Revving up and down is usually a symptom of a dirty air filter.
The governor spring adjustments
Governor hunting or surging is a problem that causes the engine to constantly speed up rapidly and then slow down rapidly.
According to " Outdoor Power Equipment By Jay Webster",Governor hunting or surging is a problem that causes the engine to constantly speed up rapidly and then slow down rapidly.
If you mean the engine will rev up and down as it is running, it has been my experience that a dirty air filter is a cause of the fluctuation.
Hi, The float valve is leaking through. The fuel can leak in the intake and down into the crankcase, where it dilutes the engine oil.
when the engine weres down
When one of the lawn mower's wheels enters the grass it causes the lawn mower to slow down due to friction. If you keep pushing on the lawn mower, the wheel on the grass will act like a moving pivot, and the lawn mower will turn to a different angle.
The kill wire from the coil typically connects to the ignition switch or a safety mechanism that grounds the ignition system to shut down the engine. This connection enables you to stop the mower engine by turning off the switch or engaging the safety feature.
What causes a 1998 Pontiac transport to run hot and engine shuts off
Antifreeze absorbs and releases heat constantly. Over time, this causes the antifreeze to break down.
To properly tip a lawn mower for maintenance or repair, first turn off the engine and allow it to cool down. Then, carefully tilt the mower on its side with the air filter and carburetor facing up to prevent oil and fuel from leaking. Make sure to support the mower securely to avoid any damage.
Either a faulty engine temperature sensor or the wiring to it.