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Changing the gear oil in a 4 stroke outboard, is the same proceedure as with the 2 stroke.
Remove the drain plug, at bottom of gearcase, remove vent plug at top of gearcase and let drain. Fill from bottom, (drain plug hole), until lube runs out of top, (vent plug hole). While blocking off drain plug hole, to keep oil from draining, replace vent plug. Make sure that plug gaskets are in place and in serviceable condition. Quickly, replace the drain plug.
What else can I help you with?
1980 115 hp outboard motor mercury oil change how?
first of all what oil your are talking about , i hope not engine oil because there is non that is two stroke engine. lower unit has a draining bolt on the bottom and air or fill bolt on the top of the lower unit....
How do you change lower unit oil in a Yamaha 115 four stroke?
To change the lower unit oil in a Yamaha 115 four stroke one must obtain proper parts, the proper tools, and instructions on how to properly take apart and put together the parts.
How do you remove the lower unit on a 4 stroke 90 hp mercury?
To remove the lower unit on a 4-stroke 90 hp Mercury outboard, start by ensuring the engine is in the neutral position and disconnect the battery. Remove the bolts securing the lower unit, typically located on the rear and sides, and then detach the shift linkage and any associated wiring. Carefully lower the unit, taking care to prevent damage to the drive shaft and water pump. Finally, inspect the gaskets and seals for wear before reassembling.
Lower unit diagram 50 hp mercury?
How do I remove the lower unit from my 1984 50 hp. Mercury outboard motor?
What type of lower unit gear lube for 90hp mercury two stroke outboard?
For a 90hp Mercury two-stroke outboard, you should use a high-quality lower unit gear lube specifically designed for outboard motors. Mercury recommends using their own brand of gear lube, such as Mercury High-Performance Gear Lube or Quicksilver Gear Lube, which offer excellent protection against wear and corrosion. Always check the owner's manual for specific recommendations regarding viscosity and any additional requirements.
Will a 35 HP Mercury lower unit interchange with a 40 HP lower unit?
yes
How do you change lower unit oil in 50 hp mercury outboard?
Take it to a marine repair shop or google it up, the answer is there
How do you change a water pump impeller on a 2003 40 hp Mercury EFI 4 stroke?
Pull the lower unit look into moter leg you will see th water pump on the shaft you may have to pull the shaft to get it but from ther its just bolts on the pump.
What type of oil do you use in mercury outboard lower unit?
If the horsepower of your Mercury outboard lower unit is 75 and below, SAE 80W90 Gear Lube is recommended.
How often do you change lower unit oil in 40hp mercury?
It really depends on usage, but a good rule of thumb is once yearly.
How do you change water pump impeller in 2001 mercury 115 hp outboard?
To change the water pump impeller on a 2001 Mercury 115 HP outboard, first, remove the lower unit by disconnecting the shift linkage and unbolting the lower unit from the powerhead. Once the lower unit is removed, take off the water pump cover by unscrewing the screws and carefully lift the old impeller out. Install the new impeller, ensuring it is oriented correctly, and reassemble the water pump cover and lower unit. Finally, reconnect the shift linkage and secure the lower unit back to the powerhead.
Mercury 90hp 6 cylinder outboard 2 stroke before you take this too water you are going to change the spark plugs is there any oil which requires changing gear oil if so what type thanks?
Changing the plugs and the lower gear oil yearly is best. There are two flat head screw heads on the lower unit, an upper one for filling and a lower one for draining. Be sure to use marine grade lower unit oil not just regular gear oil.
