Universal M18 - stopping using throttle push back
The previous owner told us the way to stop the engine was to pull up on a black lever, which we've been doing happily for over 2 years.
Over the weekend I was doing something novel... reading the manual.
It advises that the way to stop the engine is to push back on the throttle and not to use the decompression lever.
I tried to push back on the throttle but the engine didn't stop, it barely makes any movement on the engine end of the throttle.
a) I am correct in assuming the black lever we've been pulling is the decompression lever we're not supposed to pull up?
b) Do we need to adjust the throttle lever to have more of an impact on the throttle at the engine end?
Thanks in advance for any advice.