7 MAINTENANCE
en-38
7.3
SHARPENING BLADES_____________________________________________________
1.
Place a wooden block between the blade and mower
housing to stop the blade from moving. To remove
blade, turn screw holding blade counterclockwise
.
2.
When dressing or sharpening the blade, do not
follow the original pattern of grind as shown in
(A)
.
Grind new cutting edges at an angle as shown in
(B)
.
If the maximum total loss of the blade reaches 1/2 in.
(1.3 cm), do not sharpen further, replace blade.
3.
Make sure an equal amount of material is removed
from both sides of blade to prevent having an
unbalanced blade. An unbalanced blade will cause
excessive vibration and may damage the mower.
4.
Use a blade balancer (JAC 5016) to check the
blade after sharpening.
5.
Identify the three clockwise rotation
(D)
and four
counter-clockwise rotation
(E)
blades. The blades
for clockwise rotation are installed on the left front
deck motor, the outside left wing deck motor, and
the inside right wing deck motor. (Rotation is
determined by normal motor rotation viewed from
top of deck).
6.
Install blades so cutting edges
(C)
face the direction
of rotation as shown in
Figure 7C
. Air vane of blade
must face in toward deck housing.
Torque center mounting screw holding blade to 75
ft. lb. (102 Nm).
Figure 7B
Figure 7C
WARNING
The mower blades can develop sharp edges. Use
caution whenever servicing and handling.
WARNING
Resharpening the blade beyond the allowable 1/2 in.
(1.3 cm) may allow blade tip to break off and be
thrown from the mower. Such an incident can cause
very serious injury to bystanders and/or property
damage.
!
!
A
B
1/2” (1.3 cm)
Maximum
HR024
Bottom view of front deck
in its service position
Bottom view of side decks
raised to their transport position
.
Left Side
Right Side
C
C
C
D
E
E
D
E
C
E
D
C
Summary of Contents for R311T-T4I
Page 63: ...NOTES 11 en 63 11 NOTES ...
Page 125: ...REMARQUES 12 fr 63 12 REMARQUES ...
