Cleaning The Cooling System; Servicing The Air Cleaner - Toro 74410 Operator's Manual

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.
Clean cooling fins and engine shrouds every 300 hours or
yearly, which ever comes first.
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.
m–1854
2
m–1855
2. Balancer
28
3. Remove air intake screen, cylinder covers and fan
housing.
4. Clean debris and grass from parts.
5. Reinstall air intake screen, cylinder covers and fan
housing.
1
4
Figure 29
1. Air intake screen
2. Fan housing

Servicing the Air Cleaner

Foam Element: Clean and re-oil after every 25 operating
hours.
Paper Element: Clean after every 100 operating hours.
Replace after every 300 operating hours or
yearly. Which ever comes first.
Note: Service the air cleaner more frequently (every few
hours) if operating conditions are extremely dusty or sandy.
Removing the Foam and Paper Elements
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. Clean around the air cleaner to prevent dirt from getting
into the engine and causing damage. Unlatch two side
latches and remove the air cleaner cover (Fig. 30).
2
3
m–4295
3. Cylinder cover
4. Cylinder cover