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Installing the Blades
WARNING
Incorrectly installing the blades could damage
the machine or cause an injury to you or
bystanders.
Install the blades according to the
instructions.
1.
Install the first blade so that it is horizontal, along
with all mounting hardware as shown in
33.
Note:
Tighten the bolt with your fingers.
Important:
Position the curved ends of the
blades to point toward the machine housing.
Be sure to nest the raised areas on each
blade driver with the recesses in the head of
its corresponding spindle, and the pins on
the other side of each blade driver with the
holes in its corresponding blade.
2.
Steady each blade with a board and turn the
blade bolt clockwise with a torque wrench as
shown in
Figure
82 N∙m (60 ft-lb).
Figure 34
Important:
A bolt torqued to 82 N∙m (60
ft-lb) is very tight. Put your weight behind
the wrench and tighten the bolt securely.
This bolt is very difficult to overtighten.
3.
Rotate the installed blade 1/4 turn until it is
vertical, and install the other blade in the same
manner as the first (refer to step 1).
34; torque each blade bolt to
Note:
forming an inverted "T" as shown in
Figure
1. Blade (2)
4.
Tighten the second blade; refer to step 2.
5.
Rotate the blades by hand a full 360° turn to
ensure that they do not touch.
Note:
not mounted correctly. Repeat steps
until the blades no longer touch each other.
Changing the Blade-Drive
Belt
Change the blade-drive belt as needed.
1.
Shut off the engine and wait for all moving parts
to stop.
2.
Disconnect the wire from the spark plug.
3.
Remove the belt cover
the 4 bolts that hold it to the machine housing.
Note:
to the machine housing.
4.
Remove any debris from under the belt cover.
5.
Remove the BBC belt guard and the mounting
hardware.
Note:
for installation later.
g232801
28
The blades should be perpendicular,
Figure 35
If the blades touch each other, they are
(Figure
Save the bolts for installing the belt cover
Save the BBC belt guard and hardware
Figure
35.
g016536
1
through
3
6) by removing
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