I would spend the time, but thats me.
Cut wire to key,,,, most have the wire also connected to the speed control. When turned all the way to low, it will short the ignition, just like the key does when removed and shut the engine down. Not a big deal.
Stalls,,, Under the carb bowl is the high speed jet. Turn it in ((BY HAND))until it bottoms,,, don't force it. Then turn it out 1 1/2 turns. See how it runs. If still stalling, open another 1/8 turn. Repeat until it runs without stalling. You may have to do the same after you put a load on it (blow snow) if it bogs.
Shear pins,,,, if replaced with shear "bolts" there's no difference. If replaced with a higher grade bolt, you will bust something before the bolts shear. There's also 2 grease fittings next to those shear bolts, give them a few pumps of grease.
Also there's a grease fitting under the friction wheel. Stand the blower on its front, remove "belly" cover. You may have to rotate things a bit to see the fitting. Don't over grease that!