Mercury Outboard Lower Unit Drain Plugs

Ok so i just finished my annual oil check fill on the lower unit of my mercury 20 hp outboard.

Mercury outboard lower unit drain plugs.

Stick your thumb and forefinger into the flow from the. Boating accessories new oil drain plugs gaskets washers sierra 18 2244 fits mercury mercruiser 1 mr r alpha alpha i gen ii upper lower units. Make offer 86 35 hp gearcase lower unit mercury. How to remove stuck lower unit drain plugs in an outboard engine.

The vent plug is located near the top of the lower unit almost straight up from the drain plug. Unscrew and remove the vent plug. 80hp mercury marine outboard water pump impeller housing repair kit 80 800. They are absolutely horrible to work with.

These simple yet effective tools are sold individually and have a 3 8 ratchet receiver. Oem 10 79953a2 10 79953q2 drain screw drain screw 4 9 out of 5 stars 22. As soon as you loosen the vent plug the flow of gear oil from the drain plug will steadily increase. They require the use of a slot screwdriver.

86 35 hp gearcase lower unit mercury outboard 40 50 60 hp 78 94 new h2o 20 292 99 28 99 shipping. Mercury marine mercruiser oem gearcase drain plug seal washer 5 pack 26 830749. The drain plugs are threaded into the engine. I thought slot screws had gone the way of the dinosaurs.

Boating accessories new oil drain plugs gaskets washers sierra 18 2244 fits mercury mercruiser 1 mr r alpha alpha i gen ii upper lower units. How to remove stuck lower unit drain plugs in an outboard engine.