The 850 model, 85 hp Mercury outboard, is a 2 stroke engine requiring a 50:1 fuel to oil ratio.
For the Mercury 9.9 Two Stroke Engine it is 50:1...
50:1
Yes
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At TDC of the compression stroke for cyl #1, the cam lobes will be in a position such that they are putting no pressure on the valves, and valves are closed. At TDC of the exhaust stroke for cyl #1, the lobes will be in a position such that intake and exhaust valves may be open. Exhaust will be closing, and intake will be opening. There are two revolutions for the crank for one of the cam. TDC usually refers to TDC of the compression stroke, when valves are closed. This is when combustion/spark occurs, and is when the valves are adjusted on most engines.
50:1
50:1
Fuel to oil ratio for a 8 hp Mercury, 2 stroke model, is 50:1. This is roughly measured out at one pint of 2 stroke oil, to six gallons of fuel.
50:1
if you have the number four cyl on compression stroke you would want the rotor pointed at cyl 4
50 to 1