Gravely 996122 Owner's/Operator's Manual page 31

1. Replace filter element with Gravely filter element No.
T839-323C every 300 hours or every year, (whichever
comes first). Service more frequently when used in
dusty conditions.
2. Release retaining clips (#5) to remove canister access
cover (#4) and filter element (#3). Clean canister (#2)
with a damp cloth.
3. Before installing new filter element, inspect it by
placing a bright light inside and rotate element slowly,
looking for any holes and tears in the paper. Also
check gaskets for cuts or tears. Do not attempt to use a
damaged element. A damaged element will allow
abrasive particles to enter the engine.
4. Install new filter element (#3) with open end first.
5. Reinstall canister access cover (#4). Make sure it seals
all around canister body (#2) before tighten retaining
clips (#5).
6. Check rubber burp cap (#6). Clean if plugged.
7. Check all fittings and clamps periodically for tightness.
Inspect hoses for holes or cracks.
8. Periodically check engine intake hose (#1) for signs of
ingested dust. Locate and repair source of ingested
dirt.
9. Never operate vehicle without a filter element (#3).
Figure 25
Insert Open End First
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Air Intake
Snorkel
Access Cover
Air Cleaner
Canister
Location - Under Hinged Seat
Engine Air Filter Handling
Refer to Figure 25 and Figure 26:
A specially designed dry filter is standard equipment on the
Treker and supplies clean combustion air to the engine.
Prevent costly and non-warrantable premature engine
damage by maintaining the vehicle air filter properly. Many
engine problems are due to improper handling of the air
filter. Dust and dirt that gets pass the air filter will damage
engine cylinder, piston and bearings in a few hours.
Prevent costly and non-warrantable premature engine
problems by avoiding the following common mishandling:
• Over servicing
• Improper installation
• Damaged air filtering system
• Incorrect air filter element
Over Servicing
Over servicing occurs when an air filter element is inspected
and/or replaced too often. Dust and dirt can fall off the filter
element onto the canister where it can be sucked into the
intake system. Only a few grams of dirt getting into an
engine during each filter inspection can prematurely produce
dust ingested engine problems.
A partially dirty air filter element is not harmful to the engine.
The air filter element should be changed before it becomes
too dirty and restricts air flow to the engine hindering its
performance. Replace air filter element immediately should
this happen. Engines that do not get proper amounts of air
will draw in excessive amounts of gas causing premature
engine problems.
The frequency of needing to change the air filter is largely
determined by driving conditions. Dusty conditions will
require more frequent servicing.
Retaining Clip
Figure 26
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