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5756-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
To install the cutting blade
NOTICE: To re-install or replace the blade, make sure that all parts
are replaced in the exact order in which they are removed
(Fig. 26b).
1. If the flange is removed during blade removing, align it with
the motor shaft first and then assemble it into place.
2. While wearing protective gloves, position the blade on the
flange with the surface stating “THIS SIDE FACING GRASS”
facing toward outside (Fig. 27a).
3. Align the washer with the motor shaft and mount it onto the
motor shaft.
4. Mount the bolt into the motor shaft. Hand tighten the bolt
clockwise.
5. Move the blade by hand to align the two holes in the blade
with the two holes in the flange (Fig. 27a).
6. Place a metal rod with diameter a little less than 1/4 in (6.35
mm) (e.g., a bit) into the aligned hole in the blade and the
flange to act as a stabilizer. Place another screwdriver or metal
rod with diameter a little less than 5/16 in (8 mm) into the
fixing hole in the motor to act as a stabilizer (Fig. 27b).
7. Use a 9/16 in (14 mm) torque wrench to tighten the bolt
clockwise. The recommended torque for the blade bolt is 36-
41 ft-lb (50-55 Nm).
8. Repeat the steps with the second blade, if needed.
9. Reassemble the deck onto the mower as directed in
“REMOVING THE MOWER DECK” in this manual.
WARNING: Ensure that the blade is properly seated and the
blade bolt is tightened to the torque specifications above. Failure to properly attach the blade could cause it to come loose
and result in possible serious personal injury.
SHARPENING THE CUTTING BLADE
WARNING: Always protect your hands by wearing heavy gloves or wrapping the cutting edges with rags or other
materials when performing any maintenance on the mower blade. Always remove the safety key and battery packs when
servicing or transporting the mower.
WARNING: Always wear eye protection with side shields marked to comply with ANSI Z87.1. Failure to do so could
result in objects being thrown into your eyes resulting in possible serious injury.
WARNING: A worn, cracked, or damaged blade can break, and pieces of the damaged blade can become dangerous
projectiles. Thrown objects can cause serious injury. Inspect the blade regularly, and do not operate the mower with a
worn or damaged blade.
THIS SIDE FACING GRASS
27a
Aligned Holes
27b
Stabilizer 1
Stabilizer 2
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