Cleaning The Cooling System; Servicing The Air Cleaner - Toro 74413 Operator's Manual

1. Use a file to sharpen the cutting edge at both ends of the
blade at the original angle (Fig. 27).
1
Figure 27
1. Sharpen at original angle
Note: The blade retains its balance if the same amount
of material is removed from both cutting edges.
2. Check the balance of the blade by putting it on a blade
balancer (Fig. 28). If the blade stays in a horizontal
position, the blade is balanced and can be used. If the
blade is not balanced, file some metal off the end of the
sail area only (Fig. 26). Repeat this procedure until the
blade is balanced.
1
Figure 28
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft (Fig. 26).
Important
The curved part of the blade must be
pointing upward toward the inside of the mower to ensure
proper cutting.
2. Install the flat washer, lock washer, and blade bolt
(Fig. 26).
Note: Torque the blade bolt to 85–110 ft-lb
(115–150 N m).

Cleaning the Cooling System

Clean the air intake screen from grass and debris before
each use.
Check and clean the cooling fins and the engine shrouds
every 100 hours or yearly, which ever comes first.
1. Disengage the PTO 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.
m–1854
2
m–1855
2. Balancer
28
3. Remove the air intake screen, recoil starter, and fan
housing (Fig. 29).
3
1
Figure 29
1. Air intake screen
2. Fan housing
3. Recoil starter
4. Clean the debris and grass from the engine parts.
5. Install the air intake screen, recoil starter, and fan
housing.

Servicing the Air Cleaner

Service Interval/Specification
Foam element: Clean it after every 25 operating hours.
Paper element: Clean it after every 50 operating hours.
Replace it after every 200 operating hours
or yearly, which ever comes first.
Note: Service the air cleaner more frequently (every few
operating hours) if the operating conditions are extremely
dusty or sandy.
Important
Do not oil the foam or paper element.
Removing the Foam and Paper Elements
1. Disengage the PTO 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.
5
2
4
m-7450
4. Bolt
5. Nut