Section 5 - Maintenance
Page 54 90-865253073 DECEMBER 2007
Maintenance Schedule—Tow Sport Models
Routine Maintenance
NOTE: Only perform maintenance that applies to your particular power package.
Task Interval Maintenance to Be Performed
Each day start
• Check the engine oil level. You can extend this interval based on experience
with the product.
• Check the transmission fluid level.
Each day end
• If operating in saltwater, brackish water, or polluted water, flush the seawater
section of the cooling system after each use.
Weekly
• Check the water inlets for debris or marine growth.
• Check and clean the seawater strainer, if equipped.
• Check the coolant level.
• Check the transmission fluid.
Every two months or 50
hours
• 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.
Scheduled Maintenance
NOTE: Only perform maintenance that applies to your particular power package.
Task Interval Maintenance to Be Performed
After the initial 20‑hour
break‑in period
Change the engine oil and filter.
• Change the engine oil and filter.
• Change the transmission fluid and filter. ZF Marine requires changing the
transmission fluid and filter maintain warranty.
Every 100 hours or
annually
(whichever occurs first)
• Touch up the paint on the power package.
• Change the engine oil and filter.
• Change the transmission fluid and filter (ZF Transmission Models).
• 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.
• Replace the water‑separating fuel filter element.
• Clean the flame arrestor, IAC muffler, and the crankcase ventilation hoses.
Inspect the PCV valve, if equipped. To replace the IAC, contact your
authorized Mercury MerCruiser dealer.
• Inspect the condition and the tension of the belts.
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