I have a Poulan lawn tractor, Model # PB22H46YT. I can't get the linkage set properly along with the governor linkage? I've been looking for picture of carberator throttle and the governor setting

fuel flow problem or blocked main jet

there must be a spring off or bent linkage
did you try adjusting gov?
go from low to high speed to see if gov is working at all

Here is a parts listing for your tractor. Click on the mower diagram to find your spring. PB22H46YT Parts

If the motor runs good at a low rpm, I want to say your problem lies somewhere in the governor. As you put load or strain on the engine the governor should increase the throttle speed on the motor. My guess is a wire, cable or something is rubbing on the linkage from the governor to the carb, if not the governor my need readjusted. I hope this helps.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/steve_f5a6ca85b5d1ffc9

Are you asking how to reset governor linkage to factory spec? If so, move governor arm in direction that opens throttle valve on carb wide open. Hold in this position. Loosen small nut on bottom of governor arm. With a needle nose pliers turn center arm that goes into engine in the same direction you turned governor arm to open throttle valve. Holding in position, now tighten nut on governor arm tight again. This is referred to as a static setting and is factory spec. Good luck!

I’m happy to assist further over the phone at https://www.6ya.com/expert/layne_0fccff498c319c32

try sears parts online

One possible cause for this problem is debris,sticking,or frozen linkage between the governor and the throttle butterfly. Depending on the make and model of your engine it will either be a mechanical governor that has a arm that goes down into the case or a air vane governor that is behind the recoil shroud of the engine. Move all the linkage that connects between the governor and throttle and speed lever to make sure it doesn't bind or sticks. If it does pray a little silicone or wd 40 spray on it to help reduce friction. Also on air vane governors they can become stuck from debris that inhibits it from moving make sure there is nothing in the way of the governor. If all of the linkage is working properly and you still have the issue try adjusting the the fuel mix screws and the high rev. settings on the throttle lever (if equip.).

Here are various graphics from the B&S Intek Twin governor. Maybe they're close . . .

The easiest thing for you to do is look at another mower that has a single cylinder Briggs at how the linkage is set up. They will all be the same linkage from 12 hp- 20 hp.

try sears.com go to parts and enter your mod# from under your seat IE:358. and so on.
Look around for prompts and info for you mower from your entered mod#