Bennche Bighorn 400 Owner's Manual page 127

8-27 Periodic Maintenance and Adjustment
1. Air filter element
1. Air filter frame 2. Sponge material
3. Element retaining plate
6. Wash the sponge material gently but
thoroughly in solvent.
WARNING
POTENTIAL HAZARD
Using low flash point solvents or
gasoline to clean the sponge material.
WHAT CAN HAPPEN
Low flash point solvents or gasoline can
catch fire or explode.
HOW TO AVOID THE HAZARD
Use parts cleaning solvent to clean the
sponge material.
7. Squeeze the excess solvent out of the
sponge material and let it dry.