1978
An Evinrude outboard, model number 35853R, would be a 1978 model, 35 hp.
1978
The 1978 model, 88 hp Evinrude outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
A 15804b is a 1978 motor.
1978
1978
50:1
No difference whatsoever .... zero ... nada ... zilch !
8.3:1 is stock
Check the spark. If that's good check compression and timing. Check the spark. If that's good check compression and timing.
The model is a 1978