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1. Throttle lever
ESU13750
Throttle override system
(T.O.R.S.)
EWS00041
WARNING
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 (RS90P / RS90PLT / RST90PGT)
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.)
Control functions
Idling
Throttle
Released
lever
Throttle
Closed
valve
Engine
T.O.R.S.
runs
properly.
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 (RS90P /
RS90PLT / RST90PGT) or flashes (RST90)
in the meter display. If this occurs, have a
Yamaha dealer check the system as soon as
possible.
RS90P / RS90PLT / RST90PGT
1. Warning light "
2. Engine trouble warning indicator "
3. Two-digit code "84"
Malfunc-
Riding
tion
Squeezed
Released
Open
Open
Engine
T.O.R.S.
runs
will be ac-
properly.
tivated.
"
"
13
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