Operator's Manual

DriveChainMaintenance
CheckingandAdjustingthe
DriveChain
ServiceInterval:Aftertherst10hours
Every50hours
Thedrivechainshouldhave5to10mm(7/32to13/32inch)
ofexwhenapplying6.8kg(15lb)ofpressureatmid-span.
CheckingtheDrive-ChainTension
1.Removethedividerplate;refertoRemovingthe
DividerPlate(page22).
2.Placeastraightedgealongthechainfrom1sprocket
totheother(Figure45).
G021606
1
Figure45
1.Flexof5to10mm(7/32to13/32inch)
3.Withyournger,pushonthechainwith6.8kg(15lb)
ofpressure,midwaybetweenthesprockets(Figure45).
4.Measurethedistancefromthechaintothestraightedge;
thedistanceshouldbe5to10mm(7/32to13/32
inch).Ifthechaintensionneedsadjustment,referto
AdjustingtheDrive-ChainTension(page30).
5.Installthedividerplate;refertoInstallingtheDivider
Plate(page23).
AdjustingtheDrive-ChainTension
Note:Adjustingthetensionofthedrivechainaffectsthe
tensionofthebelts;adjustthebelttensionafteradjusting
thedrive-chaintension.
1.Removethedividerplate;refertoRemovingthe
DividerPlate(page22).
2.Loosenthenutsandboltsthatsecurethepillow-block
bearingsfortheidlerpulley(Figure46).
G021602
1
2
3
4
Figure46
1.Drivechain
3.Bolts(4)
2.Pillow-blockbearings4.Idlerpulley
3.Slidethepillow-blockbearings,alongwiththeidler
pulleyandsmallsprocket,totherighttoincrease
thechaintension,ortothelefttodecreasethechain
tension.
Note:Toslidethepillow-blockbearingstotheleft,
youmustloosenthejamnutandtensionerbolt(Figure
47).Toslidethepillow-blockbearingstotheright,
youmustloosenthemotormountingnutsandbolts
(Figure39).
1
2
G021605
Figure47
1.Tensionerbolt2.Jamnut
4.Whenthechainhas5to10mm(7/32to13/32inch)
ofex,tightenthetensionerbolt,thejamnut,andthe
nutsandboltsthatsecurethepillow-blockbearings.
5.Adjustthebelttension;refertoAdjustingtheBelt
Tension(page26).
6.Installthedividerplate;refertoInstallingtheDivider
Plate(page23).
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