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What is the compression on a 1978 20hp mercury outboard?
The compression on a 1978 20hp Mercury outboard typically ranges between 100 to 120 psi for each cylinder when the engine is in good condition. It's essential to check the compression using a compression gauge to ensure optimum performance, as low compression can indicate issues such as worn rings or valves. Regular maintenance and checks can help maintain proper compression levels.
How do you adjust the idle on a 80 hp Mercury Outboard engine?
1978 80 Mercury Outboard IDLE ADJUSTMENT
How old is Mercury 9.9 hp outboard with number 08245999?
1978
What year mercury is a outboard 50 hp serial number 5111678?
A 50 hp Mercury outboard, serial number 5111678, is a 1978 year model.
What year model is 70 hp mercury outboard serial no 4830934?
1978
What is the gas to oil ratio for a 1978 9.8 mercury outboard?
The 1978 model, 9.8 hp Mercury outboard, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
What year mercury outboard 9.8 hp serial number 5208019?
A 9.8 hp Mercury outboard, serial number 5208019 would be a 1978 year model.
Can anyone tell me how old this motor is 9.8 hp Ser No 4999954 Mercury Marine outboard?
Hello.... it appears your outboard is a 1978.
What is the oil to fuel mixture for a 1978 115 hp mercury outboard engine?
The 1978 model, 115 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
What year is a merc outboard 90 hp 4849632?
A 90 hp Mercury, serial number 4849632, is a 1978 year model outboard.
What is the proper gas to oil ratio mix for a 1978 Mercury 75 horsepower outboard motor?
The 1978 model, 75 hp Mercury outboard, requires a 50:1 ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.
Is the gear ratio the same for 1978 80 hp mercury outboard and a 1978 90 hp mercury outboard?
No as all the inline 6 cylinder motors are a 2:1 ration and all the small inline 4 cylinder are 2:3:1 ratio
