Logo
FULL SITE MENU

What yr and model is this 18 hp engine

S

skipper_who

Contributing Member
I have a 18 Hp engine These nu

I have a 18 Hp engine These numbers on the guaret size plug and on the clamp that holds the engine to boat 18702r e01o78 What year and model is it ty wz
 
You already asked this questio

You already asked this question. The answers still the same its 1967
 
"Now that I know what the engi

"Now that I know what the engine is,I find that it has a johnson lower unit on it. A 20 hp.It pumps water only if the lower unit is 5 ins above the plate,thats above the prop. I have put the fresh water flush on it and it will not pump water. once the water goes below the plate .It does not pump. any Ideas, can I drill a hole to allow it to get water.to the pickup point.In the lower unit. ty in advance.wz"
 
"That plate should be approxim

"That plate should be approximately 3/4" below the bottom of the boat at the keel. Why are you allowing the water to drop below the that plate?

There is a water intake just above that cavitation plate. If you allow the water line to drop below it, the water pump will draw air."
 
"Joe I have the water level ab

"Joe I have the water level above the cavition plate in the barrel 1/2 above it no water 2 ins or more above it it pumps water.I put the fresh water flush on and it does not pump water, the olny time it pumps is when the water level is 2ins or more above the caviton plate wz"
 
"Since that model has two &#40

"Since that model has two (2) water intake points, one just above the propeller and the other via that plate just above the cavitation plate, it is not advisable to run it with a flushette. One of the two water intakes will be drawing air.

It is best to run it in a barrel or trash can. Also, since the water pump if sitting upon the top of the lower unit, it is strongly advised to have the water level two or three inches above the mating surfaces of the lower unit to the long exhaust housing. This procedure insures that the impeller will not be turning with NO water lubrication."
 
Back
Top