check your local classifieds; check with a dealer who takes trade-ins. Check with an on-line site such as Craigslist or the auction sites for completed sales.
2) Increasing returns it cost $60 per mower when making either 300 or 400 mowers, but only cost $48 per mower when making 500. Assuming she charges the same price for mowers, her returns are greater (increase) when she produces 500 compared to 300 or...
If this is a typical push-mower (not a riding type), there will be a drain plug on the bottom of the engine. It would be best to set the mower up on blocks, saw horses or whatever you can find to make it easy to get under it. You will need a pan or b...