YAMAHA 100-HOUR OUTBOARD SERVICE

Replace engine oil and oil filter using Yamaha-specification products, helping maintain proper lubrication and protect internal engine components. 

 Drain and replace lower unit gear lubricant and inspect the used lubricant for signs of water intrusion or abnormal wear. 

Inspect fuel-system components for visible signs of leaks, deterioration, damage, or other conditions that could affect reliable engine operation.

Inspect and service applicable engine-mounted fuel filters and the external fuel-water separator as required based on condition and Yamaha maintenance recommendations. 

Remove and inspect spark plugs for condition and wear, and replace them when required by the applicable Yamaha maintenance schedule or condition.

Inspect the propeller, lower unit, and applicable external anodes for visible damage, fishing line, fluid leakage, corrosion, or other conditions that could affect performance or reliability. 

Lubricate applicable grease points and inspect the power trim-and-tilt system for proper operation, condition, and visible signs of leakage. 

Inspect the cooling-water pilot indicator and water inlets for proper flow, blockage, damage, or other conditions that could affect cooling-system operation. 

 Check engine starting and idle condition, battery condition, engine stop switch, wiring, gauges, and applicable throttle and shift linkages for proper operation and visible signs of damage or deterioration.

Perform a Yamaha Diagnostic System (YDIS) check after scheduled maintenance to review available engine information and identify stored or active diagnostic information that may require further attention. The customer receives a YDIS report documenting the diagnostic results.