Specifications

65
CD568
Changing Fluids
See MAINTENANCE CHART for lubricant change interval. Lubricant should be changed before placing boat in
storage. Power Trim or Power Steering fluids do not require changing.
Coolant in closed cooling system should be changed at specified intervals by your Authorized MerCruiser
Dealer.
CRANKCASE OIL AND FILTER
IMPORTANT: Change oil when engine is warm from operation. Warm oil flows more freely, carrying
away more impurities. Use only recommended motor oil (see SPECIFICATIONS).
1 Start engine and allow it to warm up to normal operating temperature.
2 Stop engine and allow some time for oil to drain into oil pan (approximately 5 minutes).
3 Remove oil dipstick and install crankcase oil pump.
NOTE: Oil dipstick may be located on either port or starboard side of engine depending on type of installation.
Location is similar in any case.
4 Pump oil out of crankcase into drain pan. When crankcase is empty, remove pump. Install oil dipstick.
5 Remove and discard oil filter and sealing ring (not visible in picture). Coat sealing ring on new filter with oil
and install filter. Hand tighten only, do not use a filter wrench.
IMPORTANT: When refilling engine with oil always use dipstick to determine how much oil is required.
6 Remove oil fill cap (port oil filler cap is shown on opposite page) and refill engine to proper level with new oil
(refer to “Specifications” for quantity and grade of oil). Use dipstick to determine exactly how much oil is required.
IMPORTANT: Keep oil level as near the high level mark as possible. Never operate an engine with oil
level below low level mark. DO NOT OVERFILL!
CD610
DRIVE UNIT OIL
7 Remove gear lube monitor from bracket. Empty content into suitable container. Install monitor on bracket.
8 Place drive unit in full trim limit UP/OUT position, remove OIL FILL/DRAIN SCREW and sealing washer.
9 Remove OIL VENT screw and sealing washer. Allow oil to drain completely.
IMPORTANT: If any water drained from OIL FILL/DRAIN hole, or if oil appears milky tan, drive unit is leak-
ing and should be checked immediately by your Authorized MerCruiser Dealer.
10Lower drive unit so propeller shaft is level. Fill drive unit, through OIL FILL/DRAIN hole, with specified gear
lube until an air-free stream of lubricant flows from OIL VENT hole.
IMPORTANT: Use only Quicksilver High Performance Gear Lube in drive unit.
11 Install OIL VENT screw and sealing washer.
12Continue to fill until gear lube appears in the gear lube monitor.
A Fill monitor to FULL mark. Lubricate O-ring on neck with sterndrive oil. Install cap; do not overtighten.
B Quickly install sealing washer and OIL FILL/DRAIN screw. Tighten securely.
13Recheck oil level after first use.
IMPORTANT: Oil level in gear lube monitor will rise and fall during drive operation; always check oil level
when drive is cool and engine is shut down.