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3.
4.
5.
F
Continue
holding
the blade onto the star hub of the
spindle, and remove the flange nut and cutting
blade.
Repeat the previous
steps to remove
the other blade.
To properly
sharpen
the cutting
blades, remove equal
amounts
of metal from both ends of the blades along the
cutting
edges, parallel
to the trailing
edge, at a 25 ° to 30 °
angle.
NOTE: If the cutting
edge of the blade has already been
sharpened
to within
1-%" from the edge, or if any metal
separation
is present,
replace the blades with new ones.
See Figure 7-3.
Wind
Sharpen
Edge
Evenly
\\\\
Figure 7-3
6.
It is important
that each cutting
blade edge be ground
equally to maintain
proper
blade balance.
7.
A poorly balanced
blade will cause excessive vibration
and
may cause damage
to the tractor
and result in personal
injury. The blade can be tested by balancing
it on a round
shaft screwdriver.
Grind metal from the heavy side until it
balances evenly.
NOTE:When
replacing
the blades, make certain the side
of the blade marked "Bottom"
faces the ground
when the
mower is turned to the operating
position.
NOTE: Note that the stars of the blades (and spindles)
are not symmetrical.
The blade can be installed
on each
spindle
in only one direction.
Carefully
align the star hole of
the blade with the star of the spindle shaft when installing
each blade. DO NOT improperly
align the blade and spindle
shaft, and attempt
to seat the blade onto the spindle
by
tightening
the hex flange nut.
8.
Rotate the blade as necessary to align its star hole with
the star of the spindle
shaft, then slide the blade onto the
spindle
shaft. Thread the hex flange
onto the spindle
shaft
and use a torque wrench
to tighten
the hex flange nut to
70 to 90 foot-pounds.
9.
Repeat the above procedure
to install the other blade.
Changingthe PTOflelt
_L
ARNING!
Be sure to shut the engine
off, remove
ignition
key, disconnect
the spark plug wire(s) to
prevent
unintended
starting
before removing
the
belt(s).
All belts on your tractor are subject
to wear and should
be
replaced
if any signs of wear are present.
NOTE: Do not use substitute
belts. The V-belt found
on your
tractor is specially designed
for optimal
performance
and service
life for your deck application.
Use only OEM original
replacement
belts.
To replace the PTO belt, proceed
as follows:
1.
Remove the deck from beneath
the tractor
(refer to Cutting
Deck Removal).
2.
Maneuver
the PTO belt downward
and off the idler pulley
on the spring loaded idler bracket.
NOTE: It may be necessary to loosen the hex cap screw and
flange lock nut securing
the pulley to the idler bracket to fit
the belt between
the pulley and bracket.
3.
Slide the belt between
the bottom
of the idler pulley and
top of the timing
belt idler pulley below. See Fig. 7-4.
f
Idler Bracket and Pulley
Fixed Idler Pulley
PTO Belt \
4.
,J
Figure 7-4
Loop the belt and push out of the V- groove
of the drive
pulley on the right hand spindle assembly.
Lift the belt over
the pulley and out from beneath
the spindle
cover. See Fig.
7-4.
5.
Loop the new PTO belt and slide between
the top of the
drive pulley and spindle
cover. Maneuver
the belt around
and into the V-groove
of the drive pulley.
6.
Route the back side of the belt around
idler pulley and
between
the idler pulley and idler bracket. Re-tighten
the
hex screw and flange lock nut if loosened
earlier. Refer to
Fig. 7-4.
7.
Route the belt around
the fixed idler pulley as shown in Fig.
7-4 and re-install
the deck as described
in "Reinstalling
the
Cutting
Deck" later in this section.
SECTION 7
--
SERVICE
2S
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