Yanmar 3YM20 Operation Manual page 29

3. OPERATION
(2) Checking and Re-supplying Fuel
Oil
Check the fuel level inside the fuel
tank and supply with the recommend-
ed fuel, if necessary. (See 3.2.1)
(3) Checking and Re-supplying Engine
Lubricating Oil.
1. After removing the oil filler cap, check
the engine oil level with the oil dipstick.
2. If the oil level is low, supply with the
recommended lubricating oil using the
filler port. Supply oil up to the top mark
on the oil dipstick. (See 3.2.2)
(4) Check and Re-supply Marine Gear
Lubricating Oil
1. Check the marine gear oil level with
the oil dipstick.
2. If the oil level is low, supply with the
recommended lubricating oil using the
filler port. Fill oil up to the top mark on
the oil dipstick. (See 3.2.3)
(5) Check and Re-supply Fresh Water
(For Fresh Water Cooling System)
Check the fresh water level before op-
eration while the engine is cold.
Checking the water level while the en-
gine is hot is dangerous, and the cool-
ing water reading will be misleading
due to thermal expansion.
Check and supply cooling water rou-
tinely at the coolant recovery tank
only.
Do not remove the filler cap of the
coolant tank during usual operation.
DANGER
Do not open the filler cap during op-
eration or immediately after stop-
ping the engine. Hot steam and
water will spout out. To remove the
cap, wait until the engine has
cooled down, wrap the cap with a
cloth and loosen the cap slowly. Af-
ter checking, replace the cap and
tighten firmly.
1. Check that the coolant level is above
the lower limit on the side of the cool-
ant recovery tank.
2. If the coolant level is close to the lower
limit, remove the filler cap and supply
fresh coolant.
3. When the water in the coolant recov-
ery tank runs out, remove the filler cap
of the fresh water cooler and supply
water until it overflows from the filler
port. (See 3.2.4)
NOTICE
If the coolant runs out too often, or
only the coolant in the fresh water
tank drops without any change in
the water level of the coolant recov-
ery tank, there may be some leak-
age of water or air. In such cases,
consult your Yanmar dealer or dis-
tributor without delay.
Note: The water rises in the coolant recov-
ery tank during engine operation. This is not
abnormal. After stopping the engine, the
cooling water cools down and the extra wa-
ter in the coolant recovery tank returns to
the coolant tank.
(6) Check the Remote Control Handle
Be sure to check that the remote con-
trol handle lever moves smoothly be-
fore use. If it is hard to operate,
lubricate the joints of the remote con-
trol cable and also the lever bearings.
If the lever comes out or there is play
in the lever, adjust the remote control
cable. (See 4.3.1 (5))
EN
29