Mercury 300 - PRO MAX 3.0L User Manual page 51

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Inspection And Maintenance Schedule
(Continued)
EVERY 50 HOURS OF USE (CONT.)
7. Check engine timing setup.
8. Check control cable adjustments.
9. Check alternator belt tension.
10. Check tightness of bolts, nuts, and other fasteners.
EVERY 100 HOURS OF USE OR ONCE YEARLY, WHICHEVER
OCCURS FIRST
1. Check power trim fluid.
2. Replace Water separating fuel filter.
3. Lubricate splines on the drive shaft and prop shaft. (If used in
salt water, more frequent service may be needed.)
4. Torque Master and Sport Master Gearcases – Lubricate entire
length of driveshaft with Mercury Precision anti-corrosion
grease. (92-802867A1) (If used in salt water, more frequent ser-
vice may be needed.)*
5. Inspect fiberglass reeds for chipping or cracks.*
6. Use Mercury Precision QuicKleen (92-802877A1) in fuel.
EVERY 300 HOURS OR USE OR THREE YEARS
1. Replace water pump impeller (more often if: overheating occurs,
used in salt water, or reduced water pressure is noted).
2. Replace cylinder head O-ring seals.
BEFORE PERIODS OF STORAGE
1. Refer to Storage procedure.
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These items should be serviced by an authorized dealer.
MAINTENANCE
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