Engine Maintenance; Servicing The Air Cleaner - Toro 03781 Operator's Manual

Engine Maintenance

Servicing the Air Cleaner

Service Interval: Every 400 hours
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
(Figure 48) requires it. Changing the air filter before it is
necessary only increases the chance of dirt entering the engine
when the filter is removed.
Figure 48
1. Air cleaner indicator
Important: Be sure the cover is seated correctly and
seals with the air cleaner body.
1. Pull the latch outward and rotate the air cleaner cover
counterclockwise (Figure 49).
Figure 49
1. Air cleaner indicator
2. Air cleaner latch
2. Remove the cover from the air cleaner body. 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.
3. Air cleaner cover
This cleaning process prevents debris from migrating
into the intake when the primary filter is removed.
3. Remove and replace the primary filter (Figure 50).
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.
1. Air cleaner primary filter
Important: Never attempt to clean the safety filter
(Figure 51). Replace the safety filter with a new
one after every three primary filter services.
1. Air cleaner safety filter
4. 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.
5. Install the cover orienting the rubber outlet valve in a
downward position—between approximately 5:00 to
7:00 when viewed from the end.
6. Reset the indicator (Figure 48) if it shows red.
41
Figure 50
Figure 51