Yamaha 40V Manuel de service télécharger pdf (Page 197)

8-10

–+

ELEC

IGNITION SYSTEM

IGNITION SPARK GAP

WARNING

● While checking the spark be careful not to

touch any connection of lead wires of the

“Ignition spark gap tester”.

● When doing the spark test, take special

care not to allow leakage from the plug

cap which has been removed.

● This check is likely to produce sparks, so

be sure that no flammable gas or fluid is

present.

1. Check:

● Ignition spark gap

Out of specification → Replace.

CDI SYSTEM PEAK VOLTAGE

WARNING

While taking CDI unit check be careful not

to touch any connection of lead wires of

the “Digital tester”.

NOTE:

● If there is no spark, or the spark is weak,

continue with the CDI test.

● If a good spark is obtained, the problem is

not with the CDI system, but possibly the

spark plug or other component is defec-

tive.

Spark gap:

9 mm (0.35 in)

Checking steps:

● Adjust the spark gap to specification

by turning the adjusting knob.

Spark gap tester:

YM-34487/90890-06754

● Connect the spark plug cap to the

spark gap tester.

● Remove the spark plugs from the

engine.

● Crank the engine and check the sparks

from the ignition system through the

discharge window.

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Yamaha 40V Manuel de service Page 197

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