1976 4.5 hp mercury outboard not pissing/ thermostat location

[enginedude]

I just bought this motor and its not peeing I cranked it up no prob there was no water comming out the pee hole just a lil smoke. Well I kept it running for a couple of minuets just to see if maybe it needed to heat up a little but then there was alot of smoke comming out of the pee hole. So I shut it down. now before I try to pull out the impeller I would like to try to run it without the Thermostat installed to see if its just a bad T-stat. Can anyone tell me the location of the T-stat Im not familiar with this style motor and mercury. Please any help I want to go fishing today. Thanks

 

[emckelvy]

Re: 1976 4.5 hp mercury outboard not pissing/ thermostat location

This motor has no thermostat. Replace the impeller.<br /><br />While you have the lower unit off, blow air up the water tube and make sure it's free-flowing thru the powerhead. You can also hook a water supply up and see if you have proper circulation.<br /><br />If not, you have other problems which could include silted-up block (pull the block cover over the spark plug holes and clean out); a squeezed-off water tube grommet under the powerhead (requires powerhead removal); or perhaps broken-off impeller blades in the water tube or block.<br /><br />Anyhow, the most common on these, especially when sitting for a long time, is a curled-up impeller.<br /><br />HTH..............ed

 

[enginedude]

Re: 1976 4.5 hp mercury outboard not pissing/ thermostat location

How do I disconnect the lower unit to check the impeller