O.S. Engines 3H Carb - 22981000 - Manual (Page 4)

4. Remove needle from needle-valve assembly, followed by
hexagonal retaining nut and ratchet spring. Now push
nozzle unit through body from outside.
5. Remove fuel inlet nipple.
6. Immerse parts in solvent (e.g. gasoline, alcohol or carbon-
tetrachloride) and clean thoroughly.
7. Re-assemble in reverse order. Note that periphery of
nozzle flange is specially shaped to key into carburettor
body.
Note:
This carburettor is fitted with a short tubular seal (2.5 mm
bore, 5.0 mm outer dia., 7 mm length) between the needle
and body to prevent air leakage into, or fuel leakage from,
the needle-valve. When the seal becomes worn or damaged
after a long period of use, replace with the spare seal pro-
vided, or cut a short piece of silicone fuel tubing as a replace-
ment.
PARTS LIST
Description
Throttle lever assembly
Throttle lever assembly
Throttle lever fixing screw
Throttle lever
Throttle lever
Mixture control screw
"0" ring
Throttle rotor
Rotor spring
Carburettor body
Throttle stop screw (w/nut)
Nipple ( w / w a s h e r )
Carburettor rubber gasket
Carburettor fixing screws
Needle valve assembly
Needle
Set-screw
Nozzle assembly
Ratchet spring
"0" ring
c°,8=]-h
Code No.
22981400
22781401
22781420
22981410
22781411
22981600
22781800
22981200
22481506
22981100
22681306
22681953
22615000
23081706
22981900
45181973
26381501
22981960
22611302
24881824
The specifications are subject to alteration for improvement without notice
6-15 3-chome Imagawa H i g a s h i s u m i y o s h i - k u
Osaka 546, Japan T E L (06) 702-0225
FAX (06)704-2722
© Copyright 1992 by O.S. Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan.
109301