Ignition Timing: Adjustments
CHECKING IGNITION TIMING AND IDLE SPEEDChecking Idle Speed
METHOD A (With pulse type tachometer)
1. Clamp loop wire as shown.
METHOD B (With voltage type tachometer)
1. Disconnect check connector for tachometer.
2. Connect tachometer using suitable tool.
Idle speed: (in "D" position)
M/T: 80O ± 50 rpm
A/T: 700 ± 50 rpm
If idle speed is not within specific value, refer to MIXTURE RATIO FEEDBACK SYSTEM INSPECTION.
Checking Ignition Timing
Ignition timing: 15° ± 2° B.T.D.C.
If ignition timing is not within specific value, adjust ignition timing as shown.
METHOD A (Without S.S.T.)
1. Disconnect air duct and air hoses.
2. Remove ornament cover.
Acceleration wire does not need removing.
3. Remove No.1 ignition coil.
4. Connect No.1 ignition coil and No. 1 spark plug with suitable high-tension wire as shown, and clamp this wire with timing light clamp.
For the above procedure, enlarge suitable high-tension wire end with insulating tape as shown.
5. Connect air duct and air hoses, then start engine. Check ignition timing.
6. Install No. 1 ignition coil and ornament cover, and connect air duct and air hoses.
METHOD B (With S.S.T. KV1O9D1OSO)
1. Disconnect connector of power transistor unit.
2. Connect S.S.T. and clamp wire as shown.
Align direction marks on S.S.T. and timing light clamp if aligning mark is punched.