- Joined
- May 15, 2010
- Messages
- 3,667
- Reaction score
- 325
- Location
- Central Florida
- LOCATION
- Lake County, Central Florida
Just an FYi or to help someone out..........
A customer brought me a 1980 Evinrude 7.5hp in gorgeous visual condition. Very low hour engine.
He had just purchased it a couple months ago and I was the 3rd (and last) to look at it.
Complaint was no overboard indicator stream.
First "mechanic" put a pump in it and pronounced it repaired.
Second one put a pump in it and told the customer he removed a restriction...and pronounced it repaired.
My labor rate is 96/hr. so I am usually the last to get these engines that have been previously worked on.
Started the engine in the tank and verified no water stream. Blew out the indicator hose even though it had exhaust gases coming out freely.
Pulled the thermostat cover and started the engine to verify water was not filling the block. It was not. Exhaust gases only.
Pulled the powerhead.
Was prepared to pull the exhaust cover and/or the cylinder head if necessary.
Pulled the exhaust tube off the bottom of the powerhead and found that the upper water tube grommet was melted and shut off. Very similar to the issues I see with the 9.9-15hp engines. A simple replacement grommet and a powerhead base gasket is all that is necessary.
Photo showing the upper tube grommet, melted and restricting water flow.
And a photo for the heck of it showing whats left of the flow from a solvent hose attached to the other end of the water tube.
Hope this is of some help to someone along the way.
A customer brought me a 1980 Evinrude 7.5hp in gorgeous visual condition. Very low hour engine.
He had just purchased it a couple months ago and I was the 3rd (and last) to look at it.
Complaint was no overboard indicator stream.
First "mechanic" put a pump in it and pronounced it repaired.
Second one put a pump in it and told the customer he removed a restriction...and pronounced it repaired.
My labor rate is 96/hr. so I am usually the last to get these engines that have been previously worked on.
Started the engine in the tank and verified no water stream. Blew out the indicator hose even though it had exhaust gases coming out freely.
Pulled the thermostat cover and started the engine to verify water was not filling the block. It was not. Exhaust gases only.
Pulled the powerhead.
Was prepared to pull the exhaust cover and/or the cylinder head if necessary.
Pulled the exhaust tube off the bottom of the powerhead and found that the upper water tube grommet was melted and shut off. Very similar to the issues I see with the 9.9-15hp engines. A simple replacement grommet and a powerhead base gasket is all that is necessary.
Photo showing the upper tube grommet, melted and restricting water flow.
And a photo for the heck of it showing whats left of the flow from a solvent hose attached to the other end of the water tube.
Hope this is of some help to someone along the way.
