The pics show a much different belt guard to my Platinum and Pro models. The side pieces are too far away from the belts, the taut belt side should be no more than about 1/8" from belts near top. The idler side is just a little more than 1/8" from top of belt. The forward part of guide should be much higher and slightly over (and in front of) the pulley with an arced shape. When the clutch is released the belts contact the guard and are forced upward to provide clearance for pulley(s) to move freely without contacting belts.Today I fabbed up a new belt guide. That was no easy task with the tools at hand that I have. It's not perfect but it will work, maybe needs a little tweaking with the proper amount of washers to get it placed perfectly. I'm happy with the outcome. Also need some shorter bolts, I'll get some soon. Also good news, I ordered the new belt/pully cover today and it was $9.92 !!! Can't beat that. I had them check the price twice. It's pictured with the old one. The old one just wouldn't work but the bolt holes are the same thread. View attachment 194087 View attachment 194087 View attachment 194086
The adjustment on the 926501 requires a gap of no more than an 1/8" or the taut side (opposite the idler side). Your 2021 Pro should be the same as my 2022 Pro, at least the adjustment should be the same, and the same as your 926501.I made the belt guard to closely resemble the old one and the one on my 2021 28" Pro. They are certainly different than yours. I guess I will just have to wait and see if they work of not. The easiest option is to cut off the end and make it 2 individual adjustable pieces. The bolt holes are farther apart on the new engine. Enough of a difference that bending a stock one to fit seems out of the question.