117. Spark Plugs
(8) Connect the two ignition leads (11) to the
magneto cover (9). Check connections
a. Removal.
and mounting screws for tightness.
(1) Disconnect the ignition cables (3, fig. 17)
from the spark plugs (1).
116. Batteries, Battery Box, and Cables a. Removal.
(2) Remove the spark plugs from the cylinder
(1) Pull the battery box (10, fig. 24) from the
heads (6).
stowed positioned beneath the hose reels
b. Cleaning, Inspection, and Repair.
on the unit.
(1) Clean the spark plugs.
(2) Disconnect the lead from the positive
(2) Adjust the gap between the spark plug
terminal (14) and the ground cable from
electrodes to 0.025 inch. Bend only the
the negative terminal (7).
outer electrodes to adjust the gap, do not
(3) Remove the four battery tiedown clamps
bend the center electrodes.
(16) by removing the four tiedown
(3) Test; replace if defective.
wingnuts (6) from the tiedown bolts (17).
(4) Replace any spark plug which is
(4) Remove the jumper cable (13) from the
mechancially damaged, has damaged
batteries (9).
threads, or burned electrodes.
(5) Remove the batteries from the battery
c. Installation.
box (10).
(1) Install the spark plugs (1) in the cylinder
b. Cleaning, Inspection, and Repair.
heads (6).
(1) Test each battery with a battery
(2) Connect the ignition cables (3) to the
hydrometer. All cells normally should test
spark plugs.
1.280 at full charge.
(3) Check connections for tightness.
(2) If a low reading is obtained on the
hydrometer, replace the battery.
118. Control Box
(3) Fill batteries with electrolyte until the level
a. Removal.
is 1/4 inch below the filler holes.
(1) Disconnect the two terminal leads (13 and
(4) Clean and tighten all battery connections.
Apply a thin coating of grease to terminal
removing the two cable nuts (12).
and connections to retard corrosion.
(2) Disconnect the choke control (16) at the
Install new connections if necessary.
carburetor (19, fig. 20) and from the
(5) Inspect and replace defective cables.
control bracket (21, fig. 25).
c. Installation.
(3) Disconnect the idle control (18) from the
(1) Install the two batteries (9) in the battery
carburetor (7, fig. 7) and from the control
box (10).
bracket (21, fig. 25).
(2) Install the jumper cable (13) to the two
(4) Remove the four cap nuts (2) which
batteries.
secure the central box to the mounting
(3) Install the four battery tiedown clamps
plate (24), and remove the control box
(16), by installing the four wingnuts (6) to
and gasket from the lubricating unit.
the battery tiedown bolts (17).
b. Disassembly.
(4) Connect the lead to the positive terminal
(1) Disconnect the lead (1, fig. 26) at the
(14) and secure the ground cable to the
starter switch (24) and at the terminal
negative terminal (7).
screws (2).
(5) Check all connections for tightness and
(2) Remove the two nuts (23) which secure
push the battery box (10) back into
the starter switch (24) to the back of the
stowed position under the hose reels of
control box, and remove the starter switch
the unit.
from the control box.
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