Toro 74504TE, Operator'S Manual, Page: 31 / 64

Engine Maintenance
Servicing the Air Cleaner
Service Interval: Every 300 hours
Every 250 hours—Replace the primary air filter.
Every 250 hours—Check the secondary air filter.
Every 500 hours—Replace the secondary air filter.
Note:
Service the air cleaner more frequently if operating
conditions are extremely dusty or sandy.
Removing the Filters
1. Disengage the PTO, move the motion-control levers to
the N
EUTRAL
-
LOCK
position, and set the parking brake.
2. Shut off the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Push down to release the retaining clamps on the air
cleaner and pull the air-cleaner cover off the air-cleaner
body (
Figure 34 ).
4. Clean the inside of the air-cleaner cover with
compressed air.
5. Gently slide the primary filter out of the air-cleaner
body (
Figure 34 ).
Note:
Avoid knocking the filter into the side of the
body.
6. Remove the secondary filter only if you intend to
replace it.
Important:
Never attempt to clean the secondary
filter. If the secondary filter is dirty, then the
primary filter is damaged and you should replace
both filters.
7. Inspect the primary filter for damage by looking into
the filter while shining a bright light on the outside of
the filter.
Note:
Holes in the filter appear as bright spots.
Note:
Discard the filter if it is damaged.
g026970
Figure 34
1. Air-cleaner clamps 3. Primary air filter
2. Air-cleaner cover 4. Secondary air filter
Servicing the Primary Filter
1. Inspect the element for tears, an oily film, or damage to
the rubber seal.
2. Replace the paper element if it is damaged.
Note:
Do not clean the paper element.
Servicing the Secondary Filter
Do not clean the secondary filter, replace it.
Important:
Do not attempt to clean the secondary filter.
If the secondary filter is dirty, then the primary filter is
damaged and you should replace both filters.
Installing the Filters
Important:
To prevent engine damage, always operate
the engine with both air filters and the cover installed.
1. If installing new filters, check each filter for shipping
damage.
Note:
Do not use a damaged filter.
2. If the secondary filter is being replaced, carefully slide
it into the filter body (
Figure 34 ).
3. Carefully slide the primary filter over the secondary
filter (
Figure 34 ).
4. Ensure that it is fully seated by pushing on the outer
rim of the filter while installing it.
Important:
Do not press on the soft inside area
of the filter.
5. Install the air-cleaner cover with the breather cap down,
and rotate so that the retaining clamps lock the cover
in place (
Figure 34 ).
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