272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

NOTE: If idle mixture screws are equipped with
adjustment limiter caps, remove the caps
(18) BEFORE removing idle mixture
screws, inset, Fig. 65.
Fig. 67
Fig. 65
10. Mark throttle plates (24) before removing to
ensure reinstallation in the original position,
Fig. 66.
11. Remove throttle shaft (22), spacer (21) and seal
(23).
NOTE: Do not remove throttle shaft welch plug.
Clean Carburetor
1. Disassemble carburetor.
2. Remove and discard all old gaskets, seals and
sealing material.
CAUTION
AVOID INJURY!
• Wear suitable protection when using cleaners.
Follow instructions on container.
3. Use a commercial carburetor cleaner (such as
Briggs & Stratton Spray Cleaner, Part #100041
or #100042) to clean carburetor parts and body.
4. When cleaning non-metallic parts (plastic, nylon,
Minlon, etc.), do not leave in commercial
carburetor cleaner more than 15 minutes.
NOTE: Do not use commercial carburetor cleaners
on parts containing rubber, such as seals,
O-rings, inlet needles, seats or pump
diaphragms.
CAUTION
AVOID EYE INJURY!
Fig. 66
12. Mark choke plate (26) before removing to ensure
reinstallation in the original position,
Fig. 67.
13. Remove choke shaft (27) and seal (28).
This completes the carburetor disassembly
procedure.
• Wear eye protection whenever using compressed
air to clean parts.
5. Use only compressed air (blowing in both
directions) to clean out all openings and
passages.
NOTE: Do not use wire, drills or other mechanical
devices to clean out metering holes or
passages.
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