The Husqvarna 505861801 Kit Pump Idler Arm X750 is a genuine OEM assembly designed for the X750 early entry saw. As a factory-original component, this kit delivers an exact match to the original idler arm configuration — ensuring correct belt tension and proper alignment right out of the box. DHS Equipment supplies this part to help keep your X750 running at full capacity on the job. Cross-reference part number 505861801 against your parts diagram to confirm this is the correct assembly for your machine before ordering.
Key Features
- Genuine OEM Construction — Manufactured to Husqvarna's original design tolerances, this idler arm assembly maintains the precise geometry needed to keep the pump drive belt tracking and tensioned correctly.
- Complete Kit Assembly — Supplied as a matched kit with all associated components, simplifying the replacement process and ensuring every part works together as intended.
- Direct Fit for the X750 — Engineered specifically for the X750 early entry saw, this assembly mounts to the original attachment points without modification.
- Sustained Belt Tension — A correctly functioning idler arm holds consistent tension across the pump drive belt, supporting smooth, uninterrupted power transfer to the pump system during cutting operations.
- Protects Downstream Components — A worn or failed idler arm allows belt slippage that can accelerate wear on belts, pulleys, and the pump itself — replacing this assembly at first sign of wear protects the broader drive system.
The idler arm assembly maintains tension on the drive belt that transfers power to the water pump on the X750 early entry saw. Without consistent tension, the belt can slip or derail, disrupting water flow to the blade and compromising the saw's ability to cut green concrete cleanly and safely. When the idler arm wears, bends, or loses its spring tension, belt alignment degrades — leading to accelerated belt wear, reduced pump output, and potential overheating of the cutting system. Replacing this kit restores proper belt engagement and protects the full drive train.
Part Details
| Part Number | 505861801 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Kit Pump Idler Arm X750 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Early Entry Saw | X750 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
