Performance Controle Engines - Vanguard OHV V-Twin User Manual

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Fig. 12
10. If the carburetor is equipped with an idle mixture
limiter cap install it at this time.
a. Position limiter cap (7) so that stop(s) on
limiter cap are at mid point between stop(s)
on carburetor body, Fig. 13.
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Fig. 13
b. Press limiter into position using Knock Out
Pin, #19135 (6) as shown.
11. With equipment control lever in SLOW position
and engine running at governed idle, use Tang
Bender, #19352 (9), to bend throttle restrictor
tang (8) so that tang just contacts governor lever
(10), Fig. 14.
12. Move equipment control to FAST position.
Engine should accelerate smoothly.
Re-adjust idle mixture valve 1/8 turn richer if
necessary.
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Fig. 14

Performance ControlE Engines

NOTE: All carburetor adjustments with engine
running must be made with the air cleaner
correctly installed.
1. Start engine and run it for approximately 5
minutes to allow engine to reach operating
temperature.
2. Activate idle down device, or ground BLUE wire
(1) from control module using a jumper wire (2),
Fig. 15.
3. Temporarily adjust idle speed to 1400 RPM.
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Fig. 15
4. Turn idle mixture screw slowly CLOCKWISE (3)
until engine speed just starts to slow (LEAN
mixture), Fig. 16.
5. Then turn idle mixture valve COUNTERCLOCK-
WISE (5) until engine speed just starts to slow
(RICH mixture).
6. Turn valve to mid point (4) between RICH and
LEAN.
7. Re-adjust idle speed to 1750 RPM.
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