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Howto Checkand Adjustthe PTOClutch
(46 & 52" Models)
Checkthe PTOclutch adjustment after the initial 25 hour
break-in period and then after every 250 hours of operation.
Also perform the following procedure if the clutch is slipping
or will not engage,or if a new clutch has beeninstalled.
,_ WARNING:Beforeyou make an inspection,
adjustment,or repair to the unit, disconnectthe
wire tothe sparkplug. Removethewire from the
sparkplug to preventtheengine fromstarting by
accident.
1. Removekey from ignition switch and disconnect spark
plug wires to preventthe possibility of accidental
starting while the PTOis being adjusted.
2. Note the position of the 3 adjustment windows (A,
Figures25 & 26) in the side of the brakeplate and the
nylock adjustment nuts (B}.
3. Insert a .016"-.018" (0,40-0,45mm) feelergauge (C,
Figure 26) through eachwindow, positioning the gauge
betweenthe rotor face andthe armature face asshown.
4. Alternatelytighten the adjustment nuts (B) until the
rotor face and armature face just contactsthe gauge.
5. Checkthe windows for an equal amount of tension
when the gauge is inserted and removed,and make any
necessaryadjustments by tightening or loosening the
adjustment nuts.
NOTE:The actualair gap betweenthe rotor and
armature mayvary evenafter performing the
adjustment procedure. This is due to dimensional
variations on component parts, and is an acceptable
condition.
6. Checkthe mower bladestopping time. Themower
bladesand mower drive belt should come to a
complete stop within five seconds after the electric PTO
switch is turned off.
Figure26: PTOclutch adjustment
A - Adjustment window
B - Adjustment nut
C-. 016"-.018" (0,40-0,45mm) feelergauge
BladeBrakeCheck(46 & 52" Models Only)
Mower bladesand mower drive belt should come to a
complete stop within five seconds after electric PTOswitch
is turned off.
1. With parking brakeengaged,PTOdisengagedand an
operator in the seat,start the engine.
2. Havean assistant observethe mower drive belt through
the opening betweenthe frame and top of mower deck.
Engagethe PTOand wait severalseconds. Disengage
the PTOand checkthe amount of time ittakes for the
mower drive belt to stop.
3. If the mower drive belt doesnot stop within five
seconds, perform the PTOClutchAdjustment. If the
belt still does not stop within 5 seconds, seeyour
dealer.
Figure25: PTOclutch
A - Adjustment window (3)
B - Adjustment nut
24
English
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