11.10
Battery and Electrical Systems
TPS Idle Speed Adjustment - CFI Models
1. Verify the TPS voltage is 0.70 +/- 0.01 Vdc with the
throttle plates closed.
2. Slowly turn the idle speed adjustment screw (A) clockwise
until the voltage displayed on the multi meter reads 0.95 +/
- 0.1 Vdc (.93 +/- 0.1 Vdc for 800 CFI engines).
3. Carefully tighten the lock nut (B) while maintaining the
voltage setting.
4. Reinstall the throttle cable, then install the throttle body
back on to the engine.
Throttle Plate Synchronization
The throttle plates are synchronized at the time of throttle body
manufacture. Adjustment should never be required unless it is
believed the plates are out of sync.
To adjust throttle plate synchronization, follow these steps:
1. Perform the TPS Baseline Adjustment. The TPS must be
set to specification.
2. Carefully back the synchronization screw out so it no
longer touches the tab, but do not remove the screw or the
spring.
3. Verify the TPS voltage is set to 0.70 +/- 0.01 Vdc. If it is
not, re-perform the baseline adjustment.
• A = Synchronization Screw
• B = Throttle Arm Tab
• C = Screw Mount
4. Slowly turn the synchronization screw inwards until the
instant the voltage on the multimeter changes. Back the
screw out so the voltage reads 0.70 +/- 0.01 Vdc.
NOTE: When turning the synchronization screw, do
not push the screwdriver with enough force to move
the throttle cable cam. Doing so will affect the TPS
voltage reading on the multimeter.
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