It is extremely difficult to start. I've checked the fuel line which is fine and the carb bowl fills with fuel. According to Plano Power Equipment, a somewhat common reason for a hard start in Honda mowers is the throttle cable being stretched out. If the carburetor is clogged, you can usually get the mower going by spraying starting fluid through the air filter orifice after removing the filter cover and the filter. They make mowing and cleaning up afterwards a lot easier than other standard mowers. Dropped some fuel in the cylinder and it fires right up and runs fine. Very easy to start, mows/mulches great, runs quietly, very pleased! Find the most common problems that can cause a Honda Lawn Mower not to work - and the parts & instructions to fix them. I checked the spark plug and it was bone dry. If it fills slowly, the mower cuts out, but can often be re-started after it's been left for a while (because the bowl re-fills). Honda has a series of eco-friendly lawn mowers to fit different gardening and yard grooming needs. I checked the spark plug and it was bone dry. Dropped some fuel in the cylinder and it fires right up and runs fine. There are two ways to start them. Jonsered L2621 21 in. Find the most common problems that can cause a Honda Lawn Mower not to work - and the parts & instructions to fix them. I have a Honda walk behind, self-propelled mower - HRR216SDA. Some Honda mowers won't start if the oil level is low, this isn't a flaw, it's designed that way to protect the engine. If the lawn mower engine stops suddenly due to hittin...g a hard object, the flywheel key breaks in half to prevent damage to the engine. My Honda HRX217 lawn mower won't start. Honda has improved the design of the choke and your mower may benefit from this new part. What’s more frustrating than a lawn mower that won’t start? I've had several Honda mowers over the years, (4 in all) and they keep on getting better! One way to narrow down the cause of not starting is to work through the common issues until you can get your mower running again. While that might sound like a pretty big issue, it’s almost always caused by a brief operator oversight.