The Wacker Neuson Decompression Valve is a genuine OEM component designed for the BTS series gasoline cut-off saws, including the BTS 930 L3, BTS 935 L3, BTS 1030 L3, BTS 1035 L3, BTS 1035, BTS 1140 L3, BTS 935, and BTS 13 models. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original component installed at the factory. It is a direct-fit replacement that installs in the same location and connects the same way as the part it replaces. If your cut-off saw is becoming increasingly difficult to pull-start or the engine requires excessive force to crank over, a faulty decompression valve is a common cause — part number restores correct engine starting behavior.
Key Features
- Genuine OEM Valve Integrity — Manufactured to Wacker Neuson's exact pressure-release specification, ensuring the valve opens and closes at the correct point in the engine cycle for consistent starting performance.
- Direct-Fit Replacement — Threads directly into the cylinder head in the same position as the original, requiring only standard hand tools for installation.
- Broad BTS Series Compatibility — Confirmed fit across the BTS 930 L3, BTS 935 L3, BTS 1030 L3, BTS 1035 L3, BTS 1035, BTS 1140 L3, BTS 935, and BTS 13 gasoline cut-off saws.
- Restores Easy Pull-Starting — A functioning decompression valve significantly reduces the compression load during starting, protecting the operator and the recoil starter assembly from excessive strain.
- Verified Part Number — Order with confidence using Wacker Neuson part number 5000104064 to confirm you are receiving the correct valve for your specific BTS model.
A decompression valve is a small engine component threaded into the cylinder head that temporarily vents compression during the pull-start sequence, making the engine significantly easier to crank over by hand. When the operator pulls the starter cord, the valve bleeds off a portion of the cylinder pressure, reducing the resistance felt on the cord. Once the engine fires and begins running, the valve closes automatically and plays no further role in normal operation. When the decompression valve fails — whether through wear, a stuck or broken internal pin, or debris fouling the seat — the engine reverts to full compression on every pull, making starting extremely difficult and putting heavy stress on the recoil starter. Replacing a worn valve promptly protects both the operator and the surrounding starter components.
Part Details
| Part Number | 5000104064 |
|---|---|
| Old Part Number | 0104064 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Decompression Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Power Cutter BTS 1035 L3 | BTS 1035 L3 | 5000008912, 5000008990, 5000610076, 5000610182 |
| Cut-Off Saws | BTS 1030 L3 | 5000008989, 5000610075 |
| Cut-Off Saws | BTS 930 L3 | 5000008987, 5000610073 |
| Cut-Off Saws | BTS 935 L3 | 5000008988, 5000610074 |
| Cut-off Saw with 1in Arbor | BTS 1035 | 5000007975 |
| BTS 1140L3 SAW | BTS 1140 L3 | 5000610063, 5000610078 |
| Cut-off Saw with 1in Arbor | BTS 935 | 5000008341 |
| Cut-off Saw with 1in Arbor | BTS 13 | 5000007338 |
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.
