FUEL AND OIL
eng 61
IMPORTANT: The use of detergent oils, multi‑viscosity oils
(other than Mercury or Quicksilver NMMA FC‑W certified oil or a
major brand NMMA FC‑W certified oil), synthetic oils, low quality
or oils that contain solid additives are not recommended.
Recommended SAE viscosity
for engine oil
a - NMMA FC‑W certified
25W‑40 4‑stroke outboard
oil may be used at
temperatures above 4 °C
(40 °F)
b - NMMA FC‑W certified
10W‑30 4‑stroke outboard
oil is recommended for use
in all temperatures.
Checking Engine Oil
IMPORTANT: Do not overfill. Be sure that the outboard is upright
(not tilted) when checking oil.
1. Turn the engine off. Have the outboard in a level operating
position. Remove the top cowl.
2. Remove dipstick. Wipe dipstick with a clean rag or towel and
push it back in all the way.
3. Pull the dipstick out again and observe the oil level. If oil
level is low, remove oil filler cap and fill to (but not over) the
full mark with the recommended oil.
IMPORTANT: Inspect oil for signs of contamination. Oil
contaminated with water will have a milky color to it; oil
contaminated with fuel will have a strong fuel smell. If
contaminated oil is noticed, have the engine checked by your
dealer.
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