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throttle switch on yfz 450?

11K views 4 replies 5 participants last post by  wicked_dean 
#1 ·
ok I just purchased a yfz 450 and it was supposed to be perfect well guess what it hs issues i was wondering if someone could answer some questions for me....
there is a switch in the throttle housing on the handle bars that tell something when the the throttle is closed. I have done a bunch of checking and the motor has not spark at idle if i take the slack out of the throttle (away from the switch) it will start and idle just fine....any ideas?
 
#4 ·
i think its the T.O.R.S SWITCH LOTS OF YAMIS HAVE IT. BASICLY YOU HAVE 2 SWITCHES 1 AT THE THUMB THROTTLE AND 1 AT THE CARB. ONLY 1 IS OPEN AT A TIME SO IF IT DETECTS BOTH OPEN AT ONCE IT LIMITS RPM TO 2500-3000 ITS A SAFETY FEATURE YOU CAN BYPASS IT BUT I MYSELF WOULDNT!!! ALOT OF TIMES YOU JUST NEED TO SET THE CABLE SLACK AT BOTH ENDS PER THE MANUAL
 
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