YANMAR

OPERATION, LUBRICATION, MAINTENANCE AND TUNE-UP 6 1
Transmission Oil Level Check
screw it in. Pull out the dipstick and read the oil level on
the dipstick.
Check the transmission oil level on a weekly basis.
1. With the boat at rest in the water and the engine off, un- 2. Add oil, if necessary, through the dipstick hole so the
screw the dipstick (Figure 39, typical). Wipe it with a oil level reaches the full mark on the dipstick. Use the oil
clean rag or paper towel. Reinsert the dipstick, but do not recommended in the preceding section.
Daily
Weekly
Every 50 hours
Every 100 hours
Every 250 hours
Every 300 hours
Every 500 hours
Every 1500 hours
Every 2000 hours
Annually
Table I MAINTENANCE SCHEDULE
Check fuel level
Check engine oil level
Check battery
Check air filter
Check transmission oil level
Check drive belt tension
Check electrical wiring
Clean fuel filter
Change engine oil
Drain fuel tank
Replace air filter element
Replace fuel filter element
Change transmission oil
Replace engine oil filter
Adjust engine valves
Inspect thermostat
Inspect seawater pump
Replace thermostat
Replace freshwater (closed system) antifreeze
Ambient Temperature
Below 50" F (1 0" C)
50" - 68" F (lo - 20" C)
6s. - 95O F (20" - 35" C)
Above 95" F (35" C)
Table 2 ENGINE OIL VISCOSITY
Oil viscosity
1 OW, 20W or 20120W
20 or 20120W
30 or 40
50
Model
- -
Table 3 ENGINE OIL CRANKCASE CAPACITY
Oil capacity
lGM, lGM10 1.4 qt. (1.3 L)
2GM, 2GM20 2.1 qt. (2.0 L)
3GM, 3GM30 2.8 qt. (2.6 L)
3HM, 3HM35 5.7 qt. (5.4 L)