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135 to 160 most important thing is that they are all less than 5 psi difference
The dry weight of the 1985 model, 70 hp Evinrude outboard is 257 lbs.
19 degrees BTDC, + or - 1 degree at WOT. Around 4 degrees ATDC idle timing.
It should be at least 70 psi
It should have a minimum of 70 psi.
It is a 70 HP 1975 Evinrude. The 5 indicates the year. I just bought a1975 Evinrude yesterday & looked up the number.
19 degrees
A 70 hp Evinrude outboard, model number E70ELCO, would be a 1985 year model.
1992
The 1977 model, 70 hp Evinrude outboard requires an NGK BZ7HS-10, or a Champion QL77JC4 Plug gapped to .030 in.
The compression gauge reading should be no less than 100 psi. Check all 4 cylinders and note the readings. The lowest should not be less than 70% of the highest reading.
50:to1