Questions & Answers for: McCulloch challenge xtreme

...are NOT interchangeable. I changed the oil pump on a 11-600016C and removed the housing. It is a challenge. Good luck. HTH Lou I had the same problem on my 2.0 eager ******. I wrapped the plug

challenge xtreme 1800w chainsaw model gcs350n Per your service manual or I recommend contacting your local authorized service center for assistance. You may contact the manufacturer, download manuals,