Grasshopper 721D User Manual

33
Yes
No
No
No
Yes
Steering levers
out, 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
PULL wire of
fuel solenoid to
ground?
Test in-line fuse
and fuse holder.
Does fuel
solenoid engage
while cranking?
Does
COMM
terminal of fuel
solenoid show
ground?
Repair ground
connection to
COMM terminal
of fuel solenoid.
No
Yes
Yes
This is an engine
related problem.
Consult engine
repair manual for
further
information.
Does resistance
measure
approximately .2
to .5 ohms from
PULL terminal to
COMM terminal
of fuel solenoid.
Replace fuel
solenoid.
Fuel solenoid
linkage is
binding or
sticking.
MODEL 718D and 721D
(Kubota diesel engines)
NOTES:
1. All tests are made with wires in
place on their respective
switches.
2. Refer to fuse block diagram for
terminal locations.
3. Refer to 'Troubleshooting
Control Relays' for information
on the diode and control relays.
4. If engine will crank, control relay
B cannot be the problem. This
means that the PTO switch,
right steering switch, and left
steering switch cannot be a
source of the problem.
ENGINE WILL CRANK, BUT NOT START
Figure 30
IN RUN POSITION
1
17
30
YE
2
4
HOLD
19
50
AC
-
+
3
COMM
RELAY A
PULL
TO SAFETY
SWITCHES
WH
GR
BK
STARTER
Battery Cable
FUEL
SOLENOID
FUEL
SOLENOID
MODULE
IGNITION
FUSE
MAIN
FUSE
KEY
SWITCH
RD
RD
RD
RD
RD
BK
BK
BK
BK
IN-LINE
FUSEHOLDER

Grasshopper 721D Specifications

General

Brand	Grasshopper
Model	721D
Category	Lawn Mower
Language	English