Every 100 Hours of Operation
Perform the following maintenance every
100 hours of operation.
• Changing the Lubricating Oil (SD20)
• Inspecting and Replacing the Anode
Changing the Lubricating Oil (SD20)
See Draining and Replacing Lubricating Oil
Inspecting and Replacing the Anode
To prevent corrosion of the Sail-Drive body
by sea or lake water, replace the anode
every 100 hours of operation, once every six
months or when it has reduced to half of the
original volume (size).
NOTICE: The anode of the Sail-Drive is only
calculated for the Sail-Drive. Changing the
material of the propeller may require
additional anodes to be installed on the sail-
drive.
SD20
while the boat
in the water
ANODE
19
64 2
0 - 0 244
1
(1)
(3)
(2)
(4)
(5)
019416-01X
Figure 15
1 – Safety Label
2 – Anode
3 – Anode
4 – Upper Gear Case
5 – Lower Gear Case
SD50/SD50–4T
(1)
(2)
0005463
Figure 16
1 – Lower Gear Case
2 – Anode
An anode is provided on the lower gear
case. To inspect and replace the anode on
the lower gear case, the vessel must be
removed from the water.
Note: An optional two-part anode is
available from Yanmar for the lower gear
case. This option may allow the anode in the
lower gear case to be changed without
removing the vessel from the water, or by an
underwater diver.
Optional Two-Part Anode Information
Part Number
Description
Qty.
196440-02660
anode
2
196440-02690
mounting
plate
2
196440-02700
flat head bolt
4
26453-080202
8 X 20 bolt
2
PERIODIC MAINTENANCE
48
SD Operation Manual
© 2009 Yanmar Marine International
