You can never have too many oars.

Welcome to iboats.


The first three numbers would've helped more. If you remove the cover, you might find an aluminum welch plug somewhere on the powerhead that has the serial number stamped on it. Since it was made in Belgium, I think we can assume it's not a Yamaha-made Mariner.


You might try your public library for manuals. Most of them over here in the States seem to have them. They would be the best source for the water pump procedures. Sparkplugs should be the same as what's in there, but it sounds like your motor isn't used alot, so check them first. It usually takes a lot of years of average use to wear those out.


Gearlube I can help you with. Remove the top vent screw first, then remove the bottom drain plug and drain it out. Refill from the bottom until it comes out the top. That size motor will take less than a pint. Put the top screw in first, then the bottom one. Have plenty of rags handy. It's a messy job no matter how quick you are with those plugs.