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Sep 23, 2005. #2. Re: Winterizing a Merc 90 hp 4-stroke. Change lower unit lub and engine oil. If its carbureted, treat the fuel system and fog the the engine just like you did the two-stroke. If its EFI, you should check the owners manual but treating the fuel system with stabilizer such as SeaFoam and again fogging the engine should be all ...
Sep 16, 2009. #2. Re: Mercury 90HP 2 stroke, 2001 winterizing. The very first step is to add a fuel system treatment such as Sea Foam or Stabil to the fuel. Then connect the flusher, turn on the water and run the engine until you are certain the treated fuel has had a chance to find its way into the engine. A 5 to 10 minute run would suffice.
new at this wondering about winterizing 90 hp mercury 4stroke efi I suspect change oil and filter drain and replace lower unit gear oil grease all nipples lube steering controls my question is about fogging engine is it better to run and induce fogging oil into engine or remove plugs and do...
Re: How To Winterize A 115 Hp Mercury. 1) Change lower unit lub. 2) Flush engine thoroughly (muffs) 3) Add Stabil or SeaFoam to fuel. 4) Run engine long enough to ensure fuel treatment has reached the carbs. 5) Fog the engine. (No need to run carbs dry -- fuel is treated) 6) Store engine vertically to ensure self-drainage.
Start the motor on the muffs, and run it for 5 minutes or so to flush it. Spray fogging oil into the carb intakes until it smokes a lot or stalls. Turn off the ignition. Remove the muffs and let it drain in a vertical position for 10 minutes. Drain and refill the engine oil and filter. Drain and refill the gearcase oil.
Jun 2, 2008. Messages. 122. Oct 30, 2009. #2. Re: Fogging a 90HP Mercury 4-stroke. My air box is a pain to remove, so I just sprayed right into the six intakes on the port side of the air box with the engine at idle. Stuff gets sucked right in, I didn't see it going anywhere else. 1987 Merc 3-cyl 90hp. Funny thing though, my engine never quit ...
Sep 24, 2007. #3. Re: 90 hp merc winterize: draining water. A few rotations of the engine, either with a rope on the flywheel, or with the starter, will enable any water still in the pump to drain out. Make sure the ignition is disabled when you do this. An 82 should have a lanyard switch on the control box.
Sep 22, 2003. Messages. 28,771. Sep 29, 2006. #2. Re: Winterizing a Honda 90 hp. Fogging an engine is essential when layed up as long as yours (and my) engines are. If your engine is fuel injected you definitely do not want to run it dry which is probably why it started hard.
Sep 9, 2013. #5. Re: Winterizing a 25 hp Merc outboard. MH Hawker said: Yes the fogging oil is sprayed in while its running or being cranked so it will coat the intake, reed valves, cylinder walls and the main bearings, crank shaft, connecting rods and bearings, exhaust and other assorted internal parts to prevent rust over the storage period.
Silver Eagle said: If you google winterizing an out board motor kit.you may be in for a surprise. The kit cost $26.95 for a 5 gallon container with hook ups. then you put your rabbit ears on the water inlet and go from there.Of coarse you put some kind of container under the prop to catch the liquid .