Installation, Parts list – O.S. Engines 40C Carb - 25683000 User Manual

Page 4

INSTALLATION

After fitting the engine in the helicopter, please observe the following recommendations when linking the throttle servo to the
carburettor.

CORRECT-Throttle lever movement should be

disposed symmetrically, as shown

Locate the servo so that its output arm and the

throttle pushrod are. as closely as possible, di-
rectly in line with the carburettor's throttle arm, as
shown.

Fully closed

position

Note If differential throttle movement is required, make necessary
adjustment at the servo output arm, not at the throttle lever.

When the throttle is fully open or fully closed, the
throttle lever angle should not be more than 45° either
side of the mid-point of its travel (and where it is at a
90' angle to the pushrod), otherwise throttle rotor move-
ment may become inhibited or may even lock up.

Also, some lubricants may affect the throttle rotor
movement.

Please note that the throttle lever angles of the O.S.

Type 40C carburettor are well within these limits

-requiring only 75° from the fully open to fully closed

positions.

INCORRECT -One-way throttle lever movement should not
be more than 45° \

Use outer hole.

Fully open

position

PARTS LIST

Description

Throttle Lever

Throttle Lever Fixing Screw

Carburettor Rotor

Carburettor Body

"0" Ring

Rotor Spring

Rotor Guide Screw

Fuel Inlet

Needle Valve Assembly

Needle

"0" Ring

Set Screw

Needle Valve Holder

Ratchet Spring

Carburettor Gasket

Carburettor Fixing Screw

The specifications are subject to alteration for improvement without notice.

6-15 3-Chome Imagawa Higashisumiyoshi-ku

Osaka 546-0003, Japan TEL. (06) 6702-0225

FAX. (06) 6704-2722

22781 410

2 2781 420

2 5683 200

25683100

2 4881 824

2 6781 506

4 5581 820

2 2681 953

2 7881 900

2 4981 959

2 4981 837

2 6381 501

2 7381 940

2 6711 305

46215000

2 5081 700

60130340-19907