This is the ratio of gasoline to outboard motor oil. 50:1 is the most common mix ratio. This equates to just about 1/2 quart of outboard oil per 6 gallon tank of gas.
500 ml of fuel 10 ml of additive
20 litres fuel 1 liter oil
500mill
100
5l
100
Mix air,heat and fuel.
The fuel mix is 24:1
35:1 is the fuel mix ratio
12.8 u.s. ounces
501 is evenly divisible by 3, 167, 501 and 1. 501 / 3 = 167 501 / 167 = 3 501 / 501 = 1 501 / 1 = 501
Per Service Manual - Spark Plug Gap is .040" - Plug is Champion L77J4 Fuel Mix is 50:1 or 12 gallons Gas to 1 quart TC-W Outboard Motor Oil
17 to one by weight air to fuel
105% of 501= 105% * 501= 1.05 * 501= 526.05
98% of 501= 98% * 501= 0.98 * 501= 490.98
60% of 501= 60% * 501= 0.6 * 501= 300.6
They are -501 and +501
STOCK MOTOR CYCLE FUEL MIX IS 32:1 MOD MOTOR CYCLE FUEL MIX IS 40:1