Yamaha E115A, Service Manual

Page: 54 / 261

5. Check that the scale
c
on the flywheel
magnet is advances to specified position,
when the throttle is fully opened.
6. If the ignition timing is out of specification,
refer to “Adjusting the timing plate”
P5-52 and “Adjusting the ignition timing
stopper” P5-53.
Checking the choke solenoid
(E, ET)
1. Check that the choke solenoid face
a
is
between the line
b
on the plunger. Adjust
the position of the choke solenoid to
loosen the bolt
1
if necessary.
3. Attach the special service tool
3
to spark
plug wire #1
2
, and then start the
engine. Cheek the engine idle speed and
ignition timing.
4. Check that the ATDC 5° scale
a
on the
flywheel magnet is aligned with the point-
er
b
on the timing plate, when the throt-
tle is fully closed.
61U30250
2
3
CHK
ADJ
3-9 61U5H11
Periodic check and adjustment
a
b
1
61U30120
Timing light
3
: 90890-03141
Timing plate position:
ATDC 4–6°
10
TDC
10
a
b
61U30260
20
30
c
61U30270
Timing plate position:
E115A:
BTDC 22–24°
115B:
BTDC 24–26°
140B:
BTDC 21–23°
Engine idle speed:
700–800 r/min
Engine speed (throttle fully opened):
5,500 r/min
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