MTD Yard Machines LT31CS Operator's Manual page 9

Remove the Cutting Head
WARNING: The gear housing gets hot with use
and can result in injury to the operator. When the
unit is turned off it remains hot for a short time.
Do not touch the gear housing until it has cooled.
1. Align the shaft bushing hole with the locking rod slot
and insert the locking rod into the shaft bushing
hole, Figure 8.
Shaft Bushing Hole
Locking Rod Slot
Locking Rod
FIGURE 8
2. Hold the locking rod in place by grasping it next to
the boom of the unit, Figure 9.
FIGURE 9
3. While holding the locking rod, remove the cutting
head by turning it clockwise off of the output shaft,
Figure 10. Store the cutting head for future use.
NOTE: The blade retainer under the cutting head will
be used when installing the cutting blade.
Install the Cutting Blade
WARNING: To avoid serious personal injury,
always wear gloves while handling or installing
the blade.
Output
Locking Rod
Shaft
4. Place the cutting blade on the output shaft bushing,
5. Make sure that the cutting blade is centered on the
Output Shaft
Bushing
Pilot Hole
Locking Rod
9
Cutting Head
Locking
Rod Slot
FIGURE 10
Figure 11.
pilot step and sitting flat against the output shaft
bushing, Figure 12.
WARNING: If the cutting blade is off-centre,
the unit will vibrate, and the blade may fly off,
which can cause serious personal injury.
Blade Retainer
Output Shaft
Bushing
FIGURE 11
Pilot Step
FIGURE 12
Nut
Cutting
Blade
Guard
Mount