Yard-Man YM90 Operator's Manual page 9

SECTION 3: ASSEMBLY INSTRUCTIONS
Cutting
Attachment
Shield
Shield Mount
Figure 7
Install the cutting attachment shield when using the unit
as a grass trimmer
WARNING: To avoid serious personal
injury, the cutting attachment shield MUST
be in place at all times while operating the
unit as a grass trimmer.
Install the cutting attachment shield on the shield mount by
inserting the three (3) screws into the shield mount. Tighten
securely with a flat blade screwdriver. See Figure 7.
Remove the Cutting Attachment & Install
the Cutting Blade
NOTE: To make cutting blade removal and installation easier,
place the unit on the ground or on a work bench.
Remove the Cutting Attachment Shield
See Remove and Install the Cutting Attachment Shield.
WARNING: The gear housing gets hot with
use. It can result in injury to the operator.
The housing remains hot for a short time
even after the unit is turned off. Do not
touch the gear housing until it has cooled.
Remove the Cutting Attachment
1. Align the shaft bushing hole with the locking rod slot
and insert the locking rod into the shaft bushing hole.
See Figure 8.
Shaft Bushing Hole
Locking Rod Slot
Locking Rod
Figure 8
(3) Screws
Gear Housing
Output Shaft
Output Shaft
Bushing
2. Hold the locking rod in place by grasping it next to
the boom of the unit. See Figure 9.
3. While holding the locking rod, remove the cutting
attachment by turning it clockwise off of the output shaft.
See Figure 10. Store the cutting attachment for future use.
NOTE: The blade retainer under the cutting attachment
will be used when installing the cutting blade.
Cutting Attachment
Locking Rod
Slot
Locking Rod
Install the Cutting Blade
WARNING: To avoid serious personal
injury, always wear gloves while handling or
installing the blade.
4. Place the cutting blade on the output shaft bushing.
See Figure 11.
Blade Retainer
Pilot Hole
Output Shaft
Bushing
Locking Rod
9
Figure 9
Figure 10
Nut
Cutting
Blade
Figure 11
Shield
Mount