TM 10-4930-204-13
(3) Insert stop pin (30) and rotor (29) in housing (35) and
install bearing (28), support (27), and screw (26).
(4) Install ring (25), washer (24), seal (23), washer (22),
coupling assembly (21), spring (20), hub assembly (19), bearing (18),
key (17), gear (16), nut (15), and connect wire (14).
(5) Install contact assembly (13), camwick holder (12),
screw (11), ring (10), washer (9), and screw (8).
(6) Install capacitor (7) and secure with washer (6) and
screw (5).
(7) Install gasket (4), outlet (3), cover (2), and secure
with screws (1).
e.
Installation.
Install magneto (para 4-24f.).
5-12.
VALVES, VALVE SEATS, GUIDES AND SPRINGS.
a.
Removal and Disassembly.
(1) Remove carburetor, muffler, tappet inspection plate,
and cylinder head (para 4-24).
(2) Remove locks (1, fig. 5-2), spring seat (2 and 7), and
springs (3 and 8) from crankcase (12).
(3) List intake valve (4) and exhaust valve (9) from engine
and remove guides (5) and tappets (6).
(4) Remove cups (10) and inserts (11).
b.
Cleanin g, Inspection and Repair.
Drycleaning solvent normally has a flash point
of either 100 or 138 degrees F, depending on the
type being used, but may flash at much lower tem-
peratures if contaminated with gasoline or jet
fuel.
Avoid repeated and prolonged skin, contact.
Do not use near open flame or excessive heat.
(1) Clean valves with wire brush to remove all carbon de-
posits.
Clean valve seats, ports, and guide in cylinder block; clean
top of cylinder block.
Wash springs with drycleaning solvent (item 1,
App . F), and dry thoroughly.
(2) Inspect valves for burned, pitted, or cracked faces;
replace burned, cracked or deeply pitted valve.
5-5
