Description
Overview:
This Air Purge (primer) unit is a genuine Husqvarna part for keeping your fuel system free of air so your machine starts easily and runs smoothly. It is a compact purge bulb assembly with a clear, fuel‐resistant elastomer bulb mounted in a durable black polymer housing. When pressed, it draws fuel through the carburettor and expels trapped air back to the tank, helping to prevent hard starting and hesitation. Designed for Husqvarna disc cutters and chainsaws, it is an ideal replacement for worn or cracked bulbs on models such as the K760 and K770, and is also used on the K970 range. Built for regular professional use, it supports reliable starting, stable idle and consistent throttle response.
Key Features:
- Genuine Husqvarna OEM part for assured fit and performance
- Promotes quick, reliable starting by purging air from the fuel circuit
- Helps maintain smooth idle and throttle pick‐up for better cutting performance
- Durable, fuel‐resistant bulb and robust housing for long service life
- Supplied as a complete purge bulb assembly for straightforward replacement
- Correct hose connection layout for the listed Husqvarna machines
- Simple, tool‐light installation to minimise downtime on site
- Suitable preventative maintenance item to restore primer function
- Stable operation in varied weather and work conditions
- MPN: 540054901
Typical Applications:
Used on Husqvarna disc cutters and chainsaws in construction, rail work, rescue, forestry and landscaping. Ideal after refuelling, filter changes or storage to re‐prime the fuel system, reduce pull‐start effort and improve cold starting. Helps maintain efficiency on frequent stop/start jobs.
Also known as:
Primer bulb, fuel primer, purge bulb, air purge bulb, priming bulb, fuel purge pump, carburettor primer.
Fits Models:
560XP Mark II, 560XPG Mark II, 562XP Mark II, 562XPG Mark II, 592 XP, 592XP, K1270 II, K1270 Rail II, K1270II, K1270RailII, K760, K760 Cut-n-Break, K760 Cut-n-Break II, K760 II, K760 Rescue, K760Cut-n-Break, K760Cut-n-BreakII, K760II, K760Rescue, K770, K770 Dry Cut, K770 OilGuard, K770 Rescue, K770 VAC, K770DryCut, K770OilGuard, K770Rescue, K770VAC, K970, K970 Chain III, K970 III, K970 Rescue III, K970 Ring III, K970ChainIII, K970III, K970RescueIII, K970RingIII
Alternate Part Numbers:
540 05 49-01, 540054901
Product Specifications
| L&S Part No. | 540 05 49 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 540054901 |
| Unit of Sale | 1 |
| Applications | 560XP Mark II, 560XPG Mark II, 562XP Mark II, 562XPG Mark II, 592 XP, 592XP, K1270 II, K1270 Rail II, K1270II, K1270RailII, K760, K760 Cut-n-Break, K760 Cut-n-Break II, K760 II, K760 Rescue, K760Cut-n-Break, K760Cut-n-BreakII, K760II, K760Rescue, K770, K770 Dry Cut, K770 OilGuard, K770 Rescue, K770 VAC, K770DryCut, K770OilGuard, K770Rescue, K770VAC, K970, K970 Chain III, K970 III, K970 Rescue III, K970 Ring III, K970ChainIII, K970III, K970RescueIII, K970RingIII |
| Machine Type | Disc Cutters |
| Fits Brands | Husqvarna |
| Fits Models | K770 | K760 Cut-n-Break | K760 RESCUE | 592 XP | 560XPG Mark II | 560XP Mark II | 562XPG Mark II | 562XP Mark II | K970 Chain III | K970 Chain III (2 Bolt) | K1270 II | K1270 II Smartguard | K1270 Rail II | K760 Cut-n-Break II | K760 II | K770 Dry Cut | K770 OilGuard | K770 Rescue | K770 SmartGuard | K770 VAC | K970 Rescue III | K970 Ring III | K970 SmartGuard | K970 III |
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