DS 19 OPERATION No. DS 211-0 : Ignition adjustments. Op. DS 211-0 134
TOOLS
14 Final adjustment having been obtained, make sure that the average of the two gaps is equal to 0.4 mm.
Examples : 0.35 and 0.45 mm.
0.30 and 0.50 mm.
Avoid settings such as 0.30 and 0.45 mm.
To Adjust the synchronisation of the breakers (test bench 2209-T, see Pl. 32).
15 To mount the contact breaker on the bench tester
a) Put the contact breaker in position.
b) Fit the test lamp (23) on the contact breaker. Connect the crocodile clip of the lamp feed (A) to the positive
terminal of a 6 volt battery and connect the crocodile clip of the earth wire (B) to the negative terminal of the
battery.
c) Fit the pointer (24) on the contact breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test bench 2209-T
16 To adjust the synchronisation
Turn the contact breaker in the direction of the arrow. The lamps should go out alternately each time the
pointer passes through 90 ± 1˚. If not, reset the gaps as indicated in paragraphs 12, 13 and 14.
To bench test a contact breaker (see Pl. 32A, fig. 1).
17 Bench test the contact breaker as normal contact breaker, dealing successively with each contact.
The centrifugal advance should be between 3˚ 30’ and 7˚ 30’ at 1000 r.p.m. contact breaker and between
10˚ 30’ and 15˚ 30’ at 1500 r.p.m. contact breaker.
On an adjustable contact breaker and with a production type coil, sparks of 12 mm minimum should be
obtained (some misfires will be accepted) at 500 r.p.m. and 5 mm minimum at 2000 r.p.m. contact breaker.
ADJUSTMENT OF THE CONTACT BREAKER (with one breaker) DUCELLIER 3944-A or SEV N4-YG.
18 Make sure that the contact points are in good condition. Adjust the gap to 0.4 mm. Use a set of very clean
feeler gauges, so that no trace of grease is deposited on the contact points.
To bench test a contact breaker (see Pl. 32A, fig. 2).
19 The centrifugal advance should be between 4.5˚ and 7.5˚ at 1000 r.p.m. contact breaker and between 7.5˚ and 9.5˚
at 1500 r.p.m. contact breaker.
On an adjustable contact breaker and with a production type coil, sparks of 12 mm minimum should be
obtained (some misfires will be accepted) at 500 r.p.m. and 5 mm minimum at 2000 r. p. m. contact breaker.
NOTE - This contact breaker is not fitted with a suction control.
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