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Mercury 40

Mercury 40
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FUEL & OIL
37
MODELS WITHOUT OIL INJECTION
Use a 25:1 (4%) gasoline/oil mixture in the first tank of fuel.
After the break‑in fuel mixture is used up, use a 50:1 (2%) gasoline/
oil mixture. Follow the table for mixing ratios.
GASOLINE/OIL MIXING RATIO CHART
Gas/Oil
Ratio
3.8 liters (1 gal.) gas 11.5 liters (3 gal.) gas 23 liters (6 gal.) gas
25:1 (4%)
148 ml (5 fl. oz.) oil 473 ml (16 fl. oz.) oil 946 ml (32 fl. oz.) oil
50:1 (2%)
89 ml (3 fl. oz.) oil 237 ml (8 fl. oz.) oil 473 ml (16 fl. oz.) oil
Mixing Fuel and Oil
Portable Tank - Pour 4 liters (1 gallon) of gasoline into tank. Add
the correct amount of oil and mix thoroughly. Add the remainder of
gasoline.
Built-in Tank - Using a funnel, pour the correct amount of oil slowly
with the gasoline as tank is filled.
Filling Oil Injection System
1. Place outboard in a vertical operating position. Check oil level
using the sight gauge in front of the outboard.
3100
a
b
a - Full level
b - Add level

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