19
BLADE SHARPENING
When sharpening blades be sure to
balance them. Unbalanced blades will
cause excessive vibration that can
damage blade spindle bearings.
Vibrations may also cause structural
cracks in mower housings.
Follow original sharpening pattern. Do not
sharpen back side of blade. Do not sharpen blade
to a razor edge, but leave approximately
1
/64 inch
(.4 mm) blunt edge.
BLADE REMOVAL
(refer to Fig. 13)
Remove bolt (A) which has right hand threads.
Remove lock washer (B), flat washer (C), fiber
washer (D), blade and fiber washer (D).
BLADE INSTALLATION
Your dealer can supply Grasshopper
replacement blades. They are made of
special steel alloys and subjected to
rigid heat-treat and inspection
requirements. Substitute blades may
not meet these rigid specifications and
MAY BE DANGEROUS.
Reverse the removal procedure. Be sure fiber
washers are installed as shown.
When installing a blade, the lift of the
blade must be toward blade spindle
housing (refer to Fig. 13). Tighten bolt
(A, Fig. 13) into blade spindle housing
to 50-55 ft-lbs (7.0-7.6 kg/m).
BELT ADJUSTMENT
(refer to Fig. 14)
Stop engine and remove key. The belt tension is
set at the factory, but may need adjustment after
first hour of initial use. Periodically belt should
be checked for proper tension, following the
procedure below.
1. Loosen locknut and back-off as needed to
adjust spring.
2. Tighten draw nut until spring has expanded to
approximately 5.75 inches (14.6 cm) as
shown.
3. Tighten locknut.
IMPORTANT
WARNING
IMPORTANT
Fig. 14
Fig. 13
B l a d e
S p i n d l e
H o u s i n g
D
D
C
B
A
L i f t o f B l a d e
0 0 0 2 7
5 . 7 5 "
1 4 . 6 c m
0 0 0 5 3
L o c k N u t
D r a w N u t
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