My honda mower revs up and down for a good 7 minutes when cold. It also needs the choke on for a good minute or so.
It didn't use to do it when new but has been doing it for the last 5 years.
Spark plug is new. Oil is new and M1 5W30.
It's a 2003 160cc model, this one: http://cdn.powerequipment.honda.com/pe/pdf/manuals/31VH7H20.pdf
Any idea when would cause the rev oscillation? It changes from low rev (almost stalling) to high rev every 2 seconds.
It didn't use to do it when new but has been doing it for the last 5 years.
Spark plug is new. Oil is new and M1 5W30.
It's a 2003 160cc model, this one: http://cdn.powerequipment.honda.com/pe/pdf/manuals/31VH7H20.pdf
Any idea when would cause the rev oscillation? It changes from low rev (almost stalling) to high rev every 2 seconds.