Service manual

7-5
IGNITION SYSTEM
ELEC
WARNING
A B C
Status
Switch
SPARK PLUG
1. Remove:
 Spark plugs
2. Measure:
 Spark plug gap
Standard spark plug:
BR9ES (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 mal-
function 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.
 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. Other-
wise, T.O.R.S. will not work properly.
Idling
or
starting
Running Trouble
Throttle
switch
OFF ON OFF
Carburetor
switch
ON OFF OFF
Engine Running Running
T.O.R.S.
operating
1
Carburetor switch
2
Throttle switch
3
Throttle cable
4
Throttle stop screw
a
ON
b
OFF