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Compression on a 1975 70 hp Evinrude outboard refers to the pressure generated within the engine's cylinders during the compression stroke, which is crucial for efficient combustion. Typically, compression readings for this model should be between 90 to 120 psi. Low compression can indicate issues such as worn piston rings, damaged cylinder walls, or valve problems, which can affect engine performance and reliability. Regular compression testing is essential for maintaining the health of the outboard motor.
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What is the oil to gas ratio for a 1975 evinrude 70 hp outboard motor?
50:to1
What is compression on 1986 70 hp Evinrude outboard?
135 to 160 most important thing is that they are all less than 5 psi difference
What is the weight for a 1985 70 HP evinrude?
The dry weight of the 1985 model, 70 hp Evinrude outboard is 257 lbs.
What is the timing for a 1979 evinrude 70 hp outboard?
19 degrees
1977 70hp evinrude outboard what are the plugs you use?
The 1977 model, 70 hp Evinrude outboard requires an NGK BZ7HS-10, or a Champion QL77JC4 Plug gapped to .030 in.
Model number e70elco evinrude motor what year is it?
A 70 hp Evinrude outboard, model number E70ELCO, would be a 1985 year model.
What should the compression be on a 1984 70 hp evinrude?
The compression for a 1984 70 hp Evinrude outboard motor should typically be between 100 and 130 psi per cylinder. It's important that the compression is relatively consistent across all cylinders, with no more than a 10% variance between them. If the compression is significantly lower than this range, it may indicate issues such as worn rings, damaged pistons, or other mechanical problems. Always refer to the specific service manual for your model for the most accurate specifications.
What year is Evinrude model 70573-B?
It is a 70 HP 1975 Evinrude. The 5 indicates the year. I just bought a1975 Evinrude yesterday & looked up the number.
What is fuel mix for the 1981 model 70hp evinrude outboard motor?
The 1981 model, 70 hp Evinrude, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
What is the timing for a 1984 evinrude 70 hp outboard?
19 degrees BTDC, + or - 1 degree at WOT. Around 4 degrees ATDC idle timing.
What is the compression on a mercury 70 hp?
i have a 70hp mercury outboard older late 70's model and the cylinder compression is 135 across the board. it shouldnt be below 100 psi and not more that 15 between any 2 cylinders
What is the fuel oil mixture for a 1975 Chrysler 70hp outboard?
The 1975 model, 70 hp Chrysler requires a 50:1 ratio. This is 3 oz. of 2 cycle oil, to each gallon of fuel.
