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Mercury 25 Jet 4-Stroke - Page 73

Mercury 25 Jet 4-Stroke
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MAINTENANCE
67
Check the steering system for binding or loose components.
Visually check the steering link rod fasteners for proper
tightness. See Steering Link Rod Fasteners.
Make sure the driveshaft bearing on the jet drive is lubricated.
See Lubrication Points.
AFTER EACH USE AND AFTER EVERY 10 HOURS OF
OPERATION
Lubricate the driveshaft bearing on the jet drive. See
Lubrication Points.
AFTER EACH USE
If operating in salt water, wash off all salt deposits and flush
out the exhaust outlet on the jet drive with fresh water.
EVERY 100 HOURS OF USE OR ONCE YEARLY,
WHICHEVER OCCURS FIRST
Lubricate all lubrication points. Lubricate more frequently
when used in salt water. See Lubrication Points.
Change the engine oil and replace the oil filter. The oil should
be changed more often when the engine is operated under
adverse conditions such as extended trolling. See Changing
Engine Oil.
Replace the spark plugs at first 100 hours or first year. After
that, inspect the spark plugs every 100 hours or once yearly.
Replace the spark plugs as needed. See Spark Plug
Inspection and Replacement.
Inspect the thermostat visually for corrosion and/or a broken
spring. Make sure the thermostat closes completely at room
temperature.
1.
Check the engine low pressure fuel filter for contaminants.
See Fuel System.
Replace the high pressure fuel filter.
1.
Check the engine timing setup.
1.
Check the corrosion control anodes. Check more frequently
when used in salt water. See Corrosion Control Anodes.
Lubricate the splines on the driveshaft.
1.
1. These items should be serviced by an authorized dealer.

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