c in the direction of the arrow ,,A" (Fig. 29) till the
encapsulated semiconductor device. The ignition index lines (timing marks) ,,B" on the rotor and
coil is enclosed in a cylindrical aluminium case. stator coincide. Insert an indicator or a depth slide
gauge into the spark plug hole and measure
Feeding — generator coil the depth to the retracted piston. Then continue
Starting — pulse-forming coil rotating the rotor in the direction of the arrow
Spark plug — PAL N 7R ,,A" till the piston reaches its top position (T.D.C.).
Plug point gap — 0.5 mm
Ignition advance — 1-1.5 mm before T.D. The distance read off the indicator or depth
gauge from the point of the coincidence of the
The described ignition system of the moped does timing marks to the piston T.D.C. should be 1
not require any maintenance apart from occasional to 1.5 mm. If this distance is greater, loosen the
cleaning of the spark plug. Any defect which might screws (E) — Fig. 30, and turn the stator in the
occur is usually the result of unskilled interference direction indicated by the arrow ,,C". If the disor
rough handling on the part of the user. Adjust- tance is smaller, turn the stator in the direction
ment of the ignition advance is likewise not ne- of the arrow ,,D".
cessary as there are no parts subject to wear. The
only instances in which the advance has to be re- Repeat this procedure till obtaining the specified
adjusted is the working loose of the stator screws advance of 1 to 1.5 mm. Then retighten the
or the removal of the alternator. Therefore refrain screws ,,E" and recheck the advance.
from interfering with the ignition system in any
way. In the case of a defect, have the repair done
by a skilled electrician.
3. Moped Wiring Diagram
(is placed on page 30)
ZVL model 210 Workshop Manual Page 22 jkw
4. Electronic Ignition Diagnosing Tester
It is recommended to use an ohmmeter with 1.5 to 3 V in-feed.
Use ohmmeter with 1 kiloohm (10 kiloohms) range scale.
When checking semiconductor device, start with its internal connections.
To check the thyristor trigger circuit, measure the resistance between the
outlets I and 1, and repeat the measuring after interchanging the
measuring ends (i.e. reversing the fed-in voltage polarity). The measured
resistance must be different in both instances. The semiconductor device
is unequivocally defective if the resistance measured in both instances
nears 0 or ∞ . During the measuring between points G and 1 (and also
when interchanging the measuring ends) the indication in both instances
must be ∞. If a certain deviation is measured in one direction (+ to G),
the thyristor has a leakage which represents a defective condition. With a
faultless semiconductor device, the measurements in both directions
between the points G—I and 1—15 must indicate ∞. With some
measuring instruments (with a higher response of the measuring system),
it is possible to find within the 10 kiloohm range any defect of parts
between the points G and 15. When connecting the measuring points so
that the positive pole is to G, the instrument will show a deflection but the
pointer will return to ∞ after a brief interval. When interchanging the
measuring ends (points), the instrument indicates ∞ resistance. If the
capacitor C is shorted, the first measuring will show a resistance of
constant value. In the case of a short-circuit of the diode, the phenomenon
of the first measuring is bound to appear also after the interchange of the
points. It goes without saying that in the case of the interruption of D or
C , ∞ would be measured in both directions. We should like to point out
that with the phenomenon accompanying the first measuring, the
capacitor becomes charged to the voltage of the measuring instrument and
the check can be repeated only after the spontaneous discharging of this
capacitor which might take several minutes up to an hour.
A faultless ignition pole should give an ohmmeter reading of about 220 ±
10 ohms between pole core, vehicle frame (ground) and pole outlet (red
A faultless pulse-forming coil should give an ohmmeter reading of about
17 ± 1 ohms between the stator carrier and its outlet (yellow lead).
The resistance between the terminals 1 and 15 must be less than 1 ohm.
The resistance between the terminal 15 and the H.T. outlet should be
about 6,000 ohms. A defect can be ascertained unequivocally by this
measuring only in the case of an interruption of the circuit — the
measuring instrument indicates ∞ (infinite resistance).
Defects of the ignition coil are rare and therefore it is recommended to
check before its renewal the condition of the connecting leads and
Replace the H.T. coil only with an original coil,
Part No. 443 212 210 800 — 4 V.