QA-42A chute control
 

Well, I have the snowthrower hooked up to my 149 for the first time. It works great! The snow was several days old and kinda wet, and it still threw the snow quite far. One issue, however...the chute turns by itself, caused by vibration. I had to keep one hand on the control rod to keep the snow blowing where I wanted it. Can this be adjusted? Do I need to tighten the spring on the control rod? I love this thing!
Thanks so much for your great advice. This is a great site! !:Bowdown2:

I think the only way to adjust this is to increase tension on the spring by adding a washer between the u-joint and the spring, kind of a trick since you need three hands to do it!

I tightened mine by bending the 3 little tabs that keep the rotating chute on the thrower.
They are attached by bolts, I removed them and put them in a vise hitting with a hammer to put more bend in them, making them tighter.
Sometimes it takes several tries, as you can get them too tight making the chute difficult/impossible to turn. But when you get it right, it stays put where you aim it.
Also, I Had a friend who put one wrap of a rubber tarp strap on the chute control rod causing enough friction to keep the rod from turning unwontedly.
It wasn’t high tech, but it sure worked well.

Thanks, guys. I tinkered with it today and think it's gonna work OK now. I took off the tabs like ol' George said, and tightened the bolts a little more (yeah, I snapped one of them). The chute doesn't wobble as much either, so it needed the attention anyway. I also thought about putting a piece of pipe insulation around the chute control rod, thus achieving the same effect that ol' George was suggesting too.
104, if this strategy doesn't work, I'll try your washer idea on the u- joint.
Thanks again.