Primer Bulbs

Primer bulbs and caps draw fuel into the carburettor so a chainsaw, trimmer or brushcutter starts easily, including after sitting idle or in cold weather. This range covers primer bulbs and caps for Walbro, Zama and TK-1 carburettors, fitting engines from Stihl, Echo, Kawasaki, McCulloch, Homelite, Ryobi and Poulan equipment, sold as single units or in packs of 5 and 10.

Replace your primer bulb if it's cracked, stiff, doesn't spring back after pressing, or if you notice fuel leaking around it. Match the bulb to your carburettor type (Walbro, Zama or TK-1) and model to make sure it seals and draws fuel correctly.

Frequently asked questions

When should I replace a primer bulb?

Replace it if it's cracked, stiff, doesn't return to shape after pressing, or if fuel is leaking around it, as these are signs it's no longer sealing or drawing fuel properly.

How do I choose the right primer bulb?

Match it to your carburettor type, such as Walbro, Zama or TK-1, and check it suits your specific chainsaw, trimmer or brushcutter model.

What does a primer bulb actually do?

Pressing it draws fuel from the tank into the carburettor and clears air from the line, which makes the engine easier to start.

Can I buy primer bulbs in bulk?

Yes, this range includes single bulbs as well as packs of 5 and 10 for those servicing multiple machines.