Service And.adjustments - Craftsman 486.24211 Owner's Manual

BRUSH REPLACEMENT
NOTE: Brush replacement should be done one brush at a
time.
• Remove the hopper bag from the sweeper.
• Loosen the hex bolts and lock nuts on two single
brush retainers which clamp one brush to the double
brush retainers. Do Not loosen or remove the bolts
which fasten the double brush retainers to the brush
shaft. See figure 27.
• Slide the brush out of the retainers, noting on which
side of the brush the bristles ovedap, See figure 27.
• Install new brush, making sure the bristles overlap on
the same side of the brush as before. See figure 27.
BRUSH ROTATION
BRUSH
SHAFT
OVERLAP
BRISTLES
SINGLE
>BRUSH
RETAINERS
DOUBLE BRUSH R
OVERLAP
BRISTLES
FIGURE 27
BRUSH ROTATION
SPROCKET, CHAIN AND PAWL SERVICE
IMPORTANT: Do not remove both wheels at the same
time to avoid mixing of parts. (The R.H. and L.H. ratchet
sprockets are not interchangeable.) Make notes on the
position of washers and snap rings during disassembly.
• Remove the dust cover by remov!ng the two rivets
which fasten it to the wheel housing. (It is not necessary
to remove the dust cover if you are only cleaning and
lubricatingthe chain and sprockets.)
• Remove the retaining rings and washers which hold the
sprocketsonto the shafts.
• Remove the chain and both sprockets, holdingthem in
positionand slidingthem off both of the shafts. (Look for
the drive pin, which may fall out of the brush shaft when
the ratchetsprocket is removed.) See figure 28.
• To reassemble, insert the drive pin through the hole at
the end of the brush shaft. Make sure the pin slides
back and forth easily in the shaft.
• Ughtlygrease both shafts and the chain, and fill the
ratchet sprocket with grease. Assemble the chain with
both sprockets back onto the shafts.
• Lightlygrease the axle and then reassemble the wheel.
The brushes should rotate only during forward rotation
of the wheel. If the brushes are driven (rotated) by both
forward and reverse rotation of the wheel, the drive pin
is jamming in the ratchet gear. Disas_sembie and clean
and lubricate the cldve pin and ratchet gear.
DUST COVER GEAR SPROCKET
\
CHAIN
RATCHET
SPROCKET
PIN
FIGURE 28
Wheels skid when sweepingl
• Brushes set too low,
• Brushes are jammed
• Wheels are jammed.
• Adjust height till brushes are 1/2"
down into grass.
• Stop sweeper. Remove obstruction.
• Remove one wheel atatime to check
for obstruction_ordamage. Refer to
Service and Adjustments section.
13