Bennche Bighorn 400 Owner's Manual page 128

CAUTION:
Do not twist the sponge material when
squeezing it.
8. Inspect the sponge material and replace
it if damaged.
9. Thoroughly apply foam air filter oil or
other quality liquid foam air filter oil (not
spray type) to the sponge material.
NOTE:
The sponge material should be wet but not
dripping.
10. Pull the sponge material over its frame.
11. Install the air filter element.
12. Install the air filter case cover and be
sure the crankcase breather hose is
connected.
Periodic Maintenance and Adjustment
1. Crankcase breather hose
13. Install the engine cover.
14. Install the seats.
NOTE:
The air filter element should be cleaned
every 20-40 hours. It should be cleaned and
lubricated more often if the vehicle is
8-28