Yamaha GP 338F Servise Manual page 58

The engine is cranked again but will not start.
Magneto
Charging co il
Continu ity test
Brown - BI ack
790.11 ±
10%
I t appears that no spark is produced.
Ignition system
(9) Lighting circuit
The lighting circuit consists of the flywhee l magneto ,
lighting coil, headlight,
C.D.I.
unit, tachometor, tail -
light, main switch, and hight - low beam switch.
The stoplight circuit consists of the charging coil,
flywheel magneto, C.D.I. unit stoplight switch , and
stoplight.
If anyone of the lights should burn out, replace it
immediately; othe rwi se, the other lights will soon
burn out.
1)
Headlight beam angle adjustment
The headlight beam angle can be adjusted by loosen-
ing and tightning the four screws , mounting the
lens assembly.
Fig. 5-14
-55-
ELECTRICAL SYSTEM
The engi ne tends to kick back.
Magneto
Check for ignition timing .
Check whether spark is cor-
rectly ti med to the advanced
position, us i ng a tim ing light.
l
NO
~
YES
Igni t ion system
C.O.I. uni t
Continuity test
1
Ignition system