Control System - Yamaha 150A Service Manual

INSP
ADJ
FUEL SYSTEM/CONTROL SYSTEM
3040
3050
3051
INSPECTING THE FUEL FILTER
Inspect:
• Fuel filter element
• Fuel filter cup
Clogs/cracks/leaks → Replace.
Foreign matter → Clean.
Refer to "FUEL JOINT AND FUEL FIL-
TER" on page 4-1.

CONTROL SYSTEM

ADJUSTING THE IGNITION TIMING
1. Inspect:
• Ignition timing (full advance)
Incorrect → Adjust.
Inspecting steps
(1) Remove the flywheel magnet assem-
bly cover.
(2) Turn the flywheel magnet assembly 1
clockwise and align the timing plate 2
with the specified mark.
Flywheel magnet assembly
position
150A, L150A, 175A/
C150TR:
200A, L200A:
150F, L150F, D150H,
175D, S175D/D150TR,
S175TR:
S150F, LS150F, 175F,
200G/S150TR, L150TR,
P175TR, P200TR:
150G, 200F, L200F/
P150TR, 200TR:
S200F, LS200F, 225D/
S200TR, L200TR:
(3) Turn the magneto control lever 3 so
that it contacts the full advance adjust-
ing screw 4.
(4) Check that the mark a on the flywheel
magnet assembly aligns with the mark
b on the pulser coil assembly.
3-3
E
3
3
3
BTDC 19˚
BTDC 18˚
BTDC 22˚
BTDC 23˚
BTDC 20˚
BTDC 21˚