Stiga Tension Pulley - 3876050190
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Product Information
Full details
The Stiga Tension Pulley (3876050190) is an essential maintenance component designed for owners of Stiga Park front mowers and compatible cutting decks. This genuine replacement part restores proper belt tension, ensuring the efficient power transfer required for consistent lawn cutting performance. While it is a direct fit for several Pro-series decks, users must verify their specific deck model and serial number to ensure exact compatibility before installation.
All features
| Model Part Number | 3876050190 |
|---|---|
| Brand | Stiga |
Extended Product Information
FAQs
Does this part come with the mounting hardware?
This is a replacement pulley assembly; please retain your original mounting hardware unless specified otherwise.
How often should I replace this pulley?
There is no set interval; replace it if you notice excessive play in the pulley, grinding noises, or if the bearing has seized.
Can I use this on a non-Stiga mower?
No, this part is specifically designed for Stiga Park and Combi cutting decks.
Why is my belt still slipping after replacing the pulley?
Check if your mower belt has also stretched or worn down; it is often best practice to replace the belt and pulley together.
Is this a genuine Stiga part?
Yes, this is an authentic Stiga replacement part (MPN 3876050190).
Troubleshooting
Belt slips after installation
Check that the new pulley is properly aligned and the belt is seated correctly in the groove.
Squealing noise during operation
Inspect the tension spring; if the spring is weak or stretched, the pulley cannot provide sufficient force, causing the belt to slip.
Pulley does not rotate freely
Verify that the mounting bolt is not overtightened, which can bind the bearing, or check for debris trapped between the pulley and the deck.
Pros and Cons
Pros
- Ensures consistent cutting power by maintaining belt tension
- Genuine OEM part ensures high durability and build quality
- Direct fit for specific Stiga Park and Combi decks
- Easy to integrate into standard deck maintenance routines
Cons
- Requires specific technical knowledge to install correctly
- Not compatible with all Stiga mower decks
- Requires removing the deck housing to access the pulley assembly
Setup, Compatibility & Care
To install this pulley, ensure the mower is parked on a flat surface and the engine is completely cool. After disconnecting the spark plug for safety, remove the belt cover to access the tensioning system. Use the appropriate wrench sizes to unbolt the old pulley and replace it with the 3876050190, ensuring that the bolt is tightened to the manufacturer's recommended torque specification.
Compatibility
This part is compatible with:
- Combi 100 Q Plus decks
- Combi Pro 110 Q Plus decks
- Combi Pro 125 Q Plus decks
Care
Keep the pulley area free of grass clippings and debris, as build-up can cause the pulley to seize or wear prematurely. Inspect the pulley bearing annually for play or grinding noises.