Specifications

Chapter 2 Fuel system and lubrication

Fig. 2.1

Carburettor

077A type

1 Gasket set

2 Needle valve assembly

3 Needle jet

4 Float assembly

5 Mixing chamber top

6 Float bowl assembly

7 Pilot and throttle stop screws

8 Throttle valve assembly

9 Carburettor complete

Rubber cap

Needle jet holder

Drain pipe

Clip

14 Main

jet

Pilot jet

6.1 Float bowl is retained by three screws - later type

6.2a Displace the float pivot pin to free the float assembly

3 Always err slightly on the side of a rich mixture, since a

weak mixture will cause the engine to overheat. Reference to

Chapter 3 will show how the condition of the spark plug can be

interpreted with some experience as a reliable guide to car-

burettor mixture strength.

9 Carburettor: (T)PFC type

1 CG125-C and E models are fitted with Honda's (Transient)

Power Fuel Control carburettor. This is an economy carburettor

designed to run on a weaker mixture, so reducing fuel consump-

tion. The (T)PFC system consists of an accelerator pump

mounted on the underside of the carburettor. It provides a richer

mixture during acceleration. A linkage depresses the pump rod

causing a metered quantity of fuel to be injected as the throttle

is opened.

2 Refer to Chapter 7 for details of overhaul and adjustment. 6.2b Take care not to lose the float needle!