9.9 cooling intake

Post here for issues with outboard engines (i.e Yamaha 9.9) on PDQ yachts
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doubledutch
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9.9 cooling intake

Post by doubledutch »

My port engine has lost it's cooling stream. When you hold your hand in front of the pee hole you feel an air stream so it seems the pump is working. I discovered the problem late yesterday and checked for blockages in the plumbing at engine level but I did not get a chance to get under the boat and check the water intake for blockage.
Can someone tell me what I will find at the lower end? Is there a removeable intake screen?
Allezcat
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Post by Allezcat »

The Yamaha 9.9 has two plastic intake screens located on each side of the lower unit just below the anti-cavitation plate. Suggest you pull the hose off the plastic discharge fitting first and run the engine to check for water flow from the hose.

Chet
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doubledutch
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water runs again

Post by doubledutch »

Well after a lot of poking around I have cooling water circulating again although it is still a bit anemic. I did not find any obvious problem but will keep an eye on the motor and will probably install a new impeller after haul out this fall.
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Post by next exit »

Be sure to check your thermostat too.

Don
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