Exmark SD270SB20 - Adjusting the Self-Propel Drive Belt Tension; Adjusting the Seed Gate Closed Position

Maintenance
Figure14
1.Top/Bottomadjustment
nuts
4.Turnbuckle
2.Cable5.Self-propeldrivebail
3.Jamnut
•Ifthebaildoesnotcontactthehandle,then
proceedtostep4.
4.Removethehairpin,rotatetheturnbuckle
clockwiseonemorefullturn.
5.Reinstallthehairpinandrotatethejamnutagainst
theturnbuckle.
6.Starttheengineandtesttheadjustment,repeating
thisprocedureasnecessary.
AdjustingtheSelf-Propel
DriveBeltTension
Iftheself-propeldrivebeltsquealsduringoperation
(i.e.,whenmovedfromneutraltoforwardorreverse),
tightenthebeltasfollows:
1.Stopengine,waitforallmovingpartstostop,and
removesparkplugwire.
2.Raisethecuttingbladestothehighestposition.
3.Removeandretainthefourbolts,lockwashers,
andtwospacerssecuringthebeltcovertotheleft
sideofthemachineandremovethecover.
4.Checkthetensionofthetransmissiondrivebelt.
Itshouldnotexmorethana1/4inch(6mm)
withmoderatengerpressureappliedtothespan
justabovethemachineframe.
g016901
Figure15
5.Totightenthebelt,loosenthefourmounting
nuts/boltssecuringthepulleycarriagetothe
frameandmovethecarriagetotheleft,tightening
thebelt,thensecurethefourmountingnutsand
bolts.
Figure16
1.Nut
3.Machineframe
2.Pulleycarriage4.Bolt
6.Reinstallthebeltcoverusingthehardware
retainedinstep3.
AdjustingtheSeedGate
ClosedPosition
Iftheseedgateispartiallyopenwhentheseeder
controlleverisintheOffposition,completethe
following:
1.Stopengine,waitforallmovingpartstostop,and
removesparkplugwire.
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