Well, I'll be d4mmit and go to he!!"
This thread got me motivated to put a little TLC into the old Giant-Vac.
Since it was slipping drive belts I started looking for replacements. It seems that the Dayco 41-0209 belts that are on it are a bit obscure, or at least out of stock. These are doubled up 1/2 belts, so a bit special.
Some interweb references listed alternate belts, but on digging into the specs, all were longer than the Dayco fitted (51.25").
Needing to have a look at the belts to make sure of the length, I pulled them off the machine to have a look.
Well, one thing that struck me was how worn and shiny the center rib was on the drive pulley. I thought that might be normal for the pulleys to "high center" when the belts wore out. I thought also to clean up the belts just to have a look for wear, dryness or aging. (I have the receipt for those belts when they were replaced in 2004 ;-)
Though the sides of each belt do definitely show wear, both were actually in pretty good condition. What was evident however was that the center V on both belts was PACKED with fibrous vegetative material! Well blackened, but looked a lot like maple leaf MULCH.
I do use the mower to double and tripple cut autumn leaves and blow them into a windrow to be picked up in the yard trailer.
So I took a steel brush and an old straight blade screwdriver to clean out the center grove "W".
Put everything back together, adjusted the control rods and links,
VIOLA! Darn thing pulls like a draft horse!
On inspection of the "newer" Bobcat mower, I see there is a formed metal scraper that is positioned on the drive belt lower run that appears to be just right for keeping that groove clean. I need to look more closely to see if it is adjustable.
Part of the "value" I see in the Giant-Vac is there are so many common parts between the two machines. Wheels, tires, spindles, tension pulleys etc., even the engine and peerless transmission are direct swaps!
But to be honest, Now that the Giant-Mow works so well, I won't feel bad to see it go to a welcoming new user!
;-)
eta
I have had ZERO luck useing any of the search functions on the many belt suppliers offered by thoughtful responders. (Thankyou all!)
Perhaps it is my computer that is at fault.
Any links to 41-0209 appreciated.