C1Q choke

[Matto]

Hi guys,

Working on my Ryobi Rcs3540 and I was wondering if my choke works normaly or if it's a malfunction. It's a Zama C1Q

When I pull the choke-knob and press the throttle, the choke stays on. I have to manually push in the choke-knob to disengage the choke.
There is a mecanism with a spring on the choke lever but it seems to be there for nothing...

On my other saws, the choke akways disengage when the throttle is pressed.

 

[Matto]

Made a short video

 

[alexcagle]

Looks like a 1/2 choke detent.

 

[Chris-PA]

That's probably how it is supposed to work. Some have a spring that pulls off the choke, some do not. Interestingly, I have a Ryobi RY10532 (a GZ400 similar to yours) and a GZ4000, both with ZAMA carbs. The Ryobi choke does not pull off with the throttle while the GZ4000 does.

It can be a disadvantage when you forget to turn it off, but it is an advantage when you're dealing with vapor lock on a hot day. At any rate there's nothing wrong with it that needs fixing.