Yamaha VF175LA v5 Owner's Manual

The recommended oil type for the Yamaha VF175LA is Yamalube 4M 10W-30 or 20W-40, which are designed specifically for Yamaha marine engines.
Regular maintenance should be performed every 100 hours of operation or at least once a year, whichever comes first.
To flush the engine, connect a garden hose to the flushing device, start the engine, and let water flow for about 10-15 minutes. Ensure the engine is in neutral and monitor water flow to prevent overheating.
Check the battery connections for corrosion, ensure the fuel is fresh and the fuel line is not kinked, and verify that the kill switch is in the correct position.
Overheating can be caused by a blocked water intake, a malfunctioning thermostat, or a faulty impeller. Regular maintenance can help prevent these issues.
To winterize, stabilize the fuel, fog the engine, drain water from the cooling system, and store the engine in an upright position. Properly covering the engine is also recommended.
Excessive vibration can be caused by a damaged propeller, loose engine mounts, or misalignment. Inspect these areas and replace or tighten components as necessary.
Maintain a steady speed, ensure proper engine tuning, and keep the hull clean to minimize drag. Regular maintenance also helps in optimizing fuel efficiency.
Signs include overheating, reduced water flow from the cooling system, and unusual noises. Regularly check the impeller during maintenance intervals.
Yes, but it is recommended to use ethanol-blended fuel with no more than 10% ethanol (E10) to avoid potential damage to the fuel system components.