Description
Overview:
The Walbro Primer Pump Bulb (MPN W188-11, also referenced as 188-11-1) is a genuine replacement bulb used to prime fuel systems on small petrol engines fitted with Walbro or Zama carburettors. The bulb is made from a durable, fuel‐resistant polymer that withstands regular pressing and exposure to petrol. With a 19 mm base diameter (3/4 in), it fits common primer bases found on many garden and light construction machines. Pressing the bulb draws fuel through the carburettor to remove air, helping engines start more easily and run smoothly after servicing or storage. Suitable for equipment such as lawnmowers, chainsaws, brushcutters, hedge trimmers, leaf blowers, water pumps, and compact generators where a carburettor primer is required. Genuine Walbro part for reliable performance.
Key Features:
- Genuine Walbro part for assured fit and function
- 19 mm base diameter (3/4 in) suits many standard primer housings
- Compatible with a wide range of Walbro and Zama carburettors
- Fuel‐resistant polymer construction for long service life
- Helps purge air and deliver fuel for easier cold starts
- Flexible bulb gives positive feedback and quick priming
- Supports smoother running after refuelling or filter changes
- Simple push-fit design for straightforward installation
- Ideal replacement for worn, cracked, or hardened bulbs
- Suitable for common garden and light construction machinery
Typical Applications:
Used on small two‐stroke and four‐stroke petrol engines to prime the carburettor before starting. Common on chainsaws, brushcutters/strimmers, hedge trimmers, leaf blowers, lawnmowers, tillers, cut‐off saws, compact pumps, and portable generators. Helpful during routine servicing, after fuel line or filter replacement, or when equipment has been stored and the fuel system is dry.
Also known as:
Primer bulb, fuel primer bulb, purge bulb, fuel purge bulb, carburettor primer, carb bulb, primer pump, fuel primer pump, carb primer bulb.
Product Specifications
| L&S Part No. | 188-11-1 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Walbro |
| OEM No. | W188-11 |
| Unit of Sale | 1 |
| Size | 22mm base |
| Machine Type | Engines |
| Key Features | - 19 mm base diameter fits standard primer housings - Compatible with Walbro and Zama carburettors - Fuel-resistant polymer ensures long service life - Helps purge air for easier cold starts - Suitable for garden and light construction machinery |
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