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CD785
ENGINE COOLANT
1 Before starting engine, check coolant level in coolant recovery bottle. Coolant level must be between the
“MIN.” and “MAX” marks (on front of bottle). If level is low, remove fill cap from coolant recovery bottle and add
specified coolant as required. Refer to Specifications for proper coolant.
WARNING
Do not remove coolant tank cap when engine is hot. Coolant may discharge violently, causing severe
burns.
2 If coolant level in coolant recovery bottle was low:
• Inspect coolant recovery system for leaks.
• Inspect coolant tank cap gaskets for damage and replace if necessary.
• Also, the tank cap maintains pressure on the coolant tank. It may not be holding pressure properly. To have
cap tested, contact your Authorized Mercury MerCruiser Dealer.
CAUTION
If the coolant should get extremely low and the engine very hot, let the engine cool for approximately
15 minutes before adding coolant; then, with the engine running, add coolant slowly. Adding cold
coolant to a hot engine may crack the cylinder head or crankcase. Never use water alone.
3 Periodically, to ensure that coolant recovery system is functioning properly, you should allow engine to cool
and then slowly and carefully remove coolant tank cap. Coolant level must be to the bottom edge of the tank filler
neck. If coolant is low, add specified coolant as necessary to bring up to proper level. Refer to items 1 and 2
above.
CD620
POWER TRIM PUMP FLUID
Power trim pump fluid level must be checked with the drive unit in the full DOWN/IN position.
4 New trim pumps have a shipping “cap plug” in the reservoir fill neck. Ensure that this “cap plug” has been
removed. Remove and discard “cap plug” if present.
5 Remove reservoir cap and observe oil level. Level must be up to, but not over, the bottom edge of fill neck.
Add Quicksilver Power Trim and Steering Fluid, or use SAE 10W-30 or 10W-40 motor oil if available, as
necessary to bring oil to proper level. Replace reservoir cap.
A Reservoir Fill Neck
B Reservoir Cap
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