Yanmar 4LHA-HTP Operation Manual page 557

Chapter 7 Reduction and Reversing Gear
5. Disassembly
5.Disassembly
5-1 Disassembling the clutch and accessories.
(1) Remove the remote-control cable and the C.W. hose
of L.O. cooler.
{2)Dismount the clutch main body from the mounting
flange.
(3) Drain the lubricating oil
Drain the lubricating oil by loosening the plug at the
bottom of the clutch case. Also remove the dipstick
from the clutch case at the same time.
(4) Remove the drain plug and pull out the L.O.
(5) Remove the dipstick.
(6) Remove the fastening bolts of the output shaft
coupling.
Remove the clamp plate and O-ring.
O-ring
Remove the output shaft coupling.
7-1-21
4LHA Serik
Clamp plate