Craftsman 247.77588O Chipper User Manual


 
Disconnectsparkplug wire and move itaway
from spark plug.
Lowerthehopperassembly.Block upthe
housing.See figure19.
Weld Bolt
Allen
Screw
Pipe
causedamagetotheunit.The bladecan betasted
for balance bybalancingitona roundshaft
screwddverornail.Removemetalfrom theheavy
sideuntilitisbalancedevenly.See figure20.
When reassemblingtheblade, tightencenter
bolttobetween 550 and 650 inch-poundsand
thetwo outerboltsto between250and 350 inch-
pounds,or lackingtorquewrench,tighten
securely.
1.insertscrewdriverthroughhole
d/
2. Bladeshouldbe parallelto ground
Screv_
Driver\ Blade
i I --
Ground
Torque Wrench
Figure 20
Figure 19
Remove the sixhexlocknutsand lockwashers
from thehousingweld boltsusinga 1/2"wrench.
Separate the chipper-shredderintotwo halves.
Remove the back-upplate.
NOTE: When reassembling, make certain the
embossed tab faces inward towards the impeller,and
opening on the back-up plate is toward the bottom of
the unit.
Remove the two hand knobs and cupped
washerswhichsecurethechutedeflector. Raise
thechute deflector.
Inserta 1/2"or 3/4" diameterpipethroughthe
flailscreenintothe impellertokeep itfrom
turning,or removetheflailscreenand inserta
piece ofwood(2 x4) intothe chuteopening.
Removethe twooutsidescrewson theblade,
usinga 3/16" allenwrenchand a 1/2"wrench.
Remove theblade byremoving the center bolt,
lockwasher and fiatwasher.
,_ WARNING: Usecautionwhen removing
theblade to avoidcontacting theweld bolts
on thehousing.
When sharpening the blade, follow theoriginal
angleofgrind as a guide. Itisextremely
important that each cutting edge receives an
equat amount of grinding to prevent an
unbalanced blade.
An unbalanced blade will cause excessive
vibration when rotating at high speeds and may
ADJUSTING CARBURETOR
A
WARNING: Ifanyadjustmentsaremade to
the engine whiletheengineisrunning(e.g.
carburetor),keep clear ofall moving parts.
Becareful ofheated surfaces andmuffler.
The carburetor has been pre-set at the factory and
shouldnot requireadjustment.However, ifyour
enginedoes notoperate properlydue to suspected
carburetor problems,take yourchipper-shredderto
yournearestSEARS servicecenter.
ENGINE SPEED
The engine speed onyour chipper-shredderhas been
set at the factory. Do not attempt to increase engine
speed or it may result in personal injury. If you believe
the engine is running too fast or too slow, take your
chipper-shredder to the nearest SEARS service
center for repair and adjustment.
TIRES
Recommendedoperating tire pressure is 24 p.s.i.
(sidewalloftire maygive tire manufacturers
recommendedpressure).Equaltire pressureshould
be maintained on bothtires.
WARN ING: Excessivepressurewhenseating
beadsmay causetire/rimassemblytoburstwith
forcesufficienttocauseseriousinjury.
16