Before anything else: when you pull the rope or turn the key, does the engine turn over? That single observation splits this problem in half, and the two halves have nothing to do with each other. Thumbtack’s national range for a mower that won’t start is $105–$256. Several causes on the manufacturer’s own list are…
Reported walk-behind repairs average $125 and riding-mower repairs $175, with most bills landing between $75 and $550 (LawnStarter, updated December 27, 2025). That is the headline number. The guides publish both ingredients and never combine them. LawnStarter prints a sixteen-row parts table and a $55–$135 shop-rate band on that same page; Thumbtack’s only carburetor price…
On a walk-behind mower what broke answers the question — not what the repair costs, and not how old the machine is — because the bills are bunched at the two ends and the middle, where break-even arithmetic would earn its keep, is empty. Look at the two columns together: What failed Typical shop bill…