Mazda MX-5 1990 Workshop Manual page 220

F
F-76
ENGINE TUNE-UP
05UOFX-062
05UOFX-065
4. If the marks are not aligned, loosen the crank angle sensor
lock bolt, and turn the crank angle sensor to make the ad-
justment.
5. Tighten the crank angle sensor lock bolt to the specified
torque.
Tightening torque:
19-25 N·m (1.9-2.6 m-kg, 14-19 ft-Ib)
6. After adjusting the ignition timing, disconnect the SST or
jumper wire from the diagnosis connector.
7. Increase the engine speed and verify that the ignition tim-
ing advances.
Idle Speed
1. Connect the SST and set the TEST SW to "SELF TEST"
or connect diagnosis connector terminals TEN and GND
with a jumper wire.
2. Verify that the idle speed is within specification.
Idle speed: 850
±
50 rpm
3. If the idle speed is not within specification, remove the blind
cap from the air adjusting screw and adjust it.
4. After adjusting the idle speed, install the blind cap and dis-
connect the SST or jumper wire from the diagnosis con-
nector.