TM 5-4310-227-15
(2) Inspect the flywheel for cracks, chips,
front of the cylinder and crankcase
nicks, and other damage. Inspect for
assembly.
defective air vanes.
(3) M a k e sure the timing marks are
on the air shroud (12) and secure
with the screws (26 ), lockwashers,
legible.
and nuts.
(4) Replace a damaged flywheel.
(f) Position the starter guard on the air
c. Installation.
shroud and secure with the screws
(1) Position the woodruff key (20) on
(3, fig. 3-16).
the engine crankshaft (18). Aline the
(g) Install the air shroud cover (see
flywheel (26) with the woodruff key
(3) below).
and install the flywheel on the crank-
shaft.
(2) Install the rim and screen .(para 3-
(2) Rim and screen.
(a) Secure the air shroud rim (4) and
a. Removal (Models OEG-458-ENG-1 and
screen (27) to the air shroud with
OEG-458-ENG-2).
the four screws (29).
(1) Remove the muffler (30, fig. 2-8)
from the pipe nipple (29).
(2) Remove the nipple from the cylinder
and crankcase assembly (19).
(3) Air shroud cover.
b. Removal (Model BMW-452-ENG and
(a) Position the stud spacer (6) on the
BMW-452ENG-1).
mounting stud (5) and secure the
(1) Loosen the screw that secures the muf-
cover (12) to the cylinder head (9)
fler rain cap (2, fig. 1-6) to the muf-
by tightening the screw (32).
fler and remove the rain cap.
(b) Install the nut (10) and flat wash-
(2) Remove the shield (10, fig. 1-6) from
er (11) that secure the cover to the
the muffler (17, fig, 3-17).
mounting stud (5).
(3) Remove the muffler (17) from the el-
b o w (16) by turning the muffler
counterclockwise.
(4) Loosen the locknut on the elbow (16)
and remove the elbow from the cylin-
a. Removal.
der and crankcase assembly. Remove
the locknut from the elbow.
(1) Remove the rim and screen (para 3-
c. Cleaning and Inspection.
(1) Clean all parts with an approved
(2) Remove the flywheel (6, fig. 3-12)
cleaning solvent and dry thoroughly.
from the engine crankshaft (5) by
(2) Inspect the muffler for holes, cracks,
tapping lightly on the front end of
and excessive rust.
the crankshaft with a soft metal ham-
(3) Inspect the nipple, dust cap, shield,
mer and, at the same time, exerting
locknut for damaged
elbow,
and
an outward pull on the flywheel air
t h r e a d s , cracks, excessive rust, or
vanes.
other damage.
( 3 ) Remove the woodruff key (20, fig. 3-
(4) Replace any defective parts.
18) from the crankshaft.
d. Installation (Models BMW-452-ENG
b. Cleaning and Inspection.
and BMW-452-ENG-1).
(1) Install locknut on elbow (16). Install
(1) Clean all applicable parts in an ap-
the elbow in the cylinder and crank-
c l e a n i n g solvent and dry
proved
case assembly.
thoroughly.
