Craftsman 28933 Operation Manual - Page 28

spindleassemblytimingpulley.Referto

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4. Applyingforceto eitherthetiming belt idlerpulleyor thetiming 9. Rotatethe RH spindleassemblyto positionthedrive pulleytiming belt idler bracket,pivotand hold theidler bracketagainstthe arrowas shownin Figure19.Then withoutmovingthe RH drive springtensionjust farenoughto allowliftingthe timing beltoff pulley,pull the timingbelt tight againstthe RH timingpulley,above and abovethe idler pulley.Carefullyreleasethe idler bracket.See the timing beltidler pulley,andover to the LHtiming pulley. Figure21. 10. Turnthe LHtiming pulleysothat its timingarrowis 900from the 5. Loopthe timing beltand lift out of the timingpulleyand overthe RH spindleassemblytiming arrow.Referto Figure23. righthand spindleassembly.Maneuverthe belt betweenthe drive pulleyon top of the spindleassemblyand the spindlecoverto remove. 11. Whilemakingsure notto changethe positionof either pulley,loop the timing beltoverthe LH timingpulley. 12. After makingsurethe springis hookedonto the idler bracketand 6. Repeattheaboveprocedureto removethe beltfrom the left hand screw,pivot thetiming idler bracket!idlerpulleyagainstthe spring spindleassemblytimingpulley.Referto Figure21. tensionjust far enoughto allowyouto lowerthe backsideof the 7. Loopthe newtimingbeltand maneuverthe belt betweenthe drive timing beltonto theidler pulley.See Figure23. pulleyon top of the righthand spindleassemblyandthe spindle cover.Lowerthe belt until looselyaroundthe right handtiming pulley.Referto Figure21. 13. Re-checkthe timingarrowson the two pulleys.If they have movedfrom the900 positionwhentensioningthe timing belt, pivot the idler pulleyto relievetensionon the beltand re-positionthe 8. Notethe arrowson thetop of the timingpulleyon the LHspindle pulleys.The timing arrows MUSTbe positioned900from each and on the drivepulleyof the RH spindleassembly.Thesetiming other as shownin Figure23. arrowsMUSTbe positioned90o fromeach otheras shownin 14. Re-installthe idler bracketbackstopcomponentsas originally Figure23. installedin thedeck housing,and positionso that thereis a 1/8" gap betweenthe backstopand idler bracket.Tightenthe hex screwand flangelock nut to securein theadjustedposition. Pulley Arrow Pulley TimingArrow @ Figure23 28

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4.
Applyingforceto eitherthetiming belt idlerpulleyor thetiming
belt idlerbracket,pivotand holdtheidlerbracketagainstthe
springtensionjust farenoughto allowliftingthe timing beltoff
andabovethe idlerpulley.Carefullyreleasethe idlerbracket.See
Figure21.
5.
Loopthe timing beltand lift out of the timingpulleyand overthe
righthandspindleassembly.Maneuverthebeltbetweenthedrive
pulleyon top of the spindleassemblyand the spindlecoverto
remove.
6.
Repeattheaboveprocedureto removethe beltfrom the left hand
spindleassemblytimingpulley.Referto Figure21.
7.
Loopthe newtimingbeltand maneuverthe belt betweenthe drive
pulleyon top of the righthand spindleassemblyandthe spindle
cover.Lowerthe belt until looselyaroundthe right handtiming
pulley.Referto Figure21.
8.
Notethe arrowson thetop of the timingpulleyon the LHspindle
andonthedrivepulleyoftheRHspindleassembly.Thesetiming
arrowsMUSTbe positioned90ofromeach otheras shownin
Figure23.
9.
Rotatethe RHspindleassemblyto positionthedrive pulleytiming
arrowas shownin Figure19.Then withoutmovingthe RH drive
pulley,pullthetimingbelttightagainsttheRHtimingpulley,above
thetimingbeltidlerpulley,andovertotheLHtimingpulley.
10. Turnthe LHtiming pulleysothat its timingarrowis 900from the
RHspindleassemblytimingarrow.Referto Figure23.
11. Whilemakingsure notto changethe positionof either pulley,loop
thetimingbeltovertheLHtimingpulley.
12. After makingsurethe springis hookedonto the idler bracketand
screw,pivotthetimingidlerbracket!idlerpulleyagainstthespring
tensionjust far enoughto allowyouto lowerthe backsideof the
timingbeltontotheidlerpulley.SeeFigure23.
13. Re-checkthe timingarrowson the two pulleys.If they have
movedfromthe900positionwhentensioningthetimingbelt,pivot
the idlerpulleyto relievetensiononthe beltand re-positionthe
pulleys.
The
timing arrows MUSTbe
positioned900
from
each
other as
shownin Figure
23.
14. Re-installtheidlerbracketbackstopcomponentsasoriginally
installedin thedeck housing,and positionso that thereis a 1/8"
gap betweenthe backstopandidlerbracket.Tightenthe hex
screwandflangelocknuttosecureintheadjustedposition.
Pulley
Arrow
@
Pulley
TimingArrow
Figure23
28