Blade Replacement; How To Check And Remove Blades - Kubota RCK72-F36 Operator's Manual

BLADE REPLACEMENT

To avoid personal injury:
A Wear heavy gloves or wrap the end of the blade
with a rag when you handle blades.
A The blade bolts have Right hand threads. Turn them
counterclockwise to loosen.
A To prolong the service life of the blades, reposition
them as shown in the figure below periodically.
(1) LH blade
(2) Center blade
(3) RH blade
The blade cutting edges should be kept sharp at all times.
Sharpen the cutting edges, if they resemble the blade in
figure (B). Replace the blades if they appear similar to the
blade as shown in figure (C).
(A) New blade
(B) Worn blade
(C) Cracked blade
BHow to Check and Remove Blades
1. Tilt up the mower and turn it over to expose the blades.
2. Wedge a block of wood between the blade and mower
housing or install box wrench over pulley nut to
prevent spindle from rotating while removing blade
bolts, loosen the blade bolt as shown in the figure.
(1) Block
(1) Spindle holder
(2) Blade
(3) 2-Cup washers
(4) Spline boss
(5) Bolt
(6) Spindle guard
A Use the proper metric size box or socket wrench to
tighten or loosen the blade mounting bolt.
A Make sure that the cup washer is not flattened out or
worn, causing blade to slip easily. Replace both cup
washers if either of them is damaged.
Pass the spline boss through the blade and 2 cup
washers, and tighten the bolt.
A Tightening torque of the blade bolts.
Blade 10 to 12 kgf-m (72 to 87 ft-lbs.)
MAINTENANCE 21
(A) "Loosen"