PERIODIC MAINTENANCE
SD25 Operation Manual 31
12/05
WHEN THE VESSEL IS OUT
OF THE WATER, PERFORM
THE FOLLOWING:
Removing Deposits from the
Lower Gear Case
Remove seaweed, seashells and other
marine growth from the lower gear case.
Completely remove deposits around the
cooling water intake (2, Figure 1) since the
engine may overheat if the cooling water
intake amount is insufficient.
Repairing Damaged Coating
The lower gear case coating may be
damaged when hit by objects in the water,
or when having deposits removed from it.
Never use paint containing copper or tin.
This will damage the drive and void the
warranty. Use a high quality primer and
topcoat paint specifically designed for
aluminum outboards or stern-drives.
Follow the manufacturer’s directions for
surface preparation and application.
Contact your authorized Yanmar Marine
dealer or distributor for assistance.
Inspecting the Anode
See Inspecting and replacing the anode on
page 33.
Inspecting the Folding Propeller
Confirm that the blade of the folding
propeller opens smoothly. Inspect for wear
on the blade-fixing pins, replacing them
when wear is excessive. Apply
seawaterproof grease to the pins in the
blade gear and propeller shaft.
Draining Water
Drain the engine cooling water, together
with the water in the Sail-Drive case. If this
water is not drained, freezing may cause
the engine block and/or the Sail-Drive case
to crack.
1 – Lower gear case
2 – Seawater inlet
Figure 1
SD25_OPM.book 31 ページ ２０１４年６月２７日 金曜日 午後５時２９分
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