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Adjusting the Blade Pitch
Blade pitch is the difference in height-of-cut from the
front of the blade plane to the back of the blade plane.
Use a blade pitch of approximately 8 mm (5/16 inch).
The back of the blade plane should be 8 mm (5/16
inch) higher than the front.
1.
Position the machine on a level surface.
2.
Set the cutting unit to the desired height-of-cut,
move the throttle lever to the S
the engine, set the parking brake, and remove
the ignition key.
3.
Rotate the center blade so that it points straight
forward.
4.
Using a short ruler, measure from the floor to
the front tip of the blade.
5.
Rotate the same blade tip to the rear and
measure from the floor to the tip of the blade at
the rear of the deck.
6.
Subtract the front dimension from the rear
dimension to calculate the blade pitch.
7.
Adjust the jam nuts securing the rear deck
yokes/chains to raise the rear of the deck so
that the blade pitch is set to 8 mm (5/16 inch)
(Figure
99).
Figure 99
1. Chain
2. Yoke
position, stop
LOW
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3. Jam nut
4. Mower deck
Replacing the Grass
Deflector
WARNING
An uncovered discharge opening could allow
the lawn mower to throw objects at you or
bystanders and result in serious injury. Also,
contact with the blade could occur.
• Never operate the machine without a mulch
kit or grass deflector installed.
• Make sure that the grass deflector is in the
down position.
1.
Lower the cutting unit to the shop floor, move
the throttle lever to the S
engine, set the parking brake, and remove the
ignition key.
2.
Remove the locknut, bolt, spring, and spacer
holding the deflector to the pivot brackets
(Figure
100).
Note:
Remove damaged or worn grass
deflector.
1. Bolt
2. Spacer
3. Locknut
4. Spring
3.
Place the spacer and spring between the
replacement grass-deflector brackets
100).
Note:
Place the left J-hook end of the spring
behind the deck edge.
Note:
Make sure that the left J-hook end of the
spring is installed behind the deck edge before
installing the bolt as shown in
4.
Install the bolt and nut.
72
position, stop the
LOW
Figure 100
5. Spring
6. Grass deflector
7. Left hook end of spring
8. Right hook end of spring
(Figure
Figure
100.
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