 2003
Messages
4,446
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

You need a socket to fit the drive shaft splines, and a heavy snap-ring pliers to remove a snap ring that holds the prop shaft bearing carrier. You could have the shaft straitened, I have done that many times.The manual will lead you through what you need.
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Is the shaft just bent?
 

86bonito

Seaman
Joined
Jan 21, 2005
Messages
55
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Yes the shaft is bent and over heat buzzer going off
 

86bonito

Seaman
Joined
Jan 21, 2005
Messages
55
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Previous owner ran it a ground anything enlse I should look for? The casing on the unit is not cracked I'm just conserned about what enlse may be tporn up on the inside.
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Most likely the two are not related. But they both need to be addressed. The propshaft can be straightened to a point. We have it done all the time. If you like I'll give you the number of the guy that does ours.
 

86bonito

Seaman
Joined
Jan 21, 2005
Messages
55
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Still looking for a place to purchase org. manual
 

dajohnson53

Lieutenant Commander
Joined
Apr 28, 2004
Messages
1,627
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Try www.mastertechmarine.com. I think I ordered a Merc OEM shop manual from them a few years ago, and I think they might have John/Rude also
 

ledgefinder

Ensign
Joined
May 2, 2002
Messages
916
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

You might pick up a good used (&freshwater) lower unit, rather than rebuilding.
 

whoitd

Seaman Apprentice
Joined
Sep 11, 2004
Messages
36
Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

Re: Help! I'm going to try to replace prop shaft myself, need manual and any ti

I got mine from www.kencook.com. I got the repair,parts book, and owner manuel from there.
 
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