I have a 75, do you have the side tanks X 2?? I am sure you do.
Take them out, its not hard to do, remove the sending unit and you will have 2+" hole there, wash out with water, degreaser what have you, make sure that you rinse well!!
Set in the sun to dry foe a day re assamble with all new hoses and cleaned vents.
Change the filters, one inline and one on the motor, if OB. Check and replace ball pump.
On a scale of 1 to 10 this is a 3 for hardness, because of the fill hoses. They can be a bit of a pain.
one day job, but 2 for the dry time.
Now you ready to go!!
Heres what I found in my tanks, and alot of dirt also!
