Yamaha RST90K Owner's Manual download pdf (Page 21)

5-3

ESU04151

Throttle override system (T.O.R.S.)

If the carburetor or throttle cable should malfunction dur-

ing operation, the T.O.R.S. will operate when the throttle

lever is released.

The T.O.R.S. is designed to interrupt the ignition and

keep the engine speed between 2,800 and 3,000 r/min if

the carburetor fails to return to idle when the lever is

released.

WARNING

●

If the T.O.R.S. is activated, make sure that the

cause of the malfunction has been corrected and

that the engine can be operated without a prob-

lem before restarting the engine.

●

Be sure to use the specified spark plug and spark

plug cap. Otherwise, the T.O.R.S. will not work

properly.

CA-19E

Idling/starting

Running

Tr o u b l e

Throttle position sensor (throttle valve position)

Throttle switch

Throttle cable

Off

Open

Closed

NOTE:

When the T.O.R.S. is activated, the warning light

and

self-diagnosis warning indicator

will flash and the two-

digit code “84”

will flash in the tripmeter/odometer dis-

play.

Mode

Item

Idling/

starting

Running Trouble

Throttle switch Off On Off

Throttle position

sensor

Closed Open Open

Engine Run Run

T.O.R.S.

will operate

B C

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Yamaha RST90K Owner's Manual Page 21

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