Toro GrandStand 74574, Operator'S Manual

Page: 33 / 68

Engine Maintenance
Servicing the Air Cleaner
Service Interval: 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 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. Push down to release the retaining clamps on the air
cleaner, and pull the air-cleaner cover off the air-cleaner
body (
Figure 42 ).
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 42 ). 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 will appear as bright spots.
Note:
If the filter is damaged discard it.
g026970
Figure 42
1. Air cleaner clamps 3. Primary air filter
2. Air cleaner cover 4. Secondary air filter
Servicing the Primary Filter
1. Do not clean the paper filter, replace it ( Figure 42 ).
2. Inspect the element for tears, an oily film, or damage to
the rubber seal.
3. Replace the paper element if it is damaged.
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 42 ).
3. Carefully slide the primary filter over the secondary
filter (
Figure 42 ).
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 42 ).
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