Primer Bulb Replacement for Chainsaws, Weed Eaters, Blowers, Polesaws, and other small engines

Replacing the primer bulb in small engines is quite simple and takes very little time.

Small engines are plagued by new fuel chemistries — especially since the introduction of ethanol to gasoline. Rubber parts such as primer bulbs and fuel lines dry out and deteriorate very rapidly as the hydrophilic ethanol sucks moisture and resilience out of these engine parts.

One of the first casualties in small engines caused by this is the carburetor’s primer bulb. When this component dries out and cracks, it is no longer possible to draw fuel into the passages of the carburetor. Starting engines affected by this is nearly impossible.  The fuel primer bulb replacement must take place

Replacing the primer bulb is very simple, and may be all that is needed to get your 2-cycle or 4-cycle equipment back up and running again. Watch this video for an easy demonstration of replacing this vital part of the fuel system.

So next time your primer bulb needs replacing, save yourself some money by doing it yourself since you see that the primer bulb replacement for small engines is really quite easy.

This procedure applies to Stihl models BG75 BR320 FC75 FS40 FS56 FS80 FS85 HL75 HS80 HT75 KM85 SR320 SR340 SR400 SR420