Figure38, PTOClutchAdjustment
A. Adjustment Window (Qty. 3, one shown)
B, Adjustment Nut
Figure39. Adjust PTO Clutch
A. Window
B. Adjustment Nut
C. .016"-,018" (0,40-0,45mm) FeelerGauge
PT0 Clutch Adjustment
Checkthe PTOclutch adjustment after every 100 hours of
operation. Also perform the following procedure if the clutch
is slipping or will not engage,or if a new clutch has been
installed.
1. Removekey from ignition switch and disconnectspark
plug wires to prevent the possibility of accidentalstarting
while the PTOis beingadjusted.
2. SeeFigure38. Notethe position of the 3 adjustment
windows (A) in the side ofthe brakeplateand the nylock
adjustment nuts (B).
3. Insert a .016"-.018" (0,40-0,45mm) feeler gauge (C)
through eachwindow, positioning the gauge betweenthe
rotor face andthe armature face as shown in Figure 39.
4. Alternatelytighten the adjustment nuts (B,Figure38)
until the rotor faceand armature facejust contactsthe
gauge.
5. Checkthe windows for anequal amount of tension when
the gauge is inserted and removed,and makeany
necessaryadjustments by tightening or looseningthe
adjustment nuts.
NOTE."Theactual air gap between therotor and armature
may vary evenafter performing the adjustment procedure,
Thisis due to dimensional variationson component parts,
and is an acceptablecondition,
6. Checkthe mower blade stopping time. The mower
bladesand mower drive belt should come to a complete
stop within five (5) secondsafter the electric PTOswitch
isturned off.
AWARNING
Toavoidseriousinjury,perform adjustmentsonlywith
enginestopped,key removedandrider on level
ground.
BladeBrakeCheck
Mower bladesand mower drivebelt should come to a
completestop within five (5) secondsafter electric PTO
switch is turned off.
1. With parking brakeengaged,PTOdisengagedand an
operatorin the seat,start the engineengine.
2. Havean assistant observethe mower drive beltthrough
the opening betweenthe frame and top of mower deck.
Engagethe PTOandwait severalseconds. Disengagethe
PTOandcheckthe amount of time it takesfor the mower
drivebelt to stop.
3. If the mower drive belt doesnot stop within five (5)
seconds, perform the PTOClutchAdjustment. If the belt
still doesnot stop within five (5) seconds, seeyour
dealer.
36 www.snapper.com
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