Description
Overview:
This Genuine Husqvarna impulse pipe is a small, shaped hose that carries crankcase pressure pulses to the carburettor on compatible chainsaws, helping the fuel pump in the carb to work correctly. Made from a durable, oil- and fuel‐resistant elastomer, it withstands petrol/oil mix, vibration and heat for dependable service life. A sound impulse line restores consistent starting, smooth idling and clean acceleration. Designed for Husqvarna two‐stroke chainsaws including the 36 and 55, it matches the original routing and connectors for a precise fit. If your saw is hard to tune, surges at idle, or struggles under load, a perished or leaking impulse pipe is a common cause. This genuine part provides the correct specification and fit to keep your saw running reliably.
Key Features:
- Genuine Husqvarna part for correct fit and performance
- Fuel- and oil-resistant elastomer construction for long service life
- Maintains a strong, steady pulse signal to the carburettor
- Helps cure hard starting, poor idle and hesitation under throttle
- Precisely formed to suit the original hose path and connectors
- Compatible with a wide range of mid-size Husqvarna saws
- Simple, non-specialist replacement during routine servicing
- Resists kinking, cracking and hardening from heat and vibration
- Suitable for both homeowner and professional use
- Cross-references to Husqvarna 505 31 07-51 for easy identification
Typical Applications:
Replacement of a damaged, cracked or hardened impulse line during carburettor service, air leak diagnosis, or full engine refresh. Ideal when addressing tuning issues, erratic idle, stalling on acceleration, or fuel delivery problems caused by a weak or leaking pulse signal in Husqvarna chainsaws used for felling, logging, landscaping and general maintenance work.
Also known as:
Impulse tube, pulse line, vacuum line, carburettor pulse hose, crankcase impulse hose, carb pulse pipe, engine vacuum hose for chainsaw fuel pump.
Fits Models:
240, 240F, 240R, 245, 245 R, 245R, 245RX, 36, 40, 41, 45, 49, 51, 55, 55 Rancher
Alternate Part Numbers:
505 31 07-51, 505310751
Product Specifications
| L&S Part No. | 505 31 07 51 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 505310751 |
| Unit of Sale | 1 |
| Applications | 240, 240F, 240R, 245, 245 R, 245R, 245RX, 36, 40, 41, 45, 49, 51, 55, 55 Rancher |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 36 | 40 | 41 | 45 | 49 | 51 | 55 | 55 RANCHER | 240 | 240F | 240R | 245 | 245R | 245RX |
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