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Service Adjustments
48ZS
Spindle Brake Inspection and Replacement
Blade and pulley brake inspections should be
performed every 50 blade on and off cycles.
9. Disengage the blade handle and inspect the brake
contact surface. All of the brake pad contacting material
should be contacting the bottom of the pulley.
Note: Springs may vary from those pictured based on the
particular application.
Before beginning service, park the mower on a level
surface, turn the blades off, turn the engine off, set the
brake, take the key out of the switch, wait an adequate
time to make certain no blades are turning, and remove
spark plug wires from spark plugs.
1. Engage the blade handle (make certain the engine
cannot start) to pull the brakes off of the pulleys.
2. Remove the pulley guard from the deck.
3. Visually inspect the brake pads for wear. Make
certain that no metal is touching the pulleys.
Removingthe Blades
Required tools: 18mmWrench
I CAUTION
CAUTION!Beware of thecutting edgesonthe blades.
The rotationof one blade maycause the other blade(s)to
rotate. Always wear work gloveswhen handlingblades.
1. Park the mower on level ground, set the brake and block
the rear wheels to prevent accidental rollback.
2. Raise the front end of the mower and place on a jack
stand.
3. Use one wrench to loosen nutAwhile carefully holding
the blade.
.
The brake pad material should be approximately 1/8-
inch thick. Replace the brakes if the material is less
than 1/16-inch thick.
Note: Replacing both brakes is recommended if
replacement of one brake is required.
5. To replace the brake, use a pair of pliers to remove
the springs.
6. Remove the two mounting bolts and
disconnect the spring from the cable.
7. Discard all of these parts. DO NOT reuse springs.
New brakes are equipped with new springs for
proper braking.
8. Install the new brakes by reversing the procedure in
steps5 and 6.
.
5.
To reinstall, insert the bolt with lock washer and large
flat washer into the spindle.
IMPORTANT: The number of spacers should always be
the same on each blade bolt. NEVER put the spacers
below the blade and NEVER straighten or weld the
blades.
Rev:May2011 STANLEY 48" ZS 21
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