Air Filter - Cub Cadet LT1040 Operator's Manual

Air Filter

The engine is equipped with a replaceable, high density
paper air cleaner element and an oiled, foam
precleaner. Always examine the air cleaner before
starting the engine. Check for a buildup of dirt and
debris around the air cleaner system. Keep this area
clean. Also check for loose or damaged components.
Replace all bent or damaged air cleaner components.
NOTE:
Starting the tractor with loose or damaged air
cleaner components could allow unfiltered air into the
engine causing premature wear and failure.
Precleaner
Wash and re-oil the foam precleaner every 25 hours of
operation if equipped, (more often under extremely
dusty or dirty conditions).
• Loosen the air cleaner cover knobs and remove the
cover.
• Remove the precleaner from the upper section of
the air cleaner cover.
• Wash the precleaner in warm water with detergent.
Rinse the precleaner thoroughly until all traces of
detergent are eliminated. Squeeze out excess
water (do not wring). Allow the precleaner to air dry.
• Saturate the precleaner with new engine oil.
Squeeze out all excess oil.
• Reinstall the precleaner into the upper section of
the air cleaner cover.
• Reinstall the cover and tighten the knobs securely.
Paper Element
The paper element should be replaced at least once a
season, or every 100 hours of operation. Replace
more frequently if the tractor is operated under
extremely dusty conditions. To replace the paper
element, proceed as follows:
• Loosen the air cleaner cover knobs and remove the
cover.
• Carefully remove the air cleaner element.
Do not wash the paper element or use
IMPORTANT:
pressurized air, as this will damage the element.
Examine the element and discard if dirt and/or damage
is present.
NOTE:
Handle new elements carefully; do not use if
the sealing surfaces are bent or damaged.
• If any loose dirt or debris fell on the air cleaner base
when the element was removed, carefully remove it
and wipe the base clean. Be careful that none of it
drops into the intake.
• Check the air cleaner base. Make sure it is not
damaged. Also check the air cleaner cover for
damage or improper fit. Replace all damaged air
cleaner components.
• Clean all air cleaner components of any
accumulated dirt or foreign material. Prevent any
dirt from entering the throat of carburetor.
• Install the replacement air cleaner element with the
pleated side out and seat the rubber seal onto the
edges of the air cleaner base. See Figure 11
• Reinstall the cover and tighten the knobs securely.
Spark Plug
Once a season, or every 100 hours of operation,
remove the spark plug(s), check condition, and reset
the gap or replace with a new plug(s) as necessary.
• Lift the tractor's hood and locate the spark plug wire
on the front, right area of the engine.
• Carefully pull the spark plug wire boot off of the
spark plug.
• Before removing the spark plug, clean the area
around the base of the plug to keep dirt and debris
out of the engine.
• Using a ratchet with a 5/8-inch spark plug socket,
remove the spark plug and check its condition.
• Replace the plug if worn, dirty or damaged. Reuse
only after resetting the gap as instructed.
NOTE:
Do not clean the spark plug using an abrasive
grit. Some grit could remain in the spark plug and enter
the engine causing extensive wear and damage.
• Check the gap using a feeler gauge and adjust, if
necessary, by carefully bending the ground
electrode. See Figure 12. Set the spark plug gap to
.76 mm (0.030 in.).
Feeler Gauge
Spark Plug
Ground Electrode
• Reinstall the spark plug into the cylinder head.
Torque the spark plug to 28/32 ft. lb. (38.0/43.4
N·m).
• Place the spark plug wire boot over the spark plug
and press until you feel it "click" in place.
21
Figure 12
Gap