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CH7
Maintenance
WARNING
Always disconnect battery cables from battery before working around electrical system components
to prevent injury to yourself or damage to electrical system.
IMPORTANT: Refer to MAINTENANCE CHART for complete listing of all scheduled maintenance to be
performed. Some listings can be done by owner/operator, while others should be performed by an
Authorized Mercury MerCruiser Dealer. Before attempting maintenance or repair procedures not
covered in this manual, it is recommended that a Mercury MerCruiser Service Manual be purchased and
read thoroughly.
NOTE: Maintenance points are color coded for ease of identification.
• Blue-Coolant
• Yellow-Engine Oil
• Orange-Fuel
• Brown-Transmission Fluid
Maintenance Aids
1 Transmission - Dexron III Automatic Transmission Fluid.
2 Crankcase Oil - Quicksilver 4-Cycle Marine Engine Oil. (Refer to Specifications for alternatives and oil
recommendations for varying ambient temperatures.)
3 Closed Cooling System Coolant - Extended Life 5/100 Ethylene Glycol Antifreeze/Coolant.
4 All Exterior Surfaces - Quicksilver Primer and Spray Paint and Quicksilver Corrosion Guard.
CH53
Fluid Capacities
Engine
NOTICE
Measurements: U.S. Quarts (Liters)
All capacities are approximate fluid measures.
Model 350 cid / 5.7 l 496 cid / 8.1 l
Crankcase Oil (With Filter)
1
5.5 (5.25) 9 (8.5)
Seawater Cooling System
2
15 (14.1) 19 (18)
Closed Cooling System 20 (19) 20 (19)
1
Always use dipstick to determine exact quantity of oil or fluid required.
2
Seawater Cooling System capacity information is for winterization use only.
IMPORTANT: It may be necessary to adjust oil levels depending on installation angle and cooling
systems (heat exchanger and fluid lines).
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