Try this [https://opeforum.com/threads/mculloch-mini-mac-6-rebuild.12865/|forum] and contact the user who has the service manual for the chainsaw.
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Try this [link|https://opeforum.com/threads/mculloch-mini-mac-6-rebuild.12865/|forum] and contact the user who has the service manual for your model chainsaw. Scroll down towards the bottom of the page.