Why won't my Exmark Quest Lawn Mower engine start?
- MmatthewmarquezAug 12, 2025
If your Exmark Lawn Mower engine won't start, starts hard, or fails to keep running, several factors could be the cause. First, check if the fuel tank is empty and fill it if needed. Ensure the choke is on. A dirty air cleaner can also be the culprit, so clean or replace it. Inspect the spark plug wire(s) to ensure they are properly connected. Replace any pitted, fouled, or incorrectly gapped spark plug(s). Other potential issues include a dirty fuel filter, dirt, water, or stale fuel in the fuel system (in which case you should contact an Authorized Service Dealer), incorrect fuel in the fuel tank (drain and replace with the proper type), or a low oil level in the crankcase (add oil to the crankcase).