Quote Originally Posted by taslucas View Post
Its actually a choke with a lock to hold it on. Used more for cold mornings rather than as an acceleraion aid. The symbol under the word "lock" (like this: / with a dot in the middle) is the international sign for a choke.
Choke's do not have a lock on it as far as I'm aware, it is a Throttle / Idling Control Knob, but the use for it you are correct.

Uses

Cold Engine
Winch

Tonys "Lets you hold the engine revs up without using the accelerator, good for rough driving where your foot would be bouncing on the pedal" is not listed in the owners maunual" Says something big black letter, Avoid driving the vehicle with the throttle/idling control pulled out.......

But I agree with Tony, and have used it plenty of times before.