TM 5-3740-214-14
Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE DOES NOT START BUT TURNS OVER (Continued)
(5)
Hold a screwdriver point across the open breaker points.
(6)
Remove the screwdriver from the breaker points.
(7)
If a bright blue spark jumps between the wire and the engine, the coil is ok. Go to Step 7.
(8)
If there is no spark or the spark is weak and yellow, the coil is weak. Replace the coil and go to
Step 6e, if the condenser and the points check ok.
Figure 5-34. Coil Test I
c. Coil Test I. Check the primary coil winding. Use a volt-ohmmeter.
(1)
Remove the breaker point cover and jam a piece of cardboard between the breaker points.
(2)
Turn the ignition switch ON.
(3)
Connect the negative (-) meter lead to a grounded part of the engine.
(4)
Connect positive (+) meter lead to the battery (+) side of the coil. If the meter reads 11.5 to 12
volts, there is current to the coil. Go to Step 6c. (5). If the meter reads 11.5 volts or less, there
is poor current to the coil. Go to Step 6d.
5-30
