Yamaha 25 NMHOS [210/245] Ignition and ignition control sys tem

Yamaha 25 NMHOS [210/245] Ignition and ignition control sys tem
ELEC
8-5
69R3J11
Electrical system
Ignition and ignition control sys-
tem
Checking the ignition spark gap
1. Disconnect the all spark plug caps from
the all spark plugs.
2. Connect a spark plug cap to the special
service tool.
3. Crank the engine and check for a spark.
If there is no spark. Check the ignition
system.
w
9 Do not touch any of the connections of
the ignition tester leads.
9 Keep flammable gas or liquids away,
since this test can produce sparks.
Checking the spark plug cap
(with resister type)
1. Check the spark plug caps. Replace the
spark plug caps if cracked or damaged.
2. Remove the spark plug cap 1 from the
spark plug wire 2 by turning the cap
counterclockwise.
3. Measure the spark plug cap resistance.
Replace the spark plug cap if out of spec-
ification.
6S680040
Ignition tester: 90890-06754
6B480080
1
2
69R80060
Spark plug cap resistance:
4.0–6.0 k at 20°C (68°F)
Ignition tester: 90890-06754
69R3J11_08 7/5/06 3:17 PM Page 6

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