Ignition Timing: Adjustments

Before checking or adjusting ignition timing be sure:
Engine coolant temperature is at operating temperature, 85-95°C (185 - 205°F)
Lights, electrical accessories, and cooling fan are OFF
Transaxle is in Neutral
Front wheels are in a straight-ahead position.
Parking Brake is set

1. Connect a timing light to the number one cylinder according to manufacturers instructions.

Ignition Timing Adjustment Connection:

2. Insert a paper clip into the back side of the engine tachometer terminal and connect a tachometer to the paper clip.
Caution
^ The connector should not be disconnected.
^ The paper clip should be inserted carefully. If it is inserted incorrectly, the paper clip may become caught and cannot be removed without damaging the connector.
3. Start and run the engine at idle. Ensure idle speed is set to specifications.

Timing Adjustment Connection:

4. With the engine stopped, disconnect the ignition timing adjustment terminal. Using a lead wire with alligator clips ground the terminal.
5. Start and run the engine at idle.

Timing Mark:

6. Aim the timing light at the timing mark and check basic ignition timing.
Refer to SPECIFICATIONS.

Basic Ignition Timing Adjustment:

If timing is not within specification, loosen the crank angle sensor mounting nut and adjust by turning the crank angle sensor.
After adjustment, tighten the nut being careful not to move the Crank angle Sensor.

7. Stop the engine.
8. Disconnect the lead wire and remove the paper clip.
9. Start and run the engine at idle.
10. Recheck ignition timing to ensure that it advances from basic to actual timing.
Refer to SPECIFICATIONS.
NOTE:
^ Actual ignition timing may vary, depending on the control mode of the Engine Control Unit.
^ At altitudes more than 700 meters (2,300 feet) above sea level, the ECU may further advance the actual ignition timing.