Description
Overview:
This Genuine Husqvarna primer (530 04 77-21) is a clear, fuel‐resistant elastomer bulb that primes the carburettor on two‐stroke petrol leaf blowers. By purging air and drawing fresh fuel through the lines and metering circuits, it helps the engine start smoothly and keeps idle stable. Designed for Husqvarna handheld blowers including the 125B and 125BVX, it restores correct priming performance and reduces pull‐cord effort, especially in cold weather or after storage. Built for regular use with mixed petrol, the bulb resists hardening and cracking, supporting long service life. As a Genuine Part, it matches the original fit and function on compatible machines, making replacement straightforward for routine maintenance or when the old bulb becomes stiff or damaged.
Key Features:
- Genuine Husqvarna OEM part for assured compatibility and fit
- Efficiently primes the fuel system to aid quick, reliable starts
- Helps reduce effort during cold starts and after the machine has run dry
- Clear bulb allows an easy visual check of fuel movement and bulb condition
- Fuel‐resistant elastomer construction for durability with petrol/oil mix
- Maintains flexibility to minimise cracking and leaks over time
- Direct replacement for the original primer on listed models
- Suitable for frequent use in domestic and professional settings
Typical Applications:
Used to restore proper fuel priming on Husqvarna handheld blowers when starting from cold, after storage, after running out of fuel, or following fuel line or carburettor service. Ideal for routine maintenance to keep starting dependable across seasons for gardening, grounds care, and site clean‐up work.
Also known as:
Primer bulb, fuel primer bulb, carburettor primer, purge bulb, fuel pump bulb, carb primer bulb for two‐stroke engines.
Fits Models:
125B, 125BVX, 125BX, 125BXs, 125Bs
Alternate Part Numbers:
530 04 77-21, 530047721
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