BEFORE YOU OPERATE 4. Remove the dipstick. The oil level should be between upper (Figure 6, (4)) and lower (Figure 6, (5)) lines on the dipstick. NOTICE If you intend to operate your equipment at temperatures outside the limits shown, you must consult your authorized Yanmar Marine dealer or distributor for special lubricants or starting aids. 5. Add oil if necessary. See Adding Engine Oil on page 32 . 6. Fully reinsert dipstick. Adding Engine Oil Checking the Engine Oil 1. Remove the yellow oil filler port cap from the filler port (Figure 6, (1)) on the rocker arm cover (Figure 6, (1)) and fill with engine oil. 2 1 NOTICE 3 Prevent dirt and debris from contaminating engine oil.
Carefully clean the dipstick, filler port cap and the surrounding area before you remove the cap. 4 5 0004789 Figure 6 1 – Filler Port 2 – Rocker Arm Cover 3 – Dipstick 4 – Upper Limit 5 – Lower Limit 2. Fill with engine oil to the upper limit (Figure 6, (4)) on the dipstick (Figure 6, (3)) . Note: 3YM30 shown. Other models are similar. NOTICE 1. Make sure the engine is off. It is recommended that the engine be as level as possible before checking the oil. Never overfill the engine with engine oil. 3. Insert the dipstick fully to check the level. NOTICE NOTICE Prevent dirt and debris from contaminating engine oil.
Carefully clean the dipstick, filler port cap and the surrounding area before you remove the cap. Always keep the oil level between upper and lower lines on the oil cap / dipstick. 4. Hand-tighten the filler port cap securely. 2. Remove the dipstick (Figure 6, (3)) and wipe with a clean cloth. 3. Fully reinsert dipstick. 32 YM Series Operation Manual