Contents: Every 10,000 km or every 6 months,…⇓ Every 20,000 km or every 12 months,…⇓ Every 40,000 km or after 24 months,…⇓ Adjusting the drive belt ⇓ Idle speed, checking and adjusting…⇓ Checking and adjusting the ignition…⇓ Checking the rear disc brake ⇓ Checking and adjusting the shock…⇓ Replacing the fuel filter (EG1…⇓ Replacing the air filter element…⇓ Replacing the wiper blade ⇓
Every 10,000 km or every 6 months, whichever comes first
- Check and adjust (if necessary) idle speed and mixture (EGI engine)
- Check and adjust (if necessary) ignition timing angle (EGI engine)
- Check the rear disc brakes
Idle speed adjustment
Every 20,000 km or every 12 months, whichever comes first
- Check and adjust (if necessary) throttle damper (EGI engine)
Every 40,000 km or after 24 months, whichever comes first
- Replace the fuel filter (EGI engine)
- Replace the air filter element (EQI engine)
Adjusting the drive belt
1. On later models, there is no idler pulley to adjust the drive belt tension, all adjustment is done by moving the generator or air compressor. The deviation dimensions are given in the Specifications.
Idle speed, checking and adjusting the mixture (EGI engine)
2. Apply the parking brake and place the gear shift lever in neutral.
3. Connect the tachometer to the engine and turn off all electrical devices.
4. Start the engine and warm it up to normal temperature, then increase the engine speed to 2500-3000 rpm and hold it for three minutes.
5. Stop the engine and connect the exhaust gas analyzer to the muffler outlet pipe.
6. Start the engine at idle speed. If the electric cooling fan is running, wait until it stops.
7. Check that the idle speed is within the specifications. If not, turn the air adjustment screw (photo) as needed.
Idle speed adjustment (EGI engine)
8. To adjust the mixture, first disconnect the air injector hoses from the air filter and plug them.
9. Warm up the engine for three minutes at 2500 to 3000 rpm, then let it idle. If the electric cooling fan is running, do not wait for it to stop.
10. Check the CO level as given in Specifications. If it is not normal, remove the rubber plug from the air cleaner and turn the bypass air adjustment screw as required using Mazda special tool number 49 HC27 140.
Using a lever, remove the rubber plug that hides the mixture adjustment screw (EGI engine) |
View of the idle mixture adjustment screw on the EGI engine (with the air flow meter removed) |
11. Install the rubber plug, then adjust the idle speed as described in Step 7.
Checking and adjusting the ignition timing (EGI engine)
12. The procedure is mainly described in Section 1, Chapter 34, but in addition, the vacuum distributor capsule hose must also be disconnected and connected before checking and adjusting the ignition timing. Install the hose and check that the vacuum delay valve is installed correctly (photo).
Vacuum hoses distributors... |
...and the vacuum delay valve on the EGI engine |
Checking the rear disc brake
13. Check the front wheels, then jack up the rear of the car and support it on axle stands. Remove the rear wheels.
14. Check the gaps in the rear of each caliper to ensure the lining material thickness on each pad is at least 1.0 mm. If it is less, replace all four rear pads at the same time.
15. Check the high-pressure brake line pipes, check the caliper for damage and leaks.
16. Check the rear discs for wear depth and, if necessary, replace them.
17. Install the rear wheels and lower the car to the ground.
Checking and adjusting the shock absorber (EGI engine)
18. Hold the throttle valve fully open, then press the shock absorber rod with your finger and check that the rod moves slowly. Once you release the rod, it should move quickly.
19. To adjust it, first start the engine and warm it up to normal temperature.
20. Stop the engine and connect the tachometer.
21. Start the engine at 3500 rpm, then slowly reduce it and check that the throttle lever touches the shock absorber rod at 3000±100 rpm.
22. If necessary, loosen the lock nut and reinstall the shock absorber (photo).
Shock absorber and adjustment lock nut (indicated by the arrow) on an EGI engine
23. After adjustment, tighten the lock nut. Remove the tachometer.
Replacing the fuel filter (EG1 engine)
24. The fuel filter is located on the left side in the engine compartment (photo).
Fuel filter on an EGI engine
25. Place a rag under the fuel filter to collect any spilled fuel.
26. Unscrew the bolts and remove the fasteners from the top and base of the fuel filter. Remove the washers.
27. Unscrew the rubber mounting nuts and remove the fuel filter. Loosen the clamp bolt and remove the suspension.
28. Check the rubber seals and replace them if necessary.
29. Install the new fuel filter using the reverse of the removal procedure.
Replacing the air filter element (EGI engine)
30. Unscrew the four bolts securing the air filter cover and air flow meter from below to the body.
31. Lift the cover and remove the air filter element (photo).
Removing the air filter element on an EGI engine
32. Wipe clean the inside of the cover and the lower mount to the body. If necessary, the lower housing can be completely removed by unscrewing the mounting nuts and disconnecting the air intake manifold (photo).
Lower air filter mount to the body (EGI engine)
33. Install the new element using the reverse of the removal procedure.
Replacing the wiper blade
34. Since October 1984, the wiper blades and holders have been changed and are now connected by a hook and turn instead of a pin and socket.
35. To remove the wiper blade, first turn it towards you, then pull it out of the mount and remove it. Assembly is carried out in reverse order.