It's too inconvenient unless you can use it at that particular angle. Otherwise you run out of propellant in the mean time. I often have trouble with starting fluid cans that aren't nearly full. I have to shake while spraying, or tip up & spray to prime the tube, the tip it into the intake and...
WD 40 can run out of propellant sometimes leaving you with a good bit left over in the can. That's only half the reason why I drained a few ounces out of a big can. The other reason was that it sprays out as a relatively weak and very foamy stream. I wanted a non foamy high pressure jet for...
Tip up side down, and slowly drill a hole in the bottom lowest point of the cans, then maybe one in the top too to help the stuff drain into your spray bottle. I just keep it in a jar and syringe it out and apply with a blunt tip needle. I've washed magnesium dust out of Chinese kit saw bearings...
I'd hate to have it break and hit me.
Rubbing alcohol might make a good lube since it is strangely slippery, but dries very fast. 91% would be better than the common 70% so less water is left over and it dries faster.
You have to learn to let the stress go. It's not easy, I know, but you'll get better at it with practice. Put on some good headphones, turn the lights off, and listen, don't watch, to this
Saws are mostly magnesium now. I don't know, but magnesium might be easier to fix with a self tapping screw. Manufacturers commonly use them: slightly triangular screws with either machine threads or coarse threads like what's used in plastic. I don't like it because it makes a mess of metal...
Can you JB weld a nut on the back side of the hole? You can get brass threaded inserts from mcmaster-carr often found pressed into nylon, like what the carb screws go into on a 201t handle. You can drill the hole out, clean and dry it well, and JB weld a brass insert in there. I've used one to...
Use Alkylate fuel like the overpriced Stihl Motomix, or the more affordable Aspen 2. I'd add a little extra Echo Red Armor oil to either. Engines will richen up in the heat and humidity. Make sure the air filters stay clean.
I already knew this stuff, but most people don't really understand how things work, or consider the small details that makes things work, so I like videos like these:
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