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8.2
Adjusting dust brush height and 2 inch blade guard caster wheel
WARNING
WARNING: Breathable silica may be generated by use of this product; Silica can cause severe and
permanent lung damage, cancer, and other serious diseases. Do not breath the dust. Do not rely on your
sight or smell to determine if the dust is in the air. Silica may be in the air without a visible dust cloud. If air
monitoring equipment for silica is not provided by your employer at your worksite, you MUST wear
appropriate respiratory protection when using or servicing the machine. Consult your employer and OSHA
regarding the appropriate respiratory protection.
8.2.1
The 2-inch caster wheel on the right side of the blade guard controls the dust brush height. The
dust brush should firmly touch the ground to prevent excessive dust from escaping into the
surrounding work area.
8.2.2
With engine in the OFF position, loosen the 3/8-inch hex nut by turning it clockwise. Then turn the
caster adjustment nut counterclockwise to lower the dust brush or clockwise to raise the dust
brush. See Figure 32.
WORK
SURFAC
E
Figure 32 - Blade guard caster wheel adjustment
8.2.3
With the dust brush in the desired position, tighten the 3/8-inch hex nut by turning it
counterclockwise.
8.3
Checking and adjusting belt tension
8.3.1
The belt tension should be checked after the first hour of operation on a new JS or new belt. On a
used JS, the belt tension should be checked once a day. With engine in the OFF position, remove
the four 5/16" hex bolts that attach the belt guard to the chassis.
8.3.2
Remove the belt guard. The belt should deflect no more than 1/16" under moderate finger pressure
equidistant between the sheaves.
8.3.3
To tighten the belt, loosen the four 5/16" hex nuts that hold the Honda engine to the chassis. Then,
turn the 3/8" hex head bolt clockwise on the front of the JS. This bolt can be seen as item #44 in
Figure 18.
8.3.4
After reaching the desired belt tension, verify that the belt sheaves are properly aligned and the belt
is straight. Retighten the four 5/16" hex nuts that hold the engine against the chassis.
8.3.5
Replace the belt guard with the four 5/16" hex bolts that were removed in step 8.3.1. Never run a
JS without the belt guard in place.
8.4
Bearing lubrication
8.4.1
With engine in the OFF position, slowly tilt the JS back until the handle rests on the ground.
CASTER
ADJUSTMENT
NUT
DUST BRUSH FIRMLY
TOUCHING WORK SURFACE
32
I
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