The WG7 is a pretty strong running motor 10hp was a real conservative rating probably more like 14 or so. The lower units on that age Wizard and Mercury motors used grease. I use the lubriplate 105 others use John Deere corn head grease. Squeeze the tube in the lower hole until it comes out the vent. Clean the points well and adjust them check coils at lot of them are crumbling due to age, pull the carb float out and replace or coat with fuel proof model air plane dope. (clean the tank well even if it looks clean, i did not the first time and wound up with a mess in carb.) Pull the prop and remove the cover behind it and replace the impeller ( cover has left hand threads so turns opposite of what you expect) they usually stay bent or crumble not worth the risk of burning up a motor. Any questions just ask. I have two WG7s and a Mercury KE7. Wizard ignition is easier to work on.