Engine Maintenance; Servicing The Air Cleaner - Toro 74583 Operator's Manual

Engine Maintenance

Servicing the Air Cleaner

Service Interval: Every 150 hours
Every 300 hours/Yearly (whichever
comes first)—Replace the primary air
filter. (more often in dusty or sandy
conditions)
Every 300 hours—Check the inner
air filter.
Every 600 hours—Replace the inner
air filter.
Note: Check the filters more frequently if the operating
conditions are extremely dusty or sandy.
Removing the Filters
1. Disengage the PTO, move the motion control levers
to the neutral locked position, and set the parking
brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Release the latches on the air cleaner and pull the air
cleaner cover off the air cleaner body (Figure 39).
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 39).
Note: Avoid knocking the filter into the side of the
body.
6. Remove the inner filter only if you intend to replace
it.
Important: Never attempt to clean the inner
filter. If the safety filter is dirty, then the primary
filter is damaged. Replace both filters.
1. Air cleaner body
2. Primary filter
3. Latch
7. Inspect the primary filter for damage by looking into
the filter while shining a bright light on the outside
of the filter. Holes in the filter will appear as bright
spots. If the filter is damaged, discard it.
Servicing the Primary Filter
• If the primary filter is dirty, bent, or damaged,
replace it.
• Do not clean the primary filter.
Servicing the Safety Filter
Replace the safety filter, never clean it.
Important: Never attempt to clean the safety filter.
If the safety filter is dirty, then the primary filter is
damaged. Replace both filters.
Installing the Filters
Important: To prevent engine damage, always
operate the engine with both air filters and cover
installed.
1. If installing new filters, check each filter for shipping
damage. Do not use a damaged filter.
2. If the safety filter is being replaced, carefully slide it
into the filter body (Figure 39).
3. Carefully slide the primary filter over the safety filter
(Figure 39).
Note: Ensure that the primary filter is fully seated
by pushing on its outer rim while installing it.
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Figure 39
4. Air cleaner cover
5. Inner filter