40
Yes
No
No
Yes
No
Yes
Yes
Steering levers
out and PTO
switch 'ON'.
Voltage tests
are performed
with a voltmeter
or test light to
battery ground.
Key switch in the
'RUN' position,
but
engine is
not running
.
Does voltage
appear from
terminal 'E' of
PTO fuse to
ground (figure
39)?
Key switch or
wiring from key
switch to PTO
fuse is defective.
Does voltage
appear from
terminal 'F' of
PTO fuse to
ground?
Replace PTO
fuse.
Does voltage
appear from
brown wire at
PTO clutch plug
to ground?
Replace PTO
switch.
Does green wire
of PTO clutch
show ground?
Test ground
connections on
clutch.
No
Test PTO clutch
and terminals.
Verify air gap of
.012" on electric
clutch. (see
owner's manual.)
Test clutch by
reading ohm's
across clutch
plug (plug
disconnected).
Resistance
should measure
approximately
2.3 to 2.7 ohms.
TROUBLESHOOTING PTO CLUTCH
MODEL 612, 614, 616, 718,
718K and 720K
Figure 39Figure 38
NOTES:
1. To see the wiring diagram for
models with serial numbers of
340725 and higher, refer to
figure 44 on page 44.
-
+
CLUTCH
RD
IN RUN POSITION
PTO ON
PTO
SWITCH
KEY
SWITCH
BK
BR
BR
GR
PTO
FUSE
M
B
S
G
L
LIGHT
PTO
START
REG.
30
7.5
7.5
7.5
AB
C
E
G
D
F
H
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