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Vince O.
Vince O., Small Engine Technician
Category: Small Engine
Satisfied Customers: 2832
Experience:  Over 30 years experience repairing lawn and garden equipment. Chainsaws, mowers,blowers and trimmers
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I am unable to remove the bump knob to gain access to the

Customer Question

I am unable to remove the bump knob to gain access to the spool of a M2500 curved shaft 2 cycle trimmer. Any suggestions for removing it will be greatly appreciated. The spool will not turn. Thanks. *****
Submitted: 12 months ago.
Category: Small Engine
Expert:  Vince O. replied 12 months ago.

Hello, the problem is the outer hub has a hex molded into it and it fits over the shaft arbor and it is rounded out. You may need to break the knob by popping it off of the square head bolt. Then push own on the spool to expose as much of the shaft you can so you can clamp pliers on it to try to hold it while loosening the square head bolt

Expert:  Vince O. replied 11 months ago.

Any luck?

Expert:  Vince O. replied 11 months ago.