7
If
either end of blade rotates downward,
grind
or
file
that end (do not file cutting edge).
The blade is properly balanced when neither
end drops.
A
SAFETY WARNING: Always replace
blades that are questionable. Virbra-
tlon
from an
out
of balance blade
or
dam-
aged blade collar can cause englne damage
and operator fatigue.
Blade Tracking
Swirl, arc,
or
half-moon cuts on smooth level
lawns can be caused by the blade being too high
or
too low in front
or
rear area of the housing.
Place mower on a flat level surface, with all four
height adjusters set in the highest cutting height
position.
8
Measure the distance between the level
surface and one end of the blade tip at side
(Point
"A).
Rotate blade 180" and measure
from same end of blade tip at the other side
(Point
"B").
Compare measurements.
SPECIFICATION
0-1/8"
Difference -Side to Side
POINT
'A'
9
Rotate blade to rear of mower housing
(Point "C"). Measure distance from level sur-
face to blade tip. Rotate blade
180"
to front of
housing (Point
"D")
and measure distance from
level surface to same end of blade tip. Blade
lower in front (Point
"D")
by
5/32"
for
correct blade tracking.
I
SPECIFICATION
5/32"
Difference
Lower
Front
than Rear
!
NOTE:
Shim spacers Part
No.
602914
(.020),
or Part
No.
604563
(.025)
can be used between
housing and engine mounting plate to bring
POINT
'D'
blade back to proper track.
9
5/32”
Lower
Minimum
8-4
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