Got E15?
If you are not currently purchasing E15 gasoline, you might be in the very near future.  Currently over 700 gas stations in the United States are selling E15. E15 is not recommended for use in outdoor power equipment.

Walbro continues to bring to market new and innovative fuel system solutions to combat the effects of increasing levels of ethanol in today’s pump gasoline.  With the successful introduction of Walbro’s spiral diaphragm assembly, the fuel system component left most susceptible to damage due to ethanol containing fuel is the air purge bulb.

Walbro is pleased to introduce both an air purge bulb (188-566-1) and air purge assembly (188-570-1) containing a proprietary air purge bulb which has been tested in multiple fuels – including up to E25 (25% ethanol).

188-566-1 can replace Walbro part number 188-12-1.

188-570-1 can replace Walbro part number 188-512-1.

Below are photos showing the effect E25 ethanol containing fuel has on older models (clear bulb) and 188-566-1 (black bulb).

Why wait for problems to occur with your outdoor power equipment due to rapidly increasing levels of ethanol in pump gasoline?  Replace your air purge bulb with Walbro’s newest ethanol complaint purge bulbs.