I fought the heating
issues on mine for a while ... pulled the bundle of tubes in the exchanger, and had a raditor shop clean it out..
and the temp would still climb over 200 when I reved it up over 1800 for any period of time...
So I went back and read the shop manual... now isnt that something, the manual says the opperationg temp should run between 180 and 220....
And just to make sure all was right, I installed a manual guage , still kept the electronic unit... the manual guage would read 190 while the electronic would read 200..
as the prop being "over proped" The manual on our motor
stated max as 3600 on the "NEW" 56 hp motor
.. Maxie Prop says to set the prop to "CHOKE" the motor with the prop about 200 less than max RPM.. We did and our Max RPM while in gear
is 3400.. We uasally opperate around 1800 to 2000 for best power, fuel
usage, and smoothness...
With our tempeture at about 190 to 210 depending