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37
General Air Cleaner
Maintenance
• Check the air cleaner body for damage which could
cause an air leak. Replace if damaged. Check the whole
intake system for leaks, damage or loose hose clamps.
• Service the air cleaner filter only when the service
indicator requires it. Changing the air filter before it is
necessary only increases the chance of dirt entering the
engine when the filter is removed
• Be sure the cover is seated correctly and seals with the
air cleaner body.
Servicing the Precleaner Bowl
Normally, inspect precleaner bowl daily. When conditions
are extremely dusty and dirty, inspect more frequently. Do
not let dust or debris build up above level marks on
precleaner bowl.
1. Remove thumb screw and separate cover from
precleaner bowl (Fig. 46).
2
1
3
Figure 46
1. Air cleaner indicator
2. Precleaner bowl
3. Dust cup
2. Empty precleaner bowl and wipe clean.
3. Assemble and install precleaner bowl, cover, and thumb
screw.
Note: When operating machine in extremely dusty
conditions, an optional extension tube (Toro Part No.
43-3810), which raises precleaner bowl above hood, thus,
lengthening the time between precleaner bowl servicing, is
available from your local authorized Toro Distributor.
Servicing the Air Cleaner
1. Release the latches and remove the cover from the air
cleaner body (Fig. 46). Before removing the filter, use
low pressure air (40 psi, clean and dry) to help remove
large accumulations of debris packed between outside
of primary filter and the canister. Avoid using high
pressure air which could force dirt through the filter
into the intake tract. This cleaning process prevents
debris from migrating into the intake when the primary
filter is removed.
1
Figure 47
1. Filter element
2. Remove and replace the primary filter (Fig. 47).
Cleaning of the used element is not recommended due
to the possibility of damage to the filter media. Inspect
the new filter for shipping damage, checking the sealing
end of the filter and the body. Do not use a damaged
element. Insert the new filter by applying pressure to
the outer rim of the element to seat it in the canister. Do
not apply pressure to the flexible center of the filter.
3. Clean the dirt ejection port located in the removable
cover. Remove the rubber outlet valve from the cover,
clean the cavity and replace the outlet valve.
4. Install the cover orienting the rubber outlet valve in a
downward position – between approximately 5:00 to
7:00 when viewed from the end.
5. Secure the cover latches.
6. Reset indicator (Fig. 46) if showing red.