Nice 026. 260 is basically same saw and also came standard and PRO. Great little saws that should last a lifetime.
Dont worry about the oiler. I used to, but it means nothing in the real world. Even if you let it sit idleing, it’s running at 20% the rpm and oiling at that rate as well.
As for the carb, they are finicky. New Walbro 194 went up in price on eBay. Used to be $40, now 50-60 bucks. You can try a rebuild kit first, but I’d probable toss a new one on and don’t look back. You can spend $10 on an oem rebuild kit, but you may not have success. Sometimes the little passages under the Welch plug gum up and need to be cleaned out. It’s a learning curve and you may be throwing an extra $10 away instead of saving $40.