Sears Craftsman ZT 7000 Manual Del Dueño página 22

CHECK / ADJUST PTO CLUTCH
WARNING
To avoid serious injury, perform adjustments only
with engine stopped, key removed and tractor on
Jevet ground.
Service lntervaJ: 200 Hours.
The PTO dutch is engaged and disengaged by the PTO
switch. The dutch powers and brakes the mower blades.
Check the PTO dutch adjustment every 200 hours of
operation. Also pedorm the foflowing procedure if the
dutch is slipping, wifl not engage, or if a new dutch has
been instafled.
1. Remove key from ignition switch and disconnect
spark plug wires to prevent the possibility of acciden-
tal starting while the PTO is being adjusted.
2. See Figure 22. Note the position of the 3 adjustment
windows (A) in the side of the brake plate and the
nylock adjustment nuts (B).
3. insert a .012"o.015" (2,5°4mm) feeler gauge (C)
through each window, positioning the gauge between
the rotor face and the armature face as shown in
Figure 23.
4. Alternately tighten the adjustment nuts (B, Figure 22)
until the rotor face and armature face just contacts
the gauge.
5. Check the windows for an equal amount of tension
when the gauge is inserted and removed, and make
any necessary adjustments by tightening or loosen-
ing the adjustment nuts.
NOTE: The actual air gap between the rotor and arma-
ture may vary even after performing the adjustment pro-
cedure. This is due to dimensional variations on compo-
nent parts, and is an acceptable condition.
6. Check the mower blade stopping time. The mower
blades and mower drive belt should come to a com°
plete stop within five seconds after the electric PTO
switch is turned off. if adjustment does not stop a
mower braking problem, replace the electric PTO
clutch.
Figure 22. PTO Clutch Adjustment
A. Adjustment Window (Qty. 3, one shown)
B. Adjustment Nut
...... iiiii I
Figure 23. Adjust PTO Clutch
A. Window
B. Adjustment Nut
C. Feeler Gauge
22