Ignition Timing: Testing and Inspection

IGNITION TIMING INSPECTION AND ADJUSTMENT
1. WARM UP ENGINE.
- Allow the engine to warm up to normal operating temperature.

2. CONNECT TACHOMETER AND TIMING LIGHT TO ENGINE.



- Connect the tester probe of a tachometer to terminal IG- of the DLC1.

NOTE:
- Never allow the tachometer terminal to touch ground as it could result in damage to the igniter and/or ignition coil.
- As some tachometers are not compatible with this ignition system, we recommend that you confirm the compatibility of your unit before use.

3. CHECK IDLE SPEED.



(a) Race the engine speed at 2,500 rpm for approx. 90 seconds.



(b) Release the throttle, then check the idle speed.

Idle speed: 650 ± 50 rpm

4. CHECK IGNITION TIMING.



(a) Using a jumper wire or special service tool (SST 09843-18020), connect terminals TE1 and E1 of the data link connector (DLC1).



(b) Open the igniter connector cover and remove the green lead wire.



(c) Using a timing light that can detect the primary signal, connect the pick-up clip to the green lead wire.

The Crankshaft Rotates In A CLOCKWISE Direction, When Viewed From The Pulley End Of The Engine.:

(d) Using the timing light, check the ignition timing.

Ignition timing: 10° BTDC ± 2° @ idle
(Transmission in neutral position)

(e) Remove the jumper wire (or SST) from the DLC1.

NOTICE: Ignition timing is not adjustable on this model. If the ignition timing is not as specified, check the camshaft timing.

5. FURTHER CHECK OF IGNITION TIMING.



- With the jumper removed from DLC1 the timing mark will move in a range between 10° and 20° BTDC.

Ignition timing: 10° - 20° BTDC @ idle
(transmission in neutral position)

6. DISCONNECT TACHOMETER AND TIMING LIGHT FROM ENGINE.
- Make sure the green lead wire is stored inside the igniter connector cover.