Section 5 - Maintenance
90-8M0069751 eng APRIL 2012 Page 45
Task Interval Maintenance to Be Performed
Every 100 hours or
annually
(whichever occurs first)
• Change the engine oil and filter.
• Change the sterndrive gear lube.
• Torque the gimbal ring U‑bolt locknuts.
• Replace the fuel filters.
• Check the steering system and the remote control for loose, missing, or damaged parts.
Lubricate the cables and linkages.
• Inspect and lubricate the sterndrive U‑joint splines. Inspect the bellows, the exhaust tube, and
check the clamps.
• Lubricate the gimbal bearing and engine coupler (Lubricate the engine coupler every 50
hours if operated at idle for prolonged periods of time).
• Check the continuity circuit for loose or damaged connections. If equipped with
MerCathode®, test the unit output.
• Check the engine alignment.
• Torque the engine mounts.
• Check the electrical system for loose, damaged, or corroded terminals.
• On driveshaft extension models, lubricate the drive shaft U‑joints, transom end (tailstock)
bearings, and engine end (output) bearings.
• Inspect the condition and tension of the engine accessory drive belts.
• Inspect the cooling system and the exhaust system for damage or leaks. Check both systems
hose clamps for tightness.
• Disassemble and inspect the engine seawater pump and replace worn components.
• Clean the seawater section of the closed cooling system. Clean, inspect, and test the
pressure cap. Check the anodes and replace if 50% eroded.
• Replace the air filter.
Every 2 Years
• Replace the engine coolant.
Every 300 hours or 3
years
• Disassemble and inspect the Alpha drive seawater pump. Replace any worn components.
Every 500 hours or 5
years
• Clean the aftercooler core.
Every 700 hours or 3
years
• Replace the power assisted steering pump drive belt.
Every 1000 hours or 4
years
• Replace the engine timing belt.
Every 1000 hours or 5
years
• Clean the fuel tank.
Maintenance Log
Record all maintenance performed on your power package here. Be sure to save all work orders and receipts.
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