thou8ght i reconized the code,ive got 1 of these tucked away in my garage,beast of a tool,
iirc there are either allen key bolts to undo or a nut that requires a thin spanner,undo these and the blade should just slide out,they may?be stuck with sap/crud so either a small ammount of oil or 'GENTLY' tap the blade,only do this if you are sure the block is loose.otherwise the blade could shatter all over you.
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