TM 5-3895-342-12
g. Installation. Install the magneto in reverse
(5) Check spark plug gap. Correct gap is
of the instructions in sub paragraph a above.
.030 inch.
4-25. Spark Plugs and Leads
(6) Test spark plug with a suitable tester.
a. Removal. Remove the spark plugs and
Replace defective spark plugs.
leads as instructed on figure 4-21.
c. Installation. Install spark plugs and leads in
reverse of instructions on figure 4-21. Tighten
spark plugs to 25 to 30 foot pounds torque.
4-26. Hi-Temperature Safety Switch
a. Removal. Remove
the
hi-temperature
safety switch as instructed on figure 4-22.
1. LOOSEN NUT AND DISCONNECT CABLE (4).
2. REMOVE SPARK PLUGS (4).
ME 3895-342-12/4-21
Figure 4-21. Spark plugs and leads removal.
1. DISCONNECT LEAD FROM SAFETY SWITCH
b. Cleaning and Inspection.
AND FROM MAGNETO.
(1) Clean the spark plug leads with a cloth
2. REMOVE CAPSCREW AND WASHER AND
dampened in cleaning solvent and dry thoroughly.
SWITCH.
(2) Clean the spark plug electrodes by
ME3895-342-1 2/4-22
sand- blasting.
Figure 4-22. Hi-temperature safety switch and lead
(3) Inspect the spark plug electrodes for
removal.
burned or tapered condition. Replace defective
spark plugs.
b. Cleaning and Inspection.
(4) Inspect the spark plug lead sheeting for
(1) Clean all parts with a cleaning solvent.
cracks, breaks, or corrosion. Replace defective
(2) Inspect the switch for damage or
leads.
corrosion. Replace a defective switch.
c. Installation. Install the hi-temperature safety
switch in reverse of instructions on figure 4-22.
SECTION X. FUEL SYSTEM
.
air cleaner removes dirt and grit from the air,
4-27. General
passing clean air to the carburetor where it is mixed
The mixer is equipped with a gravity type fuel
with the fuel for proper combustion.
system. The fuel system consists of a fuel tank, air
4-28. Air Cleaner
cleaner, fuel strainer and shut-off valve, carburetor,
and governor. Fuel flows from the fuel tank into
a. Removal. Remove the air cleaner as
the fuel strainer where dirt and water in the fuel is
instructed on figure 4-23.
intercepted into a removable sediment bowl. From
the strainer the fuel flows into the carburetor. The
4-15
