Originally Posted by Venice Motor Bikes
I used to remove the pins & just tighten the throttle down on the bars, until I had a customer that told me that the throttle case developed a crack & the throttle came off in his hand while he was riding!! Luckily he wasn't hurt, & now I always drill the hole to mount the throttle.
Maybe he put too much force on the throttle and broke it? I cannot see another way for a crack to appear there.
I just cut it with a wire cutter and tighten the two bolts (not too much, not too little).
IMO, if you want a safe and way better throttle, you can allways use a moped one, they are very cheap.