Tension Pulley - Stiga - 387605008/0

This is a replacement tension pulley designed for use with Stiga mowing equipment. It is engineere...

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eBayGENUINE STIGA MOUNTFIELD CASTELGARDEN 387605008/0 TENSION PULLEY [GREY] new
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Blueperry agriculture (UK)Stiga Tension Pulley Pvc 3876050080
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Product Information

Full details

The Stiga Tension Pulley (MPN: 387605008/0) is an essential replacement component for Stiga mowing equipment owners looking to restore their mower deck performance. It is designed to maintain proper belt tension, ensuring smooth power transmission and preventing blade slip, though it requires specific mechanical knowledge for safe and correct installation.

All features

Model Part Number387605008/0
BrandStiga

Extended Product Information

FAQs

How do I know if I need a new tension pulley?

If you notice your belt is loose, frayed, or if the pulley shows visible damage or bearing noise when spun by hand, it is likely time for a replacement.

Is this part compatible with all Stiga mowers?

No, this is specific to models designated for part number 387605008/0. Always verify your specific mower model number before purchasing.

Can I replace just the pulley bearing?

Stiga generally recommends replacing the entire tension pulley assembly to ensure the structural integrity and alignment of the component are maintained.

Do I need special tools to change this?

You will typically need a socket set and potentially a tool to help release the tension spring, depending on your specific mower deck configuration.

Should I replace the belt at the same time?

It is highly recommended to replace the drive belt whenever replacing the tension pulley, as a worn belt can contribute to uneven pulley wear.

Troubleshooting

Belt slips frequently after installation

Verify that the belt is correctly routed through the guide pulleys and that the tension spring has not lost its elasticity.

Excessive noise during deck operation

Check that the pulley is mounted securely and that no foreign objects like sticks or stones are wedged in the assembly.

Pros and Cons

Pros

  • Ensures consistent blade rotation speed
  • Reduces risk of belt slippage
  • Restores factory performance levels
  • High-grade materials for long service life

Cons

  • Requires mechanical expertise to replace
  • Specific to select Stiga models only
  • Involves removing safety covers and tension springs

Setup, Compatibility & Care

To install this pulley, always ensure the engine is off, the spark plug wire is disconnected, and the mower deck is securely supported. You will need to release the tension on the existing belt before unscrewing the old pulley. When installing the new pulley, ensure the bolt is tightened to the recommended torque specifications to prevent the assembly from backing out during vibration. Regularly inspect the pulley bearing for smoothness; if the pulley spins with resistance or exhibits "play" when grabbed by hand, it is time for a replacement. Clean the area around the pulley periodically to prevent debris build-up from causing premature bearing failure.

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