HD Switch Front Caster Wheel Axle Bolt and Lock Nut for Toro fits Z Master 2000 3000 5000 6000 Series Zero Turn Lawn Mower 13x6.50-6

What It Is

This is a replacement axle bolt and lock nut set for the front caster wheel assembly on Toro Z Master zero-turn mowers (2000, 3000, 5000, 6000 series) that use a 13x6.50-6 tire. It secures the wheel to the caster fork and allows free rotation.

Fitment & Compatibility

Before buying, confirm your mower is a Toro Z Master 2000, 3000, 5000, or 6000 series with a 13x6.50-6 front tire. Check that the axle bolt diameter is 1/2 inch and length is approximately 4.75 inches (measure your old bolt to be sure). This is an aftermarket part, not OEM Toro, so verify it matches your specific model number (e.g., 74156, 74260, 74360). Also inspect your caster fork for wear—if the fork hole is elongated, the new bolt won’t fix wobble.

Key Things to Know

• Quality: The bolt is zinc-plated steel; the lock nut is nylon-insert. Should hold up under normal mower use, but may not match OEM hardness for heavy commercial abuse.
• Installation: Easy—remove the old bolt and nut, slide the new bolt through the caster fork and wheel hub, and torque the lock nut to 35-40 ft-lbs. Use a thread locker (Loctite Blue) if the bolt tends to loosen.
• Common Gotcha: The lock nut is single-use. If you ever remove it, replace with a new one. Also, the bolt head is 5/8-inch hex—make sure you have that wrench or socket.
• Compatibility Trap: Some newer Z Master models use a metric bolt or a different shoulder length. Always measure your old bolt’s shoulder (unthreaded portion) to ensure the new one seats properly in the wheel bearing.

Should You Buy It

If you own a Toro Z Master with a worn or broken front caster axle bolt and want a quick, budget-friendly fix, this is a solid pick. It’s not for commercial operations needing OEM-grade durability, but for residential or light commercial use, it’ll get you mowing again without the dealer markup.