Toro Z Master 48-inch 72904 Operator's Manual
![Toro Z Master 48-inch 72904 Mower manual cover](/images/RcnVwJJblLLBqJKMUTUjbcEF/thumbs/thumb175x175.webp)
Routine maintenance includes checking and changing the oil, cleaning or replacing the air filter, sharpening the blades, and inspecting the belts and tires. Refer to the owner's manual for specific intervals and detailed instructions.
Ensure the battery is charged, the fuel tank is filled, and the spark plug is functioning. Check the safety switches and ensure the mower blades are not engaged. If the problem persists, consult a professional technician.
To adjust the cutting height, use the lever located near the operator's seat. Move the lever to the desired position, which corresponds to the cutting height indicated on the mower deck.
Use SAE 10W-30 motor oil for general operation. If the mower operates in temperatures consistently above 80°F (27°C), consider using SAE 30 oil. Check the engine manual for specific recommendations.
Uneven cutting can be caused by dull blades, incorrect tire pressure, or a misaligned deck. Ensure the blades are sharp and balanced, check the tire pressure, and adjust the deck level if necessary.
After each use, remove grass clippings from the deck with a brush or compressed air. For a thorough cleaning, use a garden hose and mild detergent, but avoid getting water into the engine or electrical components.
Replace the air filter every 100 hours of operation or annually, whichever comes first. In dusty conditions, check and clean the filter more frequently.
Before storing for winter, clean the mower, drain the fuel system, change the oil, and remove the battery. Store the mower in a dry, protected area. Consider using a fuel stabilizer if fuel remains in the tank.
To replace the blades, first disconnect the spark plug and lift the mower to access the deck. Remove the blade bolts, replace the blades, and ensure they are securely fastened. Refer to the manual for torque specifications.
Excessive vibration can be caused by unbalanced or damaged blades, loose bolts, or debris lodged in the mower deck. Inspect the blades for damage, ensure all bolts are tight, and clear any debris from the deck.