Hi Matt,
What I find entirely bizarre is that the V Idler Pulley that I'm having most trouble with is not a single pully with bearing like the other three in the drive belt path, instead it is a large bearing with snap ring and bearing adapter, two half pulley shells and two washers with that bearing and bolt assembly rotating with the inner race of the bearing, with the outer race of the bearing mounted to the support plate by two spacer plates that hold the snap ring. That's using ten pieces to do what the other idler pulley does with five.
The 10 pieces is made to take a load because it's on the drive/tension side of the V belt and the five pieces
pulley is on the slack side of the V belt and not under as much load.
Good to know what manual the images I found were from as I thought the engine listed in the manual was bigger than 12.5.
Cheers
Max.