Regular maintenance of your outboard motor ensures safe boating and extends the motor’s life. Follow these steps to keep your motor in top condition. How to Maintain an Outboard Motor
Part 1: Cleaning and Maintaining the Motor After Outings
1. Flush the Engine After Each Outing
- Attach a garden hose to flushing earmuffs or the motor’s built-in flushing mount.
- Turn on the water and start the engine (keep it out of gear). This flushes out debris and salt.
2. Check the Water Pump Flow
- Ensure a steady water stream exits the motor. The water should feel warm, not hot.
- If the stream is weak, turn off the engine and clear debris from the flow tube using a wire.
3. Burn Off Remaining Fuel
- Disconnect the fuel line and run the engine until the carburetor burns out remaining fuel.
- This prevents fuel from gumming up the system during storage.
4. Inspect for Leaks
- Remove the engine cowling and check for water or fuel leaks. Address any issues promptly.
5. Lubricate Moving Parts
- Spray mechanical components and cables with anti-corrosion lubricants like WD-40.
- Focus on pivots, throttle cables, and the shift mechanism.
6. Cover and Store the Motor
- Reattach the cowling and clean it. Cover the motor with a canvas or plastic cover for protection. How to Maintain an Outboard Motor
Part 2: Performing Regular Maintenance
1. Replace Spark Plugs and Wires
- Replace plugs when the engine performance declines or fuel consumption increases.
- Use a spark tester to check functionality. Replace plug wires along with the plugs for reliability.
- Ensure wires are reconnected in the correct order.
2. Monitor for Water in the Fuel
- Check fuel tanks regularly for water contamination.
- Avoid ethanol-blended fuels when possible, as ethanol can corrode seals and hoses.
3. Inspect Fuel Lines and Fittings
- Look for leaks or corrosion in the fuel line. Replace damaged components immediately.
4. Replace the Water Pump Impeller
- Replace every two years (annually for saltwater use).
- Steps to Replace the Impeller:
- Remove the impeller housing cover.
- Extract the old impeller with pliers, clean the housing, and install a new impeller.
- Reattach the cover plate securely.
5. Use Fresh Fuel
- Drain old fuel at the end of the boating season to prevent impurities.
- Dispose of old fuel at a recycling center.
Additional Tips for Motor Longevity
- Regular Oil Changes: Change engine oil and gear oil per the manufacturer’s recommendations.
- Check the Battery: Ensure battery terminals are clean and corrosion-free.
- Follow the Manual: Consult your motor’s user manual for specific maintenance intervals and procedures.
With consistent care and proper storage, your outboard motor will remain efficient and reliable for years of boating adventures.
