1991-1993 Yamaha Exciter II-570 Service Manual, Page 399Get this manual
IG_N_IT_IO_N_S_Y_S_T_EM_IELECliiil 8E031
SPARK PLUG
1Remove: Spark plugs 2Check: Spark plug Standard spark plug: BR9ES (NGK)
Spark plug gap: 0.70.8 mm (0.0280.031 in)
THROTTLE OVERRIDE SYSTEM (T.O.R.S
Ifthe carburetor or throttle cable malfunction during operation, the T.O.R.Swarning light turns on and offwhenthethrottle leveris releasedThe T.O.R.Sis designed to interrupt the ignition and keep the engine revolution between 2800 and 3000 r.p.mif the carburetor fails to return to idle when the lever is released
WARNING