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12
ESU13750
Throttle override system
(T.O.R.S.)
WARNING
EWS00041
If the T.O.R.S. is activated, make sure that
the cause of the malfunction has been cor-
rected and that the engine can be operated
without a problem before restarting the
engine. Continuing to operate with a mal-
function could cause loss of control or
damage.
If the throttle valves or throttle cable malfunc-
tions during operation, the T.O.R.S. will be ac-
tivated when the throttle lever is released.
The T.O.R.S. is designed to override the fuel
injection (RS90GT / RS90LTGT / RST90GT)
or ignition (RST90) and limit the engine
speed to less than the clutch engagement
speed if the throttle valves fail to return to the
idle position when the throttle lever is re-
leased. (See page 122 for the clutch engage-
ment speed.)
TIP
If the T.O.R.S. is activated, the warning light
and engine trouble warning indicator flash,
and the two-digit code “84” displays
(RS90GT / RS90LTGT / RST90GT) or flash-
es (RST90) in the meter display. If this oc-
curs, have a Yamaha dealer check the
system as soon as possible.
RS90GT / RS90LTGT / RST90GT
1. Throttle lever
Idling Riding
Malfunc-
tion
Throttle
lever
Released Squeezed Released
Throttle
valve
Closed Open Open
T.O.R.S.
Engine
runs
properly.
Engine
runs
properly.
T.O.R.S.
will be ac-
tivated.
1. Warning light “”
2. Engine trouble warning indicator “”
3. Two-digit code “84”
U8JA11E0.book Page 12 Monday, June 14, 2010 10:22 AM