Walker H27i - Limited Warranty Information; Warranty Coverage and Exclusions; Obtaining Warranty Service; Warranty Limitations

75
Maintenance Instructions ADJUSTMENTS
Clutch Spring Assembly
(Spring Uncompressed)
Knuckle Joint
*NOTE: Factory preset dimensions. Reset to
these dimensions prior to adjustment if compo
nents have been disassembled.
21/8 in.*
(54 mm)
6 in.*
(152 mm)
61/4 in.*
(159 mm)
Clutch Actuator
Link
PTO Clutch Disengaged
Clutch Disengagement/Brake Action
WARNING
It is important to check and maintain
blade brake action for safe operation of
the machine.
The declutched or disengaged position of the
blade clutch idler pulley is adjustable and is set to
give belt release without excessive slack and to
apply the blade brake. The blade brake is activated
by the brake band connected to the clutch engage
ment arm. The brake is designed to stop the blades
within ve (5) seconds after disengaging the clutch.
Use the following procedures to check and adjust
clutch disengagement and brake action:
Step 1 - Idler Pulley Maximum Travel Adjustment
Loosen the brake band adjustment nut allowing
clutch pivot stop arm and stop bolt to make contact
(refer to Blade Brake Band Adjustment illustra
tion).
1. To check the pulley travel, rst engage the
clutch, then measure the distance the pulley
travels as the clutch is disengaged and the stop
arm contacts the stop bolt.
2. Adjust the pivot stop bolt to give 15/8 in. to
13/4 in. (41 mm to 44 mm) pulley travel from
“clutch engaged” to “clutch disengaged”.
NOTE: This adjustment will prevent excessive
pulley travel that can cause belts to develop too
much slack, causing possible belt derailment
upon disengagement.
CLUTCH DISENGAGED
CLUTCH ENGAGED
Idler Pulley
15/8 in. to 13/4 in.
(41 mm to 44 mm)
Clutch Pivot
Stop Arm
Clutch Pivot
Stop Bolt
Brake Engagement
Arm
Clutch Idler Pulley Travel