Cutting Knife Inspection And Replacement - Ventrac MY560 Operator's Manual

Optional Hydraulic Flip Up Procedure
1. Park the power unit and mower on a smooth, level
surface.
2. Engage the parking brake, shut off the engine, and
remove the ignition key.
3. Place the left and right height adjustment handles
into position number one.
4. Remove the pin (A) from the cross frame brackets.
5. Start the power unit's engine and raise the power
unit front hitch to its highest position.
6. Pull the secondary SDLA lever to the left and hold
to flip the deck up. Align the slots in the center deck
braces with the holes in the cross frame brackets
and reinstall the pin to lock the deck in the service
position.
7. Shut off the power unit's engine and remove the
ignition key.
8. To return the deck to the operating position, re-
move the pin from the cross frame brackets, return
to the operator's seat, start the engine, and lower
the deck to the operating position by pushing the
secondary SDLA lever to the right. NOTE: if the front
hitch lowers due to hydraulic drift, it may be neces-
sary to start the power unit's engine and raise the
front hitch before removing the pin.
9. Lower the mower deck to the ground.
10. Reinstall the pin in cross frame brackets.
SERVICE
A
Service - 20

Cutting Knife Inspection and Replacement

CAUTION
Wear heavy gloves and use caution when inspecting
or servicing the knives.
1. Flip the deck up to the service position.
2. Inspect the knives for damage or excessive wear.
Pay close attention to the cutting edge, the fasten-
ers, and the mounting hole in the knife.
NOTE: if the knives are worn but undamaged, the
knife set can be rotated to turn the fresh cutting
edges from the rear to the front of the mower.
ATTENTION
To maintain the rotor balance
when replacing a knife set (A),
you must also replace a knife
set (B) on the opposite side of
the rotor. Replace the closest
knife set on a 180 degree plane from the knife set
that needs replacement.
When replacing knives, you should also replace the
mounting hardware.
3. Note the side from which the mounting bolt is
installed and remove the knife mounting hard-
ware. Discard both the knives and the mounting
hardware.
4. Insert the new knives (A) and spacers (B) between
the mounting tabs and fasten with a new bolt (C)
and nut (D). Install the bolt from the same direction
as the original bolt. Tighten only until snug. The
knife must rotate freely.
NOTE: the knife set at each end of the rotor must
have all the spacers installed on the end plate side
of the knife set, to space the knife set away from the
shroud end plate.
C
B
A
A
B
D
A