Breather Filter; Recoil Housing - Polaris SPORTSMAN 400 2003 Service Manual

MAINTENANCE
3. Reinstall drain plug.
Ill.1
NOTE: The sediment tube will require more frequent
service if the vehicle is operated in wet conditions or
at high throttle openings for extended periods.

BREATHER FILTER

INSPECTION
Four cycle ATV engines are equipped with a breather
filter. The in-line filter is similar in appearance to a fuel
filter, and is visible on the left side (Location A).
In-line breather filters should be installed with the
arrow pointing toward the engine (away from the air
box).
Typical Breather Filter Location
In-Line Breather Filter
Location A
NOTE: In-line breather filter service life is extended
when the foam air box pre-filter is in place and
maintained properly. Never operate the engine
without the pre-filter.
2.20
Sediment Tube
BREATHER HOSE
1. Be sure breather line is routed properly and
secured in place. CAUTION: Make sure lines are
not kinked or pinched.

RECOIL HOUSING

Crankcase Drain
Recoil Drain
S Drain the housing periodically to remove
moisture.
S Drain the recoil housing after operating
the ATV in very wet conditions.
should also be done before storing the
ATV. The drain screw is located at the
bottom of the recoil housing. Remove the
screw with a 10 mm wrench. Reinstall
screw once housing has been drained.
S CAUTION: Make sure the manual start
handle is fully seated on the recoil
housing, especially when travelling in wet
areas. If it is not sealed properly, water
may enter the recoil housing and damage
components.
S
Water will enter the recoil housing if the
starter handle is disengaged from the rope
guide when under water.
S
After travelling in wet areas the recoil
housing and starter should always be
drained completely by removing the
recoil.
S
Do not open the crankcase drain unless
the engine has ingested water. Some
engine oil will be lost if crankcase drain is
opened.
S If recoil handle seal has been damaged,
the handle shopuld be replaced.
This