Troy Bilt B&S pressure washer throttle linkage

[barely handy]

I have a not-too-old Troy Bilt pressure washer powerd by a Briggs and Straton 175 engine. The throttle linkage is off, which results in a wonky idle and it not reving when I pull the trigger. Having searched for pictures of the linkage online and found none, I'm turning to this forum for some help. Can anyone guide me to figuring out what is wrong here, please? The arm that runs vertically in these pictures pops off the pivot point easily (too easy?) when I mess with it.

 

[Tiger Small Engine]

I have a not-too-old Troy Bilt pressure washer powerd by a Briggs and Straton 175 engine. The throttle linkage is off, which results in a wonky idle and it not reving when I pull the trigger. Having searched for pictures of the linkage online and found none, I'm turning to this forum for some help. Can anyone guide me to figuring out what is wrong here, please? The arm that runs vertically in these pictures pops off the pivot point easily (too easy?) when I mess with it.


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The tab at the bottom left of picture is how you adjust RPMs by bending it. Need a tachometer to check and adjust as needed. The engine speed will not change when you pull the trigger on wand for water to come out, it will remain the same. Including the model number will be helpful.

 

[StarTech]

But it should sound like it is laboring more under load.

 

[barely handy]

I do not see a model number anywhere. Just Troy-bilt 2700 Max PSI 2.3 Max Psi. There is an engine serial number but I don't think that will help much.

There are two black plastic arms in that picture that pivot. When I ran it last, it seemed that they weren't operating in a linked fashion. It may have been bumped and knocked out of proper alignment over the winter. How can I find out how they should be aligned/linked?

 

[StarTech]

If it is an engine serial, I should be able to lookup the engine actual model depending the age of the engine.

 

[ILENGINE]

Something I noticed from the pictures is the choke return spring is binding on the thermostat actuated arm that opens the choke when warm. That spring shouldn't be rubbing on the other pivots. So possibly something wrong with the arm that spring connects to. Worked on a similar model last fall that had issues where the choke would open correctly when first started but when a load was applied the choke would close partially and would hang up on the throttle arm that was supposed to hold it open.