Toro Groundsmaster 300 Series Service Manual page 352

Checking and Correcting Mismatch of Blades (Fig. 9, 10)
If there is mismatch between the blades, the grass will
appear streaked when it is cut. This problem can be
corrected by making sure the blades are straight and all
blades are cutting on the same plane.
1. Put the deck into position on a flat 4 x 8 foot sheet of
plywood that is at least 3/4 inch thick.
IMPORTANT: If the rear caster wheel axle is in the
lower hole, put a 3/4 inch block under each front
caster wheel to level the deck. This is not necessary
if the rear caster wheel axle is in the upper hole.
2. Adjust height of cut so all six (6) height of cut spacers
are below the caster arm (highest height of cut).
3. Lower cutting unit onto flat surface.
4. Rotate blades until the ends face forward and back-
ward. Measure from floor to front tip of cutting edge and
record this dimension. Then rotate same blade so op-
posite end is forward and measure again. The difference
between dimensions must not exceed 1/8 inch. If differ-
ence exceeds 1/8 inch, replace the blade because it is
bent. Make sure to measure all five (5) blades.
5. Rotate blades until the ends face forward and back-
ward. Measure and record the dimensions from floor to
tips of blades at the front and the rear. Rotate blades
until ends face side to side. Measure and record dimen-
sions from floor to tips of blades at each end of blades.
Compare measurements of all five blades. the maxi-
mum difference between any two adjacent blades
should not exceed 1/4 inch. the maximum difference
between the highest and lowest blade should not ex-
ceed 3/8 inch. The three center section blades can be
adjusted with shims (see Step 7). The wing blades can
be adjusted by repositioning the hinge bushing brackets
and/or the wing stops (see Step 8).
6. Rotate blades so tips line up with on another. Tips of
adjacent blades must be within 1/8 inch of each other.
If tips are not within 1/8 inch of each other, proceed to
step 7 and add shims between spindle housing and
bottom of cutting unit or Step 8 to adjust wing sections.
Adjustments
Center Section:
7. Remove locknuts from spindle, in the area where
shims must be added. To lower a blade, add a shim,
Part No. 3256-24, between spindle housing and bottom
of cutting unit. Continue to check alignment of blade and
add shims until tips of blades are within the required
dimension.
IMPORTANT: Do not use more than three (3) shims
at any one hole location. Use decreasing numbers
of shims in adjacent holes of more than one shim is
added to any one hole location.
Wing Sections:
8. Raise or lower hinge bushing brackets and/or adjust
front and rear stops to achieve proper blade match and
height of cut. Each wing section should rest against the
front and back stops. A 1/2 inch gap between the wing
section and the center section should be maintained.
Torque fasteners to 65 ft-lb. Adjust wing lift cylinders and
belt tension after making wing adjustments. Install cov-
ers on top of cutting unit.
1/8"
1. Adjustable stop
Page 12 - 8
Figure 9
Figure 10
2. 1/2" gap
®
Groundsmaster 300 Series