2011 Arctic Cat 400 TRV ATV Service Manual, Page 10Get this manual
2Replace any drain that is cracked or shows any signs of hardening or deterioration Valve Adjuster Procedure
NOTE: The seat, storage compartment cover assembly, compartment box, air filterfilter housing, and left-sideright-side splash panels must be removed for this procedure
CAUTION
The drain to the right is the clean air section of the filter housingAny leak of this drain will allow dirt into the engine intake causing severe engine damage
3Wipe any accumulation of oil or gas from the filter housing and drains