oh.
i pretty much stock the flat panel filters, the foam filters, 20, 21 and 22" blades in Murray, MTD and AYP..and 1 common Toro blade.
For riders, I stock 42" AYP, 46" AYP, 42" MTD blades...upper and lower bearings for common ayp, mtd...like 3 bearings.
Then common fuel line, and the 2 common filters.
For carbs, I stock the common briggs 3.5 style diaphragm and gasket set, needle and seat sets for most small inteks and quantum engines...a 5hp Briggs carb overhaul kit, a briggs small 2pc flo-jet overhaul kit...
Briggs and Kohler oil filters (2 part numbers)
Briggs intek short and long style rider air filters, Kohler Courage twin and single air filters, Kohler command twin and single air filters...
RB21 carb kit, K20WAT carb kit...covers most common carbs for 2 strokes.
6616 and 6617 fuel lines, and ROT4996 filters...fits MOST 2 stroke equipment
All told, Id bet I dont have over 300 dollars in inventory....and I can store it all on a small desk in rubbermaid containers, and a few nails in the wall for blades to hang on.
I make 1 order a week from STENS and 1 order a week from parts tree, this covers replenishing my stock, and special ordering stuff...if people cant wait up to 1 week for their parts, they can go elsewhere and wait a month...
Service a rider...lets say a LT1000 sears..with an intek Twin...
Change the oil, oil filter, fuel filter, plugs, air filter, blades (46"), clean it, level the deck, and out the door.
Parts cost about..35 dollars, or less...and it takes about 45 minutes tops to do it all, charge is $65 labor plus about $70 for parts, total with tax...about 145 dollars...
Thats the sweet spot....
PLUS..if it needs belts, you put em on your order pad, and lets say, every monday you order...so you order a PTO belt, pay 7 bucks for it + shipping (break up shipping over xx parts) and charge 20 for it, charge 20 to put it on, etc. etc...
Its good money and honestly not alot of parts, and not alot of work....but the beauty is, when it becomes "work"...like..Doing upper and lower drive belts on an MTD rider, you charge for it, heavily. People will pay it, because most shops back-burner those jobs because that dont have the patience for it.