I've replaced the water pump (impeller). It seems to still run hot and
no water out of the telltale. There is water coming out of the shifting
rod grommet. Wisner, who has a great website about repair, has
suggested that the thermostat needs cleaned and that the water jacket
might be plugged.

My questions:

Can I get the thermostat cover off without having to pull the whole
powerhead?
It looks like there are 2 bolts way down in the cover and they look to
be trouble.

Can the water jacket be flushed?
I could sure use some suggestions here.

My level of mechanic's expertise is such that I can do
brakes,thermostat replacement on my truck, recently

I feel like I can do this work.
This motor seems to run well and there wasn't much salt or corrosion in
the water pump area, the bolts all came out without shearing off.
Looks like it has been reasonably well cared for. I'd like to try and
take good care of it and do it myself.

Thanks for your help.

GMC

With initial of GMC you should be able to fix anything! Just kidding.

It is common for insects to dob mud in the tell-tale hole, run some stiff
wire in there to see if it is plugged. After replacing the pump impeller
are you absolutely certain that you got the copper water line properly
inserted into the power head? The thermostat is near the top back of the
power head and is usually attached with 2 1/4 inch bolts (7/16 head).
Unless you run in unusually cold water, you can remove the thermostat
permanently. If the cooling system is blocked with mud and residue you will
have to remove the exhaust side plate and clean out the water passages. (I
have worked on 100's of outboards and yours would be the 1st with a blocked
water jacket.)

If all else fails remove the lower unit, remove the prop attach an electric
drill to the drive shaft. Place the lower unit in a pail of water and run
the drill, expect to see water being pumped. If this is not the case,
investigate what may be wrong in the pump housing.

I can not comment on the "2 bolts way down...". need a clearer definition
of these, "look to be in trouble", I can not speculate what the trouble
might be, please explain.

Don Dando


"garcam" wrote in message
ups.com...
I've replaced the water pump (impeller). It seems to still run hot and
no water out of the telltale. There is water coming out of the shifting
rod grommet. Wisner, who has a great website about repair, has
suggested that the thermostat needs cleaned and that the water jacket
might be plugged.

My questions:

Can I get the thermostat cover off without having to pull the whole
powerhead?
It looks like there are 2 bolts way down in the cover and they look to
be trouble.

Can the water jacket be flushed?
I could sure use some suggestions here.

My level of mechanic's expertise is such that I can do
brakes,thermostat replacement on my truck, recently

I feel like I can do this work.
This motor seems to run well and there wasn't much salt or corrosion in
the water pump area, the bolts all came out without shearing off.
Looks like it has been reasonably well cared for. I'd like to try and
take good care of it and do it myself.

Thanks for your help.

GMC

"Short Wave Sportfishing" wrote in message
...
On 22 Jan 2007 05:02:14 -0800, "garcam" wrote:

I've replaced the water pump (impeller). It seems to still run hot and
no water out of the telltale. There is water coming out of the shifting
rod grommet. Wisner, who has a great website about repair, has
suggested that the thermostat needs cleaned and that the water jacket
might be plugged.

My questions:

Can I get the thermostat cover off without having to pull the whole
powerhead?
It looks like there are 2 bolts way down in the cover and they look to
be trouble.

Can the water jacket be flushed?
I could sure use some suggestions here.

My level of mechanic's expertise is such that I can do
brakes,thermostat replacement on my truck, recently

I feel like I can do this work.
This motor seems to run well and there wasn't much salt or corrosion in
the water pump area, the bolts all came out without shearing off.
Looks like it has been reasonably well cared for. I'd like to try and
take good care of it and do it myself.

Thanks for your help.

If you are getting water out of the shift seal, you have a more
serious problem than a simple flush or thermostat will solve.

Working on this engine can be problematic - I'd advise getting a SELOC
manual for it if you can find one.

Other than that - can't help much.

If it is like a 15 Mariner / Yamaha you may have missed lining up the water
tube and the pump. The pump is just pumping in to the leg.

Thanks for your reply Don.
I've got a service manual coming. I'm sure I got the tube lined up
into the new rubber receiver that came with the pump kit.
In looking for the thermostat, I thought it was under a long thin plate
at the back of the head. It looks like there are about 6-8 bolts
holding it on with 2 of them below the line of the case at the bottom.
I sure hope that's not it.
I'd like to remove the thermostat and at least check it.
Do you mind if I stay with you on this while I try and get this fixed?
Thanks again.

Oh, yea...just so you know...I drive a Ford.

GMC


Don Dando wrote:
With initial of GMC you should be able to fix anything! Just kidding.

It is common for insects to dob mud in the tell-tale hole, run some stiff
wire in there to see if it is plugged. After replacing the pump impeller
are you absolutely certain that you got the copper water line properly
inserted into the power head? The thermostat is near the top back of the
power head and is usually attached with 2 1/4 inch bolts (7/16 head).
Unless you run in unusually cold water, you can remove the thermostat
permanently. If the cooling system is blocked with mud and residue you will
have to remove the exhaust side plate and clean out the water passages. (I
have worked on 100's of outboards and yours would be the 1st with a blocked
water jacket.)

If all else fails remove the lower unit, remove the prop attach an electric
drill to the drive shaft. Place the lower unit in a pail of water and run
the drill, expect to see water being pumped. If this is not the case,
investigate what may be wrong in the pump housing.

I can not comment on the "2 bolts way down...". need a clearer definition
of these, "look to be in trouble", I can not speculate what the trouble
might be, please explain.

Don Dando


"garcam" wrote in message
ups.com...
I've replaced the water pump (impeller). It seems to still run hot and
no water out of the telltale. There is water coming out of the shifting
rod grommet. Wisner, who has a great website about repair, has
suggested that the thermostat needs cleaned and that the water jacket
might be plugged.

My questions:

Can I get the thermostat cover off without having to pull the whole
powerhead?
It looks like there are 2 bolts way down in the cover and they look to
be trouble.

Can the water jacket be flushed?
I could sure use some suggestions here.

My level of mechanic's expertise is such that I can do
brakes,thermostat replacement on my truck, recently

I feel like I can do this work.
This motor seems to run well and there wasn't much salt or corrosion in
the water pump area, the bolts all came out without shearing off.
Looks like it has been reasonably well cared for. I'd like to try and
take good care of it and do it myself.

Thanks for your help.

GMC