Hello 1077803,

I wish we had another option for you, but all we can supply is what the manufacture supplies to us.

-WJA

Hello 2popawsandawalnut,

The drive belt part number A100539 is still available, and you can order anytime.

-WJA

I am guessing that your engine is a Briggs & Stratton. To get the correct specs we will need to know the model number located on the valve cover. If it is not a Briggs, let us know the manufacture and we will get the information you need.
Thank you,
WJA

I just happened to replace mine this weekend. It's pretty easy. Note the hex-shaped stamping in the center of the guide. I had to scrape a bunch of dirt and crud off the old one to even see it, much less get a wrench on it. Use that to loosen the old and screw on the new. I removed the entire cutting assembly (four bolts on the top of the housing) for a better way to steady the moving assembly, but I'm not sure that was necessary if you use a vice gripe to lock the assembly as you unscrew the guide with a socket wrench. If you do remove it, make sure the belt is properly in the pulley when you bolt it back on.

I don't know why yours wore out so quickly, as mine took three or four seasons for ground friction to cut a circle in the middle, leaving a 1.5 center on the trimmer and the bowl on the ground.

This model uses a four cycle engine which means that the gas and oil are separate. If you look at diagrams in this site you will see that the gas and oil have separate fillers.