yes
Go to this link and it outlines all Briggs and Stratton engine types and spares including spark plugs. http://www.manddsmallengine.com/briggs/parts/ Most common plug used in B&S is a RJ19LM
abrasive grit, probably used in sandpaper
SAE 30 full synthetic.
Yes, and I highly recommend you use synthetic in an air cooled engine.
The word 'hone' can be either the noun or the verb form. There is also a gerund, honing. The noun 'hone' is the word for the whetstone or machine that is used to sharpen blades.
Also called a flex hone or flare hone, or bottle brush hone, looks like a bunch of balls on the end of stalks around a shaft. Used to break the glaze on a cylinder but not to enlarge its diameter like a stone hone can. Bottle brush hones are the least precise and easiest to use hone, but of limited application.
Grit is a word used in specification of grinding wheels. It is used with numbers. Grit means size of the grinding wheel abrasives. So 60 grit means the abrasives filtered in a sieve of size 60(60 slots/inch)
Hone can be used as a noun or as a verb. As a noun, it is a whetstone used to sharpen razors. As a verb, it can mean to sharpen something, or to make perfect.
On engine used only in warm weather use straight 30 weight. On engines used in cooler temperatures use 10W30 any major brand.
It is used to aerate the softdrinks
The VR2500 uses a Briggs and Stratton 4 cycle engine. No oil is mixed in the fuel.