28
Yes
No
OK
No
Yes
continues on
next page
A
Test battery for
condition and
charge.
Steering levers
out and PTO
switch 'OFF'.
Voltage tests
are performed
with a voltmeter
or test light to
battery ground.
Key switch is
held in 'START'
position for each
test until
otherwise noted.
Does voltage
appear from
terminal 'I' of
start fuse?
Problem is the
key switch or
the power to the
key switch.
Does voltage
appear from
terminal 'J' of
start fuse?
Replace start
fuse.
Does voltage
appear on blue
wire at starter
solenoid.
No
Yes
Check starter
solenoid.
Problem could
be starter
solenoid or
starter.
MODEL 718D, 721, 721D, and
725
(All Kubota engines)
ENGINE WILL NOT CRANK
Figure 21
NOTES:
1. To see the wiring diagram for
models with serial numbers of
340725 and higher, refer to
figure 43 on page 43.
AC
50
19
30
17
BU
YE
RD
GR
+
-
STARTER
IN START POSITION PTO OFF STEERING LEVERS OUT
START FUSE
RELAY B
PTO
SWITCH
LEFT
STEER
RIGHT
STEER
KEY
SWITCH
LT
STR
RT
STR
YE
YE
BU
BU
BU
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