Mercury Jet 20 Manual page 70

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Inspection And Maintenance Schedule (Continued)
EVERY 100 HOURS OF USE OR ONCE YEARLY, WHICHEVER
OCCURS FIRST
5.
Lubricate splines on the drive shaft.
6.
Electric start models – Inspect battery. (page 62)
7.
Remote control models – Check control cable adjustments.
8.
Remove engine deposits with Quicksilver or Mercury Precision Power Tune
Engine Cleaner.
9.
Clean fuel tank pick up filter.
10. Salt water use - remove and grease the jet drive mounting hardware, and
reassemble.
11. Check tightness of bolts, nuts, and other fasteners.
EVERY 300 HOURS OF USE OR THREE YEARS
1.
Replace water pump impeller (more often if overheating occurs or reduced
water pressure is noted).
BEFORE PERIODS OF STORAGE
1.
Refer to Storage procedure. (page 79)
These items should be serviced by an authorized dealer.
MAINTENANCE
68

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