Textron JACOBSEN R-311 69166 - Key Switch Test; Horn;Test Switch Test

4-76 4203781 First Edition
ELECTRICAL
4
Key Switch Test
See Figure 4-40.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Remove key switch. (See “Key Switch” on
page 4-90.)
Figure 4-40
3. Turn key switch to the run position.
4. Check continuity between terminals (1, 3, and 4).
Is continuity indicated?
YES Proceed to step 5.
NO The key switch is faulty.
5. Turn the key switch to the start position. Check
continuity between terminals (1, 2, and 3).
Is continuity indicated?
YES The key switch is good.
NO The key switch is faulty; replace the switch.
Horn/Test Switch Test
See Figure 4-41.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Remove horn/test switch. (See “Horn/Test Switch” on
page 4-92.)
Figure 4-41
3. Connect test leads to the switch terminals (2 and 3).
4. Check for continuity.
Is continuity indicated?
YES The switch is faulty; replace the switch.
NO Proceed to step 5.
5. Depress and hold the plunger (1).
6. Check for continuity.
Is continuity indicated?
YES The switch is good.
NO The switch is faulty; replace the switch.
Required Tools or Equipment
Digital Multimeter, Ohmmeter, or Continuity Tester
X
Y
A
B
I
S
TN1892
1
2
3
4
Required Tools or Equipment
Digital Multimeter, Ohmmeter, or Continuity Tester
TN1968
3
2
1