Is it a freshwater cooled or a saltwater cooled engine
, VP made both for this model?
The exhaust elbow is not serviceable, needs to be replaced if it is blocked. The water passages are cast outside the exhaust tube, they clog up and you can’t get into them.
In the saltwater engine, it is common to have salt
scale block the hoses and tubes, take them off and clean them out.
You also need to check the pump
impeller, may as well replace it while you are there. Don’t forget the paper washer.
If it is a freshwater engine, you also need to inspect the heat exchanger
Another cause of overheating
in the saltwater engine is the wrong thermostat. The salt
one is 140 degrees and the fresh one is 170 degrees, easy to get wrong. I don’t think your problem sounds like the thermostat though.
That is the extent of my fun times with my 2003. I have a spare exhaust elbow which I clean out with neat HCl when I get it home blocked, works so far and I just swap it over with the other one every few years. The acid may eventually rot
through, but my original one had managed to rust right through just with saltwater and the wrong thermostat.
If you change your one it may be worth a go, it’s good to have a replacement, but remember my advice about cleaning
it with acid is worth what you have paid for it.