Craftsman 486.242221 - Service and Adjustments; Brush Replacement; Sprocket, Chain, and Pawl Service; Troubleshooting

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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removing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lubricatingthechainandsprockets.)
• Removetheretainingringsandwasherswhichhold
thesprocketsontotheshafts.
• Removethechainandbothsprockets,holdingthemin
positionandslidingthemoffbothoftheshafts.(Look
forthedrivepin,whichmayfalloutofthebrushshaft
whentheratchetsprocketisremoved.)Seegure27.
• 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.
• Lightlygreasebothshaftsandthechain,andllthe
ratchetsprocketwithgrease.Assemblethechainwith
bothsprocketsbackontotheshafts.
• Lightlygrease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.Disassembleandclean
andlubricatethedrivepinandratchetgear.
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gure26.
• Slidethebrushoutoftheretainers,notingonwhich
sideofthebrushthebristlesoverlap.Seegure26.
• Installnewbrush,makingsurethebristlesoverlapon
thesamesideofthebrushasbefore.Seegure26.
GEAR SPROCKET
CHAIN
RATCHET
SPROCKET
DRIVE PIN
DUST COVER
FIGURE 27
BRUSH ROTATION
BRUSH ROTATION
OVERLAP
BRISTLES
OVERLAP
BRISTLES
SINGLE
BRUSH
RETAINERS
DOUBLE BRUSH RETAINER
BRUSH
SHAFT
FIGURE 26
• Brushessettoolow.
• Brushesarejammed
• Wheelsarejammed.
Wheelsskidwhensweeping. • Adjust height till brushes are 1/2"
down into grass.
• Stopsweeper.Removeobstruction.
• Removeonewheelatatimetocheck
forobstructionordamage.Referto
ServiceandAdjustmentssection.
SERVICE AND ADJUSTMENTS
TROUBLESHOOTING