19 degrees
19 degrees BTDC, + or - 1 degree at WOT. Around 4 degrees ATDC idle timing.
The dry weight of the 1985 model, 70 hp Evinrude outboard is 257 lbs.
The 1977 model, 70 hp Evinrude outboard requires an NGK BZ7HS-10, or a Champion QL77JC4 Plug gapped to .030 in.
A 70 hp Evinrude outboard, model number E70ELCO, would be a 1985 year model.
50:to1
The dry weight of a 1979 70hp Johnson outboard is 240 to 256lbs. depending on the model.
135 to 160 most important thing is that they are all less than 5 psi difference
The 1981 model, 70 hp Evinrude, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
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.
The idle adjustment on a 70 hp Evinrude outboard motor is typically located on the carburetor(s). Look for a screw or knob labeled "idle mixture" or "idle speed" near the throttle linkage. Adjusting this screw can help fine-tune the engine's idle RPM and fuel mixture for optimal performance. Always consult the owner's manual for specific instructions and settings for your model.
It is a 70 HP 1975 Evinrude. The 5 indicates the year. I just bought a1975 Evinrude yesterday & looked up the number.
A 1979 70 HP Johnson burns about 3.5 GPH at 3/4ths WOT