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i have a 97 Mercury 40 hp i have water in my lower unit what could cause that could it be comming from some place near the water pump i saw oil residue in the tube that comes out the side of the cowlingfrom the water pump sprays and is visible to let u know the water pump is working. is it possible that i have the water pump wrong or could some seales be bad and is it something i can fix my self that you jerry
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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.
Lower unit diagram 50 hp mercury?
How do I remove the lower unit from my 1984 50 hp. Mercury outboard motor?
How do you remove the lower unit on a mercury 3.9 hp outboard?
Never mind I figured it out
How do you rebuild a lower unit on a 40hp mercury outboard?
To rebuild a lower unit on a 40hp Mercury outboard, start by removing the lower unit from the engine by unscrewing the bolts and disconnecting the shift linkage. Drain the gear oil and disassemble the lower unit, noting the arrangement of parts. Replace worn components such as seals, bearings, and the water pump, then reassemble the unit, ensuring all parts are properly aligned. Finally, refill with the appropriate gear oil and reinstall the lower unit on the outboard.
What is the amount of gear oil in lower unit on a 1973 7.5 hp mercury outboard?
The 1973 model, 7.5 hp Mercury outboard, requires 6.8 oz. of gear oil.
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
Would a lower unit from a 1970 mercury 7.5 hp outboard motor fit a 4 hp of the same year?
No
What is the tube coming from the lower unit of a mercury outboard motor?
It is a speedometer pick up tube.no longer used due to clogging.
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.
What lower unit gear lube should be used on a 9.9 mercury outboard?
Mercury® Marine High-Performance Gear Lube from Basspro
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.
Can you use valvoline 75w-90 synthetic oil in the lower unit of a mercury outboard?
Using Valvoline 75W-90 synthetic oil in the lower unit of a Mercury outboard is generally not recommended unless it meets the manufacturer's specifications. Mercury typically specifies its own gear lube, often requiring a specific type such as Mercury High-Performance Gear Lube or a similar product. Always consult your owner's manual for the correct type of oil to ensure optimal performance and to maintain warranty coverage.
