Product Manual

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Note: It is quicker to perform the disengaged spring length and brake stud clearance
inspections if done simultaneously.
Disengaged Spring Length:
This inspection must be performed to make sure that there is proper braking force to prevent the
blades from spinning when the clutch is in the disengaged position. With the clutch in the
disengaged position measure the spring length. The spring must be between 3-1/4” and 4” to
provide the appropriate braking force. If the spring length is over 4” it will be necessary to adjust
the brake stud closer to the belt. If the spring length is less than 3-1/4” it will be necessary to
adjust the brake stud further away from the belt. To make brake stud adjustments loosen the bolt
on the top of the brake stud and slide the brake stud in the slot. When the proper disengaged
spring length is achieved, tighten the bolt on the top of the brake stud. For this procedure do not
adjust the spring length. The spring length should only be changed when adjusting the belt
tension.
Brake Stud Clearance:
This inspection is necessary to prevent over-braking. To inspect the brake stud clearence it is
easiest to remove the left belt sheild and observe from the left side. With the clutch engaged,
check to make sure that there is at least 1/2” of clearance between the brake stud and the belt. If
the clearance is less than 1/2” then it will be necessary to adjust the brake stud away from the
belt. Keep in mind that the disengaged spring length must stay between 3-1/4” and 4”.
CAUTION: If brake stud is not set in correct position, under-braking or over-braking may
occur. If over-braking occurs, premature belt failure or a possible fire could occur due to
excessive friction and overheating.
H. MOWER BLADE REMOVAL, BALANCING & INSTALLATION
CAUTION: Sharp blades can cause bodily injury if not handled properly.
When removing the blade, it is recommended that a block of wood be placed between the blade
and the underside of the mower deck. This will allow the removal of the blade without the need to
hold the blade by hand.
CAUTION: Always balance the mower blades each time they are sharpened.
Out of balance mower blades cause excess vibrations which lead to premature bearing failures,
bolts coming loose, and overall deterioration of the wing mowers.
CAUTION: Always properly tighten the blade bolts to the specified torque. Failure to do so
can lead to unwanted loosening of the blade and damage to the blade holding saddle.
The Models H60B & H40B use the Kunz Engineering Part # (202134) blade bolt. This particular
hex head bolt is a 3/8” – 24NF x 7/8” long, grade 5 and it’s proper torque is 35 ft-lbs. The Model
C60V uses the Kunz Engineering Part # (202136) blade bolt. This particular hex head bolt is a
1/2” – 20NF x 1.00” long, grade 5 and it’s proper torque is 85 ft-lbs.