What the thread found

• A Master Arm can be detuned by removing black plastic spacers inserted by the manufacturer to reduce lift capacity, which allows recovery of original lift specifications.
• Spring tension on a Master Arm can be adjusted by loosening or tightening bolts on both arm sections equally while the arm is not under load, enabling a custom weight range between approximately 15 to 70 pounds.
• The adjustment knobs on a Master Arm provide only 25 pounds of fine-tuning range, so base spring tension must be set first to achieve the desired weight operating window.
• A low profile ratcheting hex tool with a 3/16 inch Allen bit allows convenient spring tension adjustments on set.
• Cable twisting must be avoided during any spring tension adjustment work.
• Professional consultation with a spring specialist is recommended before attempting modifications beyond standard detuning procedures.
• A typical Master Arm when properly tuned operates in a 25-pound weight range, with reported maximums around 68 pounds when springs are fully tensioned.

Depends on

• The discussion does not clarify whether spring replacement itself is possible or practical.
• No detailed technical explanation of the spacer removal process was provided.
• The reported maximum weight capacity of 68 pounds comes from a single user experience and may vary.
• Specific instructions for identifying and safely removing spacers were not included.
• The thread does not address potential warranty implications of user modifications.

Gear in this thread

G-70catalog

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