While you wait for answers, we may have found some information which could help you.
Click here for Spare Parts MccullochMcculloch 2818 Runs fine but spool will not spin?
how do i get my pull start to recoil ?
2 Stroke strimmer not running?
how to change mcculloch sl trim head?
Where can I buy a strimmer spool spring for my McCulloch MT270X strimmer?
how can i fix mcculloch mt270 strimmer?