D
David JacksonAug 13, 2025
Why does my Cub Cadet CC 550 SP engine fail to start?
- AAmy CollinsAug 13, 2025
Your Cub Cadet Lawn Mower engine might fail to start due to several reasons. It could be that the blade control is disengaged, so engage it. Another cause might be a disconnected spark plug boot; connect the wire to the spark boot. The fuel tank might be empty or contain stale fuel, in which case you should fill the tank with clean, fresh gasoline. If your mower has a primer, the engine may not be primed, so prime it as instructed in the Operation section. Other potential causes include a faulty spark plug (clean, adjust gap, or replace), a blocked fuel line (clean it), a flooded engine (wait a few minutes to restart, but do not prime), a closed fuel valve (open it; see the engine manual), or the engine not being choked (choke the engine; see the engine manual).