79
Maintenance Instructions
ADJUSTMENTS
Blade Clutch (PTO)
Clutch Engagement/Belt Tension
The clutch engagement and PTO belt tension are
adjusted using the clutch actuator rod. After install
ing a new PTO belt,
after 10 hours and every 100
hours
thereafter, check and adjust for the clutch
spring assembly bolt head clearance dimension as
shown in the
PTO Clutch Engaged
illustration. If
the clutch actuator rod or clutch spring assembly
have been disassembled, first reset them to their
factory preset lengths (see
PTO Clutch Disen-
gaged
illustration) and then proceed with adjust
ment as follows.
With the clutch engaged, adjust the length of the
clutch actuator rod to achieve a clutch spring
assembly bolt head clearance of 1/4 in. to 5/16 in.
(6.5 mm to 8 mm). To adjust the clutch actuator rod
length, loosen both ball joint jam nuts (one ball joint
will have LH threads) and
shorten
the rod to
increase
the clutch spring assembly bolt head
clearance, or
lengthen
the rod to
decrease
the bolt
head clearance. If adjustments are needed more
frequently than every 100 hours to maintain
dimensions, it may suggest problems with pulley
wear or belt misalignment.
PTO Clutch Engaged
Blade Clutch
Engaged
Bolt Head Clearance
1/4 in. to 5/16 in.
(6.5 mm to 8 mm)
Clutch
Actuator Arm
Clutch Spring Assembly
(Spring Compressed)
Clutch Idler
Arm
Front of Mower
Blade Clutch
Idler Pulley
Safety
Switch
Clutch
Actuator Rod
