TM 5-3655-210-12
Malfunction
Test or Inspection
Corrective Action
another wrench until the correct
clearance is obtained. A slight drag
should be felt as the feeler gage is
moved back and forth.
Step 3. Test and inspect spark plugs as follows:
a Use a feeler gage and see if plugs have the
proper gap. Plugs should indicate an 0.030 in.
(.0762cm) gap.
and spark plugs (1). Visually inspect plugs for
carbon, corrosion and excessive dirt deposits.
c. Test spark plugs by holding the plug about
1/4 in. (0.63cm) away from cylinder head. A
bright blue spark should jump from the tip of
plug to the cylinder head.
Clean, adjust or replace the spark plugs as
follows:
a, Clean by sand blasting.
b. Adjust plug by bending the electrode up
or down as necessary until 0.030 in. feeler
gage fits the gap.
1. Screw
2. Screen
TS 024534
c. Install new plugs (1, fig. 4-8) and secure
Figure 4-10. Flywheel screen, removal.
with nuts (2).
1. Running spark advance mark
2. Flywheel nut
Figure 4-11. Flywheel timing marks
4-14
