Vanguard OHV V-Twin User Manual page 13

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Fig. 8
Final Adjustment
All carburetor adjustments performed with the en-
gine running must be made with the air cleaner
installed.
• Tools Required, Fig. 9:
Tachometer #19200 or #19389
Tang Bender #19352
1. Start engine. Run for approximately 5 minutes to
allow engine to warm up.
2. Move control lever on equipment to SLOW
position.
19200
19352
Fig. 9
3. Hold throttle lever (2) against idle speed screw
(1), Fig. 10. Temporarily adjust idle to RPM
shown below.
a. 1400 RPM – Governed Idle Spring #805453
(RED).
b. 1100 RPM – Governed Idle Spring #805454
(WHITE).
12
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4. Turn idle mixture screw slowly CLOCKWISE (1)
5. Then turn idle mixture screw COUNTER-
6. Turn screw to mid point (2) between RICH and
19389
7. Hold throttle lever against idle speed adjustment
8. Release throttle lever. Note RPM.
9. If necessary bend governed idle tang (5) with
Ì Ì Ì Ì
Ì Ì
‚
Fig. 10
until engine speed just starts to slow (LEAN
mixture), Fig. 11.
Ì Ì Ì Ì Ì Ì
Ì Ì Ì Ì Ì Ì
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Fig. 11
CLOCKWISE (3) until engine speed just starts to
slow (RICH mixture).
LEAN.
screw and re-adjust idle to RPM shown below:
a. 1200 RPM – Governed Idle Spring #805453
(RED).
b. 900 RPM – Governed Idle Spring #805454
(WHITE).
Tang Bender #19352 (4), Fig. 12, to obtain RPM
shown:
a. 1750 RPM – Governed Idle Spring #805453
(RED).
b. 1100 RPM – Governed Idle Spring #805454
(WHITE).
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