Main jet (A), jet holder (B) and pilot jet(C)

ensuring the needle is correctly aligned with the jet (see illustration).

12Align the tab on the diaphragm with the recess in the carburettor body, then press the diaphragm outer edge into its groove, making sure it is correctly seated and that the tab locates in the recess around the air hole (see illustration 7.4).Check the diaphragm is not creased, and that the piston moves smoothly up and down in its guide.

13 Install the spring into the needle holder (see illustration).Fit the top cover to the

8.6 Carburettor float pin (A) and float valveseat (B)

leasuring floatheight

Ensure that needle (A) is aligned with jet (B) when fitting piston assembly

Install the spring into the needle holder

4»10 Fuel and exhaust systems

H32284

mmu

imnp

Carburettor assembly

1 Choke linkage bar

2 Choke cable clamp

3 Throttle cable bracket

4 Lower joining stud

5 5 mm nuts

6 Upper joining stud

7 6 mm nuts

8 Synchronising screw

9 Synchronising screw springs

10 Joining stud spacers

11 Sub-air cleaner joint

12 Breather joint

13 Fuel joint pipe

14 Idle speed adjuster

15 Throttle linkage spring

carburettor, making sure the top end of the spring locates into the centre recess inside the cover, and aligning the protrusion on the cover with the tab on the diaphragm (seeillustration 7.3). Tighten the cover screws securely. 14 Install the carburettors (see Section 6).

9 Carburettors -

separation and joining

Warning: Refer to the precautions given in Section 1 before proceeding

Separation

1 The carburettors do not need to be separated for normal overhaul. If you need to separate them (to fit a new carburettor body, for example), refer to the following procedure (see illustration).

2Remove the carburettors (see Section 6). Mark the body of each carburettor with its cylinder location to ensure that it is positioned correctly on reassembly.

3 Unscrew the heater hose union retaining screws and detach the unions, noting how they fit against the carburettor bodies (see illustration 7.2).

4Remove the screws and washers securing the choke plunger linkage bar to the carburettors. Lift off the bar and remove the collars and the return spring, noting how they fit (see illustrations 7.13a, b, c, d and e).

5Alternately loosen the nuts on the left-hand

end of the threaded studs which join the carburettors together. Remove the nuts and withdraw the studs (see illustration).6 Make a careful note of how the carburettor synchronising screw springs and throttle

Date: 2016-01-14; view: 661