TRBL
SHTG
9-3
61U5H11
Troubleshooting
Refer
Symptom 2
Cause 1
Cause 2
Checking step
to
page
8-8
8-8
5-4
8-6
Pulser coil malfunction
Measure the pulser coil
resistance.
Change the pulser coil
and check the ignition
spark.
Pulser coil out-
put peak volt-
age less than
specifications
5-4
8-6
Charge coil malfunction
Measure the charge
coil resistance.
Change the stator
assembly and check
the ignition spark.
Charge coil out-
put peak volt-
age less than
specifications
Spark plug does
not spark
Cylinder head gasket
malfunction
Disassemble and
check the reed valves.
Check the compression
pressure.
5-1
5-24
Low compres-
sion pressure
—
Scratched piston or
wear the piston rings
Check the compression
pressure and disas-
sembling the power
unit.
Scratched cylinder wall
—
Reed valves
malfunction
5-1
5-35
—
Refer
Symptom 2
Cause 1
Cause 2
Checking step
to
page
Symptom 1: Unstable engine idle speed, poor acceleration, poor performance
Throttle cable adjusting
improperly
Check and adjust the
throttle cable.
Check and adjust the
throttle link length.
3-6
—
—
—
Throttle link length
improperly
3-5
Fuel supplied to the
carburetor improperly
Check the fuel filter for
clog.
3-2
Fuel not sup-
plied properly
Fuel filter
malfunction
Check the fuel joint
pressure.
4-17
Fuel joint
malfunction
Carburetor malfunction
Check and adjust the
pilot screw settings.
4-13
Pilot screw set-
tings improperly
Disassemble and
check the carburetor.
4-12
Throttle valve
stuck or
damage
Jet or nozzle
clogged and or
float damaged
Check the fuel pump.
4-16
Fuel pump
malfunction
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Страница 79: ...61U5H11 4 18 9 8 7 6 5 4 3 2 1 MEMO ...
Страница 136: ...POWR 5 55 61U5H11 Power unit MEMO ...
Страница 159: ...61U5H11 6 22 9 8 7 6 5 4 3 2 1 Shimming Shimming 6G46090E T3 M3 M4 M1 M2 T1 T2 F R P ...
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Страница 256: ...YAMAHA MOTOR CO LTD Printed in Japan Oct 2005 1 2 1 E_1 Printed on recycled paper E115A 115B 140B ...