Can't think of any saw fixes right off the top of my head. But...
Ninja 900 blew a 30 amp fuse and left me stranded on the side of a busy freeway for a few minutes until I found an aluminum can and broke the pop top in half and stuck it in there in place of the fuse and was on my way.
Cotter pin came out of a lower ball joint on an old Supra letting the nut back off and the spindle came loose putting the left front a-arm on the ground.
I was going slow around a corner when it happened. And miraculously, I found the nut and a nail that fit perfect and had it rolling in just a few minutes.
Have started dismantling a hazardous old elm that's been slowly dying for the past decade or more. It's precariously situated a couple of feet from the house, and a few feet from a power line, and about twenty feet from the front fence and forty feet from the side fence, with large, high, not so sturdy limbs in all directions.
I've been up on top of the house nibbling away at the small ends of the branches I can reach with my 16 foot reach(with 4' extension) PPT-2620.
Before I get it ready to drop I will have done my greatest McGyvering with rigging these big, heavy, high, wide-spreading, unstable limbs from afar to lower them safely to the ground.
I expect to incorporate all manner of lines, ropes, straps, cables, chains, pullies, snatchblocks, ladders, a bow and arrow, heavy plywood and 4×6's along with some large cedar poles, an 11,000 pound pickup, and probably three or more different chainsaws before the trunk finally hits the ground.