John Deere 318 - Manual (Page 323)

2c
Starter Test—
For Machines:
316 (SN 362984— )
318 (SN 364138— )
420 (SN 360010— )
PTO switch OFF.
Key switch OFF.
Hydrostatic lever in
N/STOP position.
Park brake engaged.
Disconnect spark plug
wires from spark plugs
and ground to engine
block.
M77929 -UN-17JAN95
Connect one end of a
jumper wire to terminal
(A) on the starter
solenoid, then briefly
touch other end of
jumper to battery cable
terminal (B).
LISTEN: Starter must
operate.
STARTER OPERATES:
GO TO
2e
STARTER DOESN’T
OPERATE: GO TO
2d
2d
Starter Solenoid
Test—For
Machines:
316 (SN 362984— )
318 (SN 364138— )
420 (SN 360010— )
PTO switch OFF.
Key switch OFF.
Hydrostatic lever in
N/STOP position.
Park brake engaged.
Spark plug wires
disconnected and
grounded.
M77930 -UN-17JAN95
Briefly jump between
starter terminal (A) and
battery cable terminal
(B), located on the
starter solenoid,
LISTEN: Starter must
operate.
STARTER OPERATES:
Replace solenoid, then
GO TO
‘
, Group 05.
STARTER DOESN’T
OPERATE: Check
battery and starter
wiring connections, then
GO TO
Æ
, Group 25.
2e
Starter Circuit
Test at Key Switch
PTO switch OFF.
Hydrostatic lever in
N/STOP position.
NOTE: Engaged park
brake required on
machines:
316 (S.N. 596121— )
318 (S.N. 600305— )
420 (S.N. 595881— )
Engage park brake.
M37167 -UN-25JAN90
Turn key switch to RUN
position.
Check for voltage at
terminal (A) on back of
key switch (purple and
purple/black wires).
VOLTAGE: Replace
key switch, then GO
TO
‘
, Group 05.
NO VOLTAGE:
Early machines, GO TO
2g
Later machines, GO TO
2f
MX,159024025,32-19-16MAY95
MX,159024025,33-19-16MAY95
MX,159024025,34-19-16MAY95
Electrical System Diagnosis/Starting Circuit Tests
TM1590 (17MAY95)
240-20-11
316, 318 & 420 Lawn and Garden Tractors
020895
240
20
11