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Task Interval
Weekly
Every two months or 50
hours of operation
Scheduled Maintenance
NOTE: Only perform maintenance which applies to your particular power package.
Task Interval
After the initial 20‑hour
break‑in period
Every 100 hours or
annually
(whichever occurs first)
90-8M0113856
DECEMBER 2015
eng
•
Check the water inlets for debris or marine growth.
•
Check and clean the seawater strainer, if equipped.
•
Check the coolant level.
•
Inspect the sterndrive anodes and replace if eroded 50% or more.
•
Remove the propeller and lubricate the propeller shaft and torque the nut. (If operating only in
freshwater, you can extend the interval to every four months.)
•
If operating in saltwater, brackish water, or polluted water, apply Corrosion Guard to the
power package.
•
Check the battery connections and the fluid level.
•
Ensure that the gauges and the wiring connections are secure. Clean the gauges. (If
operating in saltwater, reduce this interval to every 25 hours or 30 days, whichever occurs
first.)
Change the engine oil and filter.
•
Touch‑up the paint on the power package.
•
Change the engine oil and filter.
•
Change the sterndrive gear lube.
•
If the condition of the spark plugs, spark plug wires, and the distributor cap and rotor was
satisfactory at the initial inspection (as listed in Every 300 hours or 3 years), inspect the
condition of these components. Replace as necessary.
•
On models with closed cooling, check the coolant level and antifreeze concentration for
adequate freeze protection. Correct if necessary. Refer to the Specifications section.
•
Tighten the connection of the gimbal ring to the steering shaft to specifications.
•
Replace the water‑separating fuel filter.
•
Check the steering system and the remote control for loose, missing, or damaged parts.
Lubricate the cables and the linkages.
•
Check the continuity circuit for loose or damaged connections. Test the MerCathode unit
output if equipped.
•
Clean the flame arrestor, IAC muffler, and the crankcase ventilation hoses. Inspect the PCV
valve, if equipped.
•
Inspect the condition and the tension of the belts.
•
Driveshaft extension models: Lubricate the driveshaft U‑joints, and tailstock input and output
bearings.
Maintenance to Be Performed
Maintenance to Be Performed
Section 4 - Maintenance
Page 45
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