67
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.
Clutch Actuator
Link
6-1/2 in.*
(165.1 mm)
2-1/8 in.*
(53.98 mm)
6 in.*
(152.4 mm)
PTO Clutch Disengaged
Clutch Disengagement/Brake Action
WARNING
It is important to check and maintain blade
brake action for safe operation of the ma-
chine.
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 engagement
arm. The brake is designed to stop the blades within
five (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 stop
arm and stop bolt to make contact (refer to Blade
Brake Band Adjustment illustration).
1. To check the pulley travel, first 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 in. to 1-1/8 in.
(25 mm to 29 mm) pulley travel from “clutch en-
gaged” 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
Brake Engagement
Arm
1 in. to 1-1/8 in.
(25 mm to 29 mm)
Clutch Pivot
Stop Arm
Clutch Pivot
Stop Bolt
Clutch Idler Pulley Travel
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