Models with EZL type system
Note: Similar to the non-contact TSZ system interrupted by a sensor inside the distributor, the EZL ignition system is switched solely by the crankshaft position sensor - the distributor's only function is to direct high voltage to the spark plugs. Therefore, the basic ignition timing settings cannot be changed by rotating the distributor housing. When installing the distributor, it is not necessary to set the ignition timing.
Removing
1. Disconnect the negative battery terminal.
2. Loosen the fastening screws and remove the distributor cover and take it aside.
3. Turn the crankshaft so that the piston of the 1-cylinder is set to the TDC position, as described in Chapter 2A or 2B, depending on the type of engine. After that, if you do not turn the crankshaft with the distributor removed from the cylinder block, you can remove and install the distributor without losing its alignment.
4. Loosen and unscrew the clamp bolt, then remove the distributor housing from the cylinder block (see fig. 4.4).
Pic. 4.4. Loose distributor clamp bolt
5. Check the condition of the oil sealing ring (where it is installed) — at detection of destruction or at detection of smudges of oil, replace a ring.
Installation
6. If the crankshaft did not turn from the TDC position of the piston of the 1st cylinder, then follow the steps starting from step 8. If the position of the crankshaft changed, follow the steps starting from step 7.
7. Turn out the spark plug of the 1st cylinder as described in Chapter 1 A. Plug the spark plug hole with your thumb, then turn the crankshaft (as described in section "Withdrawal") so that the following conditions are met (see fig. 4.7).
Pic. 4.7. The TDC position mark on the crankshaft vibration damper is aligned with the pointer (shown by arrow) on the camshaft timing chain cover
- A) You should feel pressure in the spark plug hole.
- b) The TDC mark on the crankshaft vibration damper must exactly match the pointer on the camshaft drive chain cover (see section 'Removal').
8. Insert the distributor into the crankcase and align the end of the distributor shaft with the drive gear so that:
- A) When the distributor body is flush with the support flange. the slider will point directly to the alignment mark on the distributor body (temporarily remove the slider, then remove the plastic tap to see the alignment mark (see fig. 4.8, a, b).
- b) The yoke bolt hole on the support flange was aligned with the center of the elongated hole on the distributor base. Rotate the distributor housing to fulfill this condition.
Pic. 4.8, a. Remove the plastic screen...
Pic. 4.8b....to check that the slider is pointing to the installation mark
Note: The distributor drive gear is helically cut so the runner will turn when the distributor shaft is installed. To compensate for this, before installing the distributor shaft, turn the slider to the alignment mark.
9. Install the distributor clamp bolt and tighten securely.
10. Install the distributor cover, then insert and tighten the fixing screws.
Models with TSZ ignition system
Note: Unlike the contactless EZL ignition system which is interrupted by a crankshaft position sensor, the TSZ type ignition system is interrupted by a sensor fixed inside the distributor. Therefore, the basic setting of the ignition timing must be checked and adjusted after removing and installing the distributor.
Removing
11. Follow the steps described in paragraphs. 1-3 inclusive.
12. Disconnect the hose from the vacuum assembly on the side of the distributor housing.
13. Disconnect the distributor sensor wire from the block side on the side of the distributor housing.
14. Mark the relative position between the distributor base and the support flange on the engine using paint or a scraper. These marks will help you properly install the distributor.
15. Loosen and unscrew the clamp bolt, then remove the distributor from the crankcase (see fig. 4.15).
Pic. 4.15. Distributor clamp bolt (shown by arrow)
16. Check the condition of the oil sealing ring (where it is installed) - if damage is detected or oil leaks, replace the ring.
Installation
17. Follow the steps described in paragraphs 6-10, inclusive (see fig. 4.17). To set the approximate setting of the ignition timing, use the marks made during removal on the base of the distributor housing and the support flange.
Pic. 4.17. The slider points directly to the registration mark (shown by arrow) on the distributor body
18. Connect the vacuum assembly hose and sensor wire.
19. Upon completion, check and, if necessary, adjust the ignition timing, guided by the description in paragraph 6.