Craftsman 88733 Operation Manual - Page 19

Replacing, Belts

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Blade Sharpening iMPORTANT:If any metal separationis present,replacethe blades with newones. Toproperlysharpenthe cuttingblades,removeequal amountsof metalfrom bothends of the bladesalong thecuttingedges, parallelto the trailingedge,at a 250to 300angle, Figure21. REPLACING BELTS Beforeperforminganytypeof maintenanceon themachine,waitfor all partsto stopmovinganddisconnecthe sparkplugwire. Failureto followthis instructioncouldresultin personalinjuryor propertydamage Avoidthe possibilityof a pinchinginjury. Donot placeyourfingers betweenbeltsand pulleys. J Figure21 It is importantthat eachcuttingbladeedge be groundequallyto maintainproper bladebalance.A poorlybalancedblade willcause excessivevibrationand maycause damageto the mowerand result in personalinjury.Thebladecan be testedbybalancingit on a round shaftscrewdriver.Grind metalfrom the heavyside untilit balances evenly. Blade Installation 1. Wheninstallinga blade,placethe sideof the blade with a part numberstampedin it facing thegroundwhenthe moweris in the operatingposition. 2. Use a torquewrenchto tightenthe spindleflangenutto between 70-90foot-pounds. The mowerusesthreebelts: 1)drivebelt,2) deck engagemenbt elt,3) bladetimingbelt. Beforereplacinga belt,observehowthebeltis routed aroundthe pulleysand bracketsto helpwheninstallinga replacement. IMPORTANTT: he beltson the mowerare speciallydesignedto engageand disengagesafely.Fora properworkingmachine,use factoryapprovedbelts. Replacing the Drive Belt 1. Stopengine,wait forall parts to stop moving,and disconnect sparkplug wire. . Releaseall mowercontrols. 3. Removebelt coveras instructedearlier in this section. 4. Loosenbeltkeeper(A).The belt keeperis attachedto the undersideof the mowerframe,Figure22. Figure22 5. Loosenthe idler pulley(B) by looseningboltand nut, Figure22. 6. Removebelt (C) fromaround pulleys,Figure22. 7. Routenewbeltaroundthe pulleysmakingsureto tighten nuts, bolts,and beltkeeper. 8. Replacethe beltcover. 19

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Blade
Sharpening
iMPORTANT:Ifanymetalseparation
is present,replacethe blades
withnewones.
Toproperlysharpenthe cuttingblades,removeequalamountsof
metalfrombothendsofthebladesalongthecuttingedges,parallelto
the trailingedge,at a 250to 300angle, Figure21.
J
Figure21
It is importantthat eachcuttingbladeedge be groundequallyto
maintainproperbladebalance.A poorlybalancedbladewillcause
excessivevibrationandmaycausedamageto the mowerandresult
in personalinjury.Thebladecan be testedbybalancingit on a round
shaftscrewdriver.Grindmetalfromthe heavyside untilit balances
evenly.
Blade
Installation
1.
Wheninstallinga blade,placethe sideof the blade with a part
numberstampedin it facing thegroundwhenthe moweris in the
operatingposition.
2.
Use a torquewrenchto tightenthe spindleflangenutto between
70-90foot-pounds.
REPLACING
BELTS
Beforeperforminganytypeofmaintenanceonthemachine,waitfor
allpartsto stopmovinganddisconnecthe sparkplugwire. Failure
to
followthisinstructioncouldresultinpersonalinjuryorpropertydamage
Avoidthe possibilityof a pinchinginjury. Donot placeyourfingers
betweenbeltsand pulleys.
The mowerusesthreebelts: 1)drivebelt,2)deckengagement
belt,3)
bladetimingbelt.Beforereplacingabelt,observehowthebeltis routed
aroundthepulleysandbracketstohelpwheninstallinga replacement.
IMPORTANT:
The beltson the mowerare speciallydesignedto
engageanddisengagesafely.Fora properworkingmachine,use
factoryapprovedbelts.
Replacing
the
Drive
Belt
1.
Stopengine,waitforallpartstostopmoving,anddisconnect
sparkplugwire.
Releaseall mowercontrols.
.
3.
4.
Removebelt coveras instructedearlierinthissection.
Loosenbeltkeeper(A).The belt keeperis attachedto the
undersideofthemowerframe,Figure22.
Figure22
5.
Loosenthe idlerpulley(B) by looseningboltandnut, Figure22.
6.
Removebelt(C) fromaroundpulleys,Figure22.
7.
Routenewbeltaroundthepulleysmakingsuretotightennuts,
bolts,and beltkeeper.
8.
Replacethe beltcover.
19