S-24
WG972-E2, DF972-E2, WSM
GASOLINE / LPG ENGINE
(5) Ignition System
Timing Light Test
1. Set the timing light to High-tension cord.
2. Close the fuel cocks.
3. Cranking the engine.
4. If the timing light blinks, the spark plug and ignition coil are
normal.
5. If the timing light does not blink, check the spark plug / ignition
coil.
W10125620
Ignition Timing
1. Using a timing light, check that the ignition timing (stamps on the
flywheel) (4) is aligned with the mark (3) on the rear end plate (2).
2. The pick-up sensor is tamper resistant (5); the ignition timing
adjustment screw has been covered after adjustment at the
factory.
W1103663
Resistance of Pick-Up Sensor
1. Disconnect the connector.
2. Measure the resistance with an ohmmeter.
3. If the resistance is not with in the factory specifications, replace it.
NOTE■
•This check sheet shows the results of the test conducted by
using the "Sanwa-made testers SP-10 / SP-150" (analog
meter).
•Use of other testers than those above may show different
measured results.
W1051348
Ignition timing Factory spec.
0.331 to 0.401 rad
(19 to 23 °) before T.D.C
at 3600 min
-1
(rpm)
(1) Flywheel
(2) Rear End Plate
(3) Mark
(4) Ignition Timing
(5) Tamper Resistance
Resistance
Factory
spec.
A - B 1.85 to 2.45 kΩ at 20 °C
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