The rubber straps stretch to fit. It requires some hand/arm strength without tools. It's easier to install the plug using linesman pliers or something similar. Install the metal hook on one side then grab the other metal hook with linesman pliers. Use both hands on the pliers then pull the hook to the hole and attach.

I attached a plug without tools for my next door neighbor. It took some "grunt" by hand.

-Deerslayer

Thanks for the info. I also called Sears and a lady in the parts department said the kits had the wrong straps in them. They're going to send the correct ones (hopefully) next week by UPS.

Marvin

Thanks for letting us know the outcome.

-Deerslayer

There's more follow up:

The person I spoke to in Sears parts department said she was familiar with the problem I spoke about, and she assured me they would send the correct (longer)strap.

Well, guess what? They sent the exact strap I already had, which was the wrong one. Oh well.

Marvin, I have the mulch cover for my Bob Vila Craftsman tractor, but don't know where it goes.....can you tell me where to attach it please?
Jan

I found my manual, after some digging....so I know where it goes now....:)
Jan

Glad you found the info. The mulch cover on our mower fit "perfectly" over the grass exit hole; but not the rubber straps. I wound up using wire to hook the straps on, with the wire adding the extra inches the straps needed.
Now, even after all that, turns out our grass is too thick with 2 weeks growth for the mulcher to handle it, so we removed the mulch cover and let the grass blow out the side. That's working pretty good. Stupid 'trial and error.' :-)