Gravely 996122 Owner's/Operator's Manual page 32

A dirty filter element should always be replaced with a new
element. Improper cleaning procedures can get dust on the
inside of the filter causing dirt ingestion and engine
problems. The air filter warranty expires upon cleaning
or servicing a used filter in any manner. Gravely does
not warranty a dust ingested engine problem if a used
air filter element has been cleaned or serviced in any
manner.
Improper Installation
Improper installation occurs when dust leaks past the seals.
The filter element must be aligned within the canister and
properly seated on both ends to prevent dirt from entering
the engine.
Damaged Air Filtering System
A damaged air filtering system often occurs from
mishandling the filter element and driving the vehicle in
areas that could damage the canister.
Banging and/or bumping the filter element against a solid
object such as a tire or blowing the element with air can
damage the seals and/or force dust and dirt particles
through the filter media creating a hole for dirt to pass
through to the engine.
Driving the vehicle carelessly over rough terrain, jutting
sticks, heavy brush and severe rocks can damage the air
cleaner canister. Periodically inspect the air cleaner canister
for external damage and replace if necessary.
Incorrect Air Filter Element
The air filter must remain intact to block passage of dirt and
foreign particles. It must be of sufficient size and
construction to withstand stresses, caused by rapid cycling
of air volume demanded by the engine, without cracking or
tearing under fatigue and pressure. Its filter elements must
have the correct media composition, filter area, micron size
and dimensions to properly filter the air of dirt while at the
same time passing sufficient air to the engine.
Gravely and the engine manufacturers have carefully
selected a reliable filter designed to fit the needs of the
Treker engines. Always specify a Gravely filter part number
T839-323C.
Always use genuine Gravely filters. Not using original
equipment replacement parts is an alteration and will
not be considered for warranty in the event of a dust
ingested engine problem.
CVT Snorkel Filter Maintenance
Refer to Figure 27:
Located under the seat on the passenger side are the
engine air intake snorkel and CVT air intake snorkel. Inside
the CVT snorkel is a filter element that should be inspected
at every oil change.
1. Check filter element (#2) by removing it from CVT air
intake snorkel (#1) and inspecting it for dirt and
damage.
2. If dirty, wash filter element in warm soapy water. Rinse
and let dry before reinstalling.
3. Replace with a new filter element if torn or cut.
4. Check all fittings and clamps periodically for tightness.
Inspect hose for holes or cracks.
Exhaust System
Prevent exhaust fires. Clean exhaust system daily while cold
of all dirt and trash. Check exhaust system often for
cleanliness especially while traveling over areas that
produce high amounts of airborne combustible materials.
Check spark arrester to make sure it is clean and in good
working condition.
Spark Arrester
Refer to Figure 28:
DANGER: The spark arrester does not stop
all fire emitting sparks from escaping the
muffler. Use extreme caution when driving
through dry grass, brush and other fire
hazard materials. Never stop or park vehicle
over combustible materials.
WARNING: The muffler is very hot and will
burn upon contact. Allow time to cool before
servicing the spark arrester.
CAUTION: To maintain efficiency, the spark
arrester must be serviced every 100 hours.
Be careful not to damage spark arrester
screen when cleaning.
GB-32
CVT Cover
Engine
Air Filter
Engine Air
Intake Snorkel
CVT Air
Intake Snorkel
Figure 27
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