2004 MErcury 115 hp 4 stroke Prop shaft

[nutmeggroup]

I recently hit some rocks with my 2004 Merc 115 hp,
The Skeg cracked and the prop was hit as well.
I put a skeg gaurd on the broken Skeg & I replaced the prop.
I test drove the boat and was unable to plane or break 10 knots.

After examing the prop I saw that the prop shaft is possibly bent after spinning the prop by hand I noticed it was slighly off.
I have a few questions:
If the prop shaft is slightly bent can this prop be machined or straightened?
How complex of a job is it to replace the shaft?
Does it require several tools or should it be left to a shop to perform?
Also when replacing the shaft is it a good idea to replace any bearing or rings since it will be apart.

 

[Dave1027]

Re: 2004 MErcury 115 hp 4 stroke Prop shaft

Propshaft must be replaced. Probably bearing and seals too. I don't have the tools to do it. I would guess dealer service required.

A better idea is to find a good used lower unit instead. That would be an easy end user swap.

 

[nutmeggroup]

Re: 2004 MErcury 115 hp 4 stroke Prop shaft

I do have insurance on the boat I could file a claim for this damage.
Not sure if an entire lower unit would be required here?

 

[Dave1027]

Re: 2004 MErcury 115 hp 4 stroke Prop shaft

All I'm saying is this repair MAY get expensive. You may find a used lower unit from a blown motor cheaper.

I'm just reading what you are posting. You say bent propshaft and broken skeg. Maybe the entire housing is tweaked? Who knows the extent at this point?

I once had a propshaft replaced. It cost $600.

 

[nutmeggroup]

Re: 2004 MErcury 115 hp 4 stroke Prop shaft

I am just wondering how hard it is to replace a prop shaft ?