Vanguard BIG BLOCK M540000 User Manual

Disassembly - Carburetor - Vanguard Model 540000
The Vanguard Model 540000OHV V-Twin utilizes a fixed jet,
two-barrel, side draft, flo-jet carburetor. Except for idle speed,
the carburetor is non adjustable. The carburetor incorporates
a fuel shut-off (anti-afterfire) solenoid that controls the flow to
the fuel metering system. The solenoid is controlled by the
ignition switch.
1. Remove the 2 float bowl fasteners (A, Figure 145).
Remove the float bowl (B)and discard the o-ring.
NOTE: The carburetor and float bowl may contain residual
gasoline. Drain any remaining gasoline into an approved
container and thoroughly wipe up any spilt fuel immediately.
2. Using a thin profile wrench, remove the anti-afterfire
solenoid (C) from the float bowl. Discardgasket ring.
NOTE: Care must be taken when removing the anti-afterfire
solenoid to prevent damage to the fixed main jet and housing.
3. Remove the main jet from the carburetor body.
4. Remove the float hinge pin, float (D) and needle.
5. Remove the emulsion tube body fastener and remove
the emulsion tube (E) and gasket. Discard old gasket.
6. Remove the 3 fasteners that secure the cover plate (F) to
the carburetor body. Remove the cover plate and discard
the gasket.
7. Remove the 2 fasteners that secure the choke plate (G)
to the choke shaft (H). Remove the choke plate and set
aside.
8. Remove the circlip and washer from the end of the choke
shaft, external to the carburetor body.
9. Remove the choke shaft from the carburetor body and
discard the seal.
10. Remove the fastener that secures the nozzle body (I) to
the carburetor. Remove the nozzle body and discard the
gasket.
11. Mark the throttle plates (J) before removal so that they
can be re-installed in the original position. The sides of
the throttle plates are beveled.
12. Remove the fasteners that secure the throttle plates
to the throttle shaft (K). Remove throttle plates and set
aside.
13. Remove the circlip and washer from the end of the
throttle shaft, external to the carburetor body.
14. Remove the throttle shaftfrom the carburetor body.
Discard seal.
113

Vanguard BIG BLOCK M540000 Specifications

General

Brand	Vanguard
Model	BIG BLOCK M540000
Category	Engine
Language	English