MTD 450 Serie Manual Del Operador página 12

Lubrication
WARNING
Alwaysstopengine,
disconnect s park
plug,and ground
againstengine
before cleaning,
lubricating or
doinganykindof
maintenanceon your
machine.
points before
reassembly.
*Model464 Shown
Figure 5-1
/
/*Model464 Shown
Figure 5-2
General Recommendations
1. Alwaysobservesafetyruleswhen performing
anymaintenance.
2. Thewarrantyon this chippershredderdoes not
coveritemsthat havebeen subjectedto operator
abuseor negligence.Toreceivefull valuefrom war-
ranty,operatormustmaintainthe chippershredder
as instructedhere.
3. Changingof engine-governed speedwill void
enginewarranty.
4. All adjustmentsshouldbe checkedat leastonce
eachseason.
5. Periodicallycheckall fastenersand makesurethese
are tight.
_ WARNING:Alwaysstopengine,
disconnect spark plug, and ground
against engine before cleaning,
lubricating or doingany kind of
maintenance on your machine.
1. Lubricatethe releaserodand springwith lightoil once
a season.See Figure5-1.
2. Lubricatethe pivot pointson the hopperassemblywith
lightoil oncea season.See Figure5-1.
3. Lubricatethe pivot pointson the dischargechute with
lightoil oncea season.See Figure5-1.
4. Followtheaccompanying engine manualfor lubrica-
tion scheduleand instruction for engine lubrication.
Engine Care
1. Maintainoil levelas instructedin enginemanual.
2. Serviceair cleanerevery25 hoursundernormal
conditions.Cleaneveryfew hoursunderextremely
dustyconditions.Referto engine manual.
3. Cleansparkplug and resetthegap once a season.
Checkenginemanualfor correctplugtype and gap
specifications.
4. Cleanengineregularlywith a cloth or brush. Keepthe
coolingsystem(blowerhousingarea) cleanto permit
properair circulation.Removeall grass,dirt and
combustible debrisfrom mufflerarea.
Removing The Flail Screen
If the dischargearea becomesclogged,removetheflail
screenand cleanarea as follows:
1. Stopthe engineand makecertain the chippershred-
der has cometo a completestop.
2. Disconnectsparkplug wirefrom sparkplug and
groundagainsttheengine.
3. a. Removethe bagand two wingknobson eachside
of the chutedeflector.See Figure5-2.
b. Lift the chute deflectorup to keepitoutof theway.
c. Removethetwo hairpinclips fromeach clevispin
whichextendthroughthe housingand removepins.
d. Removetheflail screenfrom insidethe housing
and cleanthe screenby scrapingor washingwith
water.See Figure5-2.
4. Reinstallthe screen,makingcertainto reassemblethe
flail screenwith thecurve sidedown.
5. Reattachthe chute deflectorwith the hardware
previouslyremoved and connectthe bag to unit.
Sharpening Or Replacing Chipper
Blades
1. Disconnectthe spark plugwire and groundagainstthe
engine.
2. Removetheflail screenas instructed inthe previous
section.
3. Removethechipperchute by removing three hexnuts
and washers.
4. Removethechipperchute supportbrace(Model
Series460) fromthe frame by removingthe hexbolts.
5. Rotateimpeller assemblyby hand untilyoulocate one
of two chipperbladesinthe chipperchute opening.
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