I cant help myself, but there's just so much nonsense out there.
First of all, the TORS system does not control fuel at the carburetor. It's a module that's tied into the engine's kill circuit (Black/White wires) that provides a means to kill the engine in case of a throttle fault...
There's a simple on/off switch at both the throttle and carb. Both switches attempt to complete a circuit between ground and the TORS module. The one at the throttle is normally open (infinite resistance) at idle while the one at the carb is normally closed. When you crack the throttle open BOTH those switches change to the opposite. That way, the TORS module always sees a closed circuit to ground. Now, if the carb hangs or sticks and the rider closes the throttle, both circuits would be open and the module would interpret that as a fault and kill the engine by grounding the B/W kill circuit (just like the key or on/off switch does).
Incidentally, among other errors, the factory Yamaha blaster shop manual has the above section INCORRECTLY described. Probably explains some of the confusion. And since the Clymer manual is likely based on the OE manual in large part, it also has the same errors.
Easiest way to diagnose a bad TORS is just unplug the module. If the problem goes away, done deal. No need to buy a 200 dollar aftermarket carb, or fancy TORS elimination kit. Don't worry about the gizmo on top of the carb either. All it has is an idle adjustment screw and a switch (that you dont need to worry about anymore). THere's nothing in there that would cause the engine to over-rev or hang.
First of all, the TORS system does not control fuel at the carburetor. It's a module that's tied into the engine's kill circuit (Black/White wires) that provides a means to kill the engine in case of a throttle fault...
There's a simple on/off switch at both the throttle and carb. Both switches attempt to complete a circuit between ground and the TORS module. The one at the throttle is normally open (infinite resistance) at idle while the one at the carb is normally closed. When you crack the throttle open BOTH those switches change to the opposite. That way, the TORS module always sees a closed circuit to ground. Now, if the carb hangs or sticks and the rider closes the throttle, both circuits would be open and the module would interpret that as a fault and kill the engine by grounding the B/W kill circuit (just like the key or on/off switch does).
Incidentally, among other errors, the factory Yamaha blaster shop manual has the above section INCORRECTLY described. Probably explains some of the confusion. And since the Clymer manual is likely based on the OE manual in large part, it also has the same errors.
Easiest way to diagnose a bad TORS is just unplug the module. If the problem goes away, done deal. No need to buy a 200 dollar aftermarket carb, or fancy TORS elimination kit. Don't worry about the gizmo on top of the carb either. All it has is an idle adjustment screw and a switch (that you dont need to worry about anymore). THere's nothing in there that would cause the engine to over-rev or hang.
