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A
B
C
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SDN8090
SDN8100
SDN8110
SDN8120
8-5
IGNITION SYSTEM
SPARK PLUG
1. Remove:
•
Spark plugs
2. Measure:
•
Spark plug gap
Standard spark plug:
BR9ECS (NGK)
Spark plug gap:
0.7 ~ 0.8 mm (0.028 ~ 0.031 in)
THROTTLE OVERRIDE SYSTEM (T.O.R.S.)
If the carburetor or throttle cable should malfunc-
tion during operation, T.O.R.S. will operate when
the throttle lever is released.
T.O.R.S. is designed to interrupt the ignition and
keep the engine revolutions between 2,800 and
3,000 r/min if the carburetor fails to return to idle
when the lever is released.
WARNING
•
If T.O.R.S. operates, make sure that the cause
of the malfunction is corrected and that the
engine can be operated without a problem
before restarting the engine.
•
Be sure to use the standard resistance-type
spark plug and spark plug cap. Otherwise,
T.O.R.S. will not work properly.
A
B
Idling
Status
or
Running
Switch
starting
Throttle
OFF
ON
switch
Carburetor
ON
OFF
switch
Engine
Running
Running
1
Carburetor switch
2
Throttle switch
3
Throttle cable
4
Throttle stop screw
a
ON
b
OFF
–
+
ELEC
C
Trouble
OFF
OFF
T.O.R.S. operating
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