Yanmar 3YM30 Service Manual page 101

4. Disassembly and reassembly
(9) Removing the heat exchanger (exhaust manifold, coolant tank unit)
Remove the heat exchanger and gasket packing from cylinder head.
(10)Removing the seawater pump
Loosen the nut on the spacer bolt and remove the
seawater pump.
(11)Removing the starting motor
Remove the starting motor from the flywheel housing.
(12)Removing the lube oil filter
Remove the lube oil filter from the cylinder block.
(Seawater pump)
Flywheel housing
Lube oil pressure
switch
Lube oil filter
81
Gear case cover
Spacer bolt
V-belt
Bracket
Seawater pump
Starting motor
Cylinder block