Re: Sears Gamefisher 7.5 leaking oil from back of engine
Anybody else have a Sears boat motor with a Tecumsey engine that leaks oil from the back of it,or it just mine?.....thanks Robert
All 2 cycle outboards condense a portion of the un-burnt oil in the exhaust inside the exhaust tower which will later weep from the drain holes and exhaust outlet. The amount varies depending on many factors---fuel/oil mix, type of oil, water temp, efficiency of combustion (i.e.: proper fuel/air mix from carb and basic state of tune) and predominant usage profile---if you spend many hours at part throttle-- as in trolling--and little at full throttle to 'clean it out'.
I just have my wife save foil pie pans for me and slide one under the lower unit when idle---I even toss dirty paper shop towels in the pie pans to absorb the mess.
Remember---not ALL oil is burned! Some serves as coolant to remove heat from the engine and WILL condense in the exhaust leg---the effect being worse in very cold water.
