Engine Maintenance; Servicing The Air Cleaner - Toro 74310 Operator's Manual

4. Lubricate each end of both steering linkage rods with a
spray lubricant or a light oil.
Changing the Gearbox Oil
Service Interval: After the first 50 hours—Change the oil
in all 3 gearbox housings and add oil as
needed.
Every 100 hours—Change the oil in all 3 gearbox
housings and add oil as needed.
1. Place the machine on a level surface.
2. Shut off the engine, wait for all moving parts to stop,
remove the key, and engage the parking brake.
3. Remove the gearbox and drive-shaft assembly from the
mower deck. Retain the hardware for use later.
4. Remove the large oil drain plug on the front of each of
the 3 gearbox sections and drain the oil
Figure 29
1. Small magnetic plugs
(front and back)
2. Large oil drain/fill plug
5. Remove the small magnetic plugs and wipe away any
material accumulated on the plugs.
®
6. Apply a Teflon pipe sealant to all small magnetic plugs
and install them into the gearbox.
7. Install the gearbox and drive-shaft assembly to the
mower deck.
8. Fill the gearbox with Mobil
gear lube oil until level with oil drain/fill plug.
Note: Each of the gearbox sections must be filled
separately.
Note: Keep the mower deck level to the ground when
filling the gearbox with oil. Do not fill the gearbox with
the mower deck raised in the service position.
9. Apply a Teflon pipe sealant to the 3 large oil plugs and
install them into the gearbox.
(Figure 29).
3. Small magnetic plug (front
only)
® SHC (synthetic) 75W-90

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 250 hours—Replace the primary air filter (more
often in dusty or sandy conditions).
Every 250 hours—Check the safety air filter.
Every 500 hours—Replace the safety air filter.
Note: Check the filters more frequently if the operating
conditions are extremely dusty or sandy.
Removing the Filters
1. Disengage the blade-control switch (PTO), move the
motion-control levers to the N
and set the parking brake.
2. Shut off 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
1. Air-cleaner body
2. Primary filter
3. Latch
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 30).
Note: Avoid knocking the filter into the side of the
body.
32
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EUTRAL LOCK
(Figure
Figure 30
4. Air-cleaner cover
5. Safety filter
position,
30).