While you wait for answers, we may have found some information which could help you.
Click here for Mcculloch Iv Blowerhow can i fix mcculloch mt270 strimmer?
Mcculloch 2818 Runs fine but spool will not spin?
2 Stroke strimmer not running?
How can I replace electric cord on mcculloch air stream electric blower?
Where can I buy a strimmer spool spring for my McCulloch MT270X strimmer?
How can I fix my weedeater?