Yamaha 2002 YFS200 Supplementary Service Manual - Page 23

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CHECKING THE SIGNAL SYSTEM

1.If the tail/brake light fails to come on:

1.Bulb and bulb socket

Check the bulb and bulb socket for continu-

ity.

2.Brake light switches

Refer to "CHECKING THE SWITCH".

3.Voltage

Connect the tachometer to the spark plug

lead.

Connect the pocket tester (DC 20V) to the

bulb socket connector.

Tester (+) lead → Yellow terminal 1

Tester (–) lead → Black terminal 2

Start the engine and accelerate to about

5,000 r/min.

CAUTION:

Do not run the engine in neutral above

6,000 r/min for more than 1 or 2 seconds.

Lighting voltage:

13.5 ~ 14.1 V at 5,000 r/min

CONTINUITY

OUT OF

SPECIFICATION

SIGNAL SYSTEM

NO CONTINUITY

Replace the bulb and/or bulb socket.

NO CONTINUITY

Replace the brake switch.

MEETS SPECIFICATION

The lighting circuit is not faulty.

– 15 –

–

ELEC