Yanmar 4JH4E - Page 160

4. Disassembly and reassembly
140
(2) Drain lube oil
1) Remove the pipe coupling bolt, which holds
the lube oil dipstick guide, and drain the lube
oil from the engine.
Note:
For easier draining, remove the oil filler cap
(yellow) at the top of the rocker arm cover.
When not removing a oil filler cap and
draining, negative pressure grows big in the
crankcase and it may cause the rubber of the
diaphragm cracked only for 3JH4E and
4JH4E.
2) Remove the drain plug on the lower part of
the case, and drain the lube oil from the
marine gearbox.
Note:
When using a lube oil supply / discharge
pump, place the intake hose in the dipstick
guide for the engine or in the oil hole on top of
the marine gear case.
Coolant tank
Fresh water pump
Drain cock
for seawate
r
Intercooler
Drain seawater from
seawater pump cover
Drain cocks for
fresh water
008792-00
J
Drain cock for
fresh water
Drain cock for
seawater
Fuel pum
p
Clutch cooler
008793-00
J
4JH4-HTE