Toro Z Master Turbo Force 6000 Series 74960 Operator's Manual

Ensure the mower is on a flat surface, engage the parking brake, set the throttle to "Fast", and turn the ignition key to start the engine.
Check the PTO switch to ensure it is in the "On" position. If the blades still don’t engage, inspect the belt for wear or damage and replace if necessary.
Change the oil after the first 5 hours of use, then every 100 hours of operation or annually, whichever comes first. Always use the recommended oil type.
Regularly clean the underside of the mower deck to prevent grass build-up, check and sharpen blades, and inspect the belt for signs of wear.
Use the height-of-cut lever located near the operator's seat to adjust the deck to the desired cutting height. Ensure the blades are disengaged before making adjustments.
Check the fuel level, ensure the fuel valve is open, verify the spark plug connection, and inspect the air filter for blockages. If problems persist, consult the user manual or a professional technician.
Regularly maintain the engine and blades, avoid mowing wet grass, keep the tire pressure at the recommended level, and operate at the optimal throttle setting for your mowing conditions.
Common causes include dull blades, uneven tire pressure, a bent blade spindle, or improper deck leveling. Inspect and correct these as needed for even cuts.
Clean the mower thoroughly, change the oil, fill the fuel tank with stabilized fuel, remove the battery and store it in a dry place, and cover the mower to protect it from the elements.
Inspect the blades for damage or imbalance, check all belts for wear, and ensure that all fasteners are tightened properly. Replace any damaged or worn components.