Alternator.

TM 55-4920-405-13&P

(a) Disconnect the ignition wires from the

side of the engine gear cover.

spark plugs.

(b) Disconnect the leadwire from the high

( 1 2 ) Alternator. To install alternator stator

temperature safety switch terminal.

(11, figure 4-8), proceed as follows:

screen into position over the end of

the crankshaft.

(a) Slide the alternator stator over the

(d) Attach cylinder heat deflectors (15)

crankshaft, and attach it to the engine

gear cover with 4 screws and 1 roll

and lower cylinder shrouds (14) to

the flywheel shroud with screw and

pin.

lockwashers.

(b) Attach the voltage regulator and the

(e) Thread the leadwire for the high tem-

rectifier module to the engine gear

perature safety switch through the

cover with two screws and lock-

grommet in the cylinder heat deflec-

washers each.

tor. Connect the leadwire to the high

temperature safety switch terminal.

leadwires to the corresponding con-

(f) Install rear shroud covers (13) on the

nectors on the voltage regulator and

lower cylinder shrouds and cylinder

the rectifier module.

heat deflectors with screws and

(d) Connect the ammeter leadwire (green)

lock washers.

to the charge side of AMMETER (3,

figure 2-1).

(g) put cylinder head shrouds (16) in

position. Install screws and lock-

(13) Flywheel. To install flywheel (12, figure

washers to attach the cylinder head

shrouds and the clamps on the ignition

4-8), proceed as follows:

wires.

(a) Position the key in the keyway on the

(18) Magneto. To install magneto (1, figure

crankshaft.

4-5), proceed as follows:

(b) Carefully slide the flywheel onto the

crankshaft over the key. Carefully

Remove the screen over the flywheel

fit the rotor portion of the alternator

(a)

air intake to expose the timing marks

over the stator portion.

on the flywheel and shroud. (See fig-

ure 4-27.)

Remove the number 1 spark plug.

(b)

( 1 4 ) Cover Plate. To install cover plate (20,

Hold your finger over the spark plug

figure 4-8), proceed as follows:

hole and turn the engine over with a

handcrank.

(a) Install a new cover plate gasket.

(c)

When you feel air blowing out of the

(b) Attach the cover plate to the crank-

spark plug hole, continue turning the

case assembly with the cover plate

engine until the flywheel mark is lined

mounting screws and lockwashers.

up with the air shroud mark.

Connect the ignition wire for the num-

(d)

(15) High Temperature Safety Switch. To in-

ber 1 spark plug to the number 1 con-

stall high temperature safety switch (2,

nection on the magneto. Hold the other

figure 4-8), proceed as follows:

end of the same ignition wire about

1/8 inch from the magneto body.

(a) Attach the high temperature safety

Turn the magneto gear clockwise until

(e)

switch to the cylinder head with one

you see a spark at the end of the igni-

capscrew and washer.

tion wire. Hold the magneto gear at

(b) Connect the wire assembly to the

the position where you saw the spark.

terminal of the high temperature

Attach the magneto to the engine with

(f)

safety switch. Make sure that the

the attaching bolts, lockwashers. and

other end of the wire assembly is con-

nuts. Be careful to see that the gears

nected to engine ground.

mesh before you tighten the bolts.

Connect the remaining three ignition

(16) Spark Plugs. To install a spark plug (1,

(g)

wires to the correct numbered ter-

figure 4-8), proceed as follows:

minals of the magneto.

Attach the IGNITION SWITCH wire to

(h)

(a) Insert the spark plug into the threaded

the top rear of the magneto with one

opening on the cylinder head.

screw.

(b) Tighten the spark plug to 25 to 30

Connect the ground strap to the mag-

(i)

foot-pounds

torque.

neto with one screw and washer.

plug. Make sure that you do not inter-

d . Miscellaneous Parts.

change ignition wire connections.

(1) Brake Drum and Hub. To replace a brake

drum and hub (12, figure 3-6), proceed as

(17) Shrouding. To install the shrouding on

follows:

the engine, proceed as follows:

4-43