Toro Rear-engine riding mower Parts — Browse All Models

What to do when the mower deck vibrates on your Toro rear-engine riding mower

If your mower vibrates when you engage the cutting blades, the issue could be in the blade drive system. Vibration may be caused by:

• An unbalanced or bent blade
• A worn pulley or mandrel
• A stretched or damaged blade belt
• Debris lodged in the pulleys
• Loose fasteners on the blades, pulleys or mandrels

Remove the mower deck and inspect each part. Tighten any loose bolts and check components for wear. Replace damaged parts as needed using compatible mower blades or drive parts.

Common Toro rear-engine riding mower parts

• Air filter: Keeps abrasive debris out of the engine’s cylinders to prevent damage and oil contamination. Learn how to replace the air filter.
• Alternator: Located under the flywheel, the alternator generates power and keeps the battery charged while the engine is running.
• Flywheel key: Aligns the flywheel with the crankshaft. If the blade hits something hard, the key shears to prevent more costly damage. Here’s how to replace the flywheel key.
• Blade belt: Transfers power from the engine to spin the mower blades.
• Spark plug: Delivers the electric current needed to ignite the fuel-air mix in the engine. If the engine misfires or won’t start, it may be time to replace the spark plug.

Get help with Toro mower repairs

Need more guidance for your Toro mower? Visit our DIY riding mower and lawn tractor repair page for step-by-step instructions, troubleshooting tips and videos to walk you through the most common mower repairs.