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use the evaporator coil cleaner mix 1 part cleaner and 3 parts water as directed spray on and use stiff brush for hard spots works really well p.s. I polished my toon immedity after cleaning them

pitch question i read somewhere that 2" of pitch will raise / lower rpms 300 to 400 rpms but how much will the speed change at given rpm or are there to many varibles i know that pitch has to do with the distance of travel per revolution

i have a 21 ft pontoon with a merc 60 hp four stroke big ft engine i am only getting about 15 mph does this sound right the prop is a 14x10 red line on engine is 6000 wot will over rev the engine any suggetions on how to get more speed or correct prop size :brickwall:

found the problem it was corrosion on the battery terminals gee how simple

i have a 60 hp efi merc i went out the other day and as soon as i got past the no wake zone i went to wot (wide open throttle) and the alarm went sounded immediately i backed off it was silent so i throttled slowly and found the alarm sounded at 4000 rpms and went off at 2000 rpms has anybody...

YES THANKS THE GUY THAT MADE CANVAS COVER FOR MY BOAT RECCOMMENDED A PRODUCT BY THE NAME OF ALUMABRITE SOLD AT WEST MARINE THAT WORKED WITH A LITTLE SCRUBING SO BEING IN THE HVAC INDUSTRY I USED THE COIL CLEANER THAT WE USE FOR EVAPORATER COILS THAT REALLY WORKS WELL

hey chris a quick note on your poll yamaha has built most of mercs 4 stroke powerheads through 2004

i don't have any pictures but if you look at your out drive you will see gray corroded metal and that will be your anode if you get a service book an your type of motor it will show a picture and location of all your anodes hope that helps

thanks chris i have also posted in the aluminium section as that is the material of the pattoons

I have a pattoon boat and cannot get the scaling off the bottom of the pattoons below the water line any sugestions ive tried mutiple cleaners to no avil even used hvac coil cleaner

I own a pattoon boat that i leave in the water i am tring to clean the scaling off the pattoons with no avail i have pressure washed used pattoon cleaner with a wire brush please help if you can thanks Hillbilly