Engine Maintenance; Servicing The Air Cleaner - Toro 74906 Operator's Manual
With 52in, 60in, or 72in turbo force side discharge mower
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- Operator's manual (68 pages)
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Engine Maintenance
WARNING
Contact with hot surfaces may cause personal
injury.
Keep hands, feet, face, clothing, and other body
parts away the muffler and other hot surfaces.
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-inlet cover off the air-cleaner body
4. Clean the air-inlet screen and cover.
5. Install the air-inlet cover and secure it with the latches
(Figure
46).
2
1
4
Figure 46
1. Air-inlet cover
2. Air-inlet screen
6. Release the latches on the air cleaner and pull the
air-cleaner cover off the air-cleaner body
7. Clean the inside of the air-cleaner cover with
compressed air.
(Figure
3
3. Air-cleaner body
4. Latch
(Figure
8. Gently slide the primary filter out of the air-cleaner
body
(Figure
Note: Avoid knocking the filter into the side of the
body.
9. 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.
5
1. Inner filter
2. Primary filter
46).
3. Air-cleaner cover
10. Inspect the primary filter for damage by looking into
the filter while shining a bright light on the outside of
the filter.
Note: Any 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.
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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.
47).
1. If installing new filters, check each filter for shipping
damage. Do not use a damaged filter.
34
47).
1
Figure 47
4. Latch
5. Air-cleaner body
4
3
2
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