What the thread found

• The lift knob on a G70 arm may rotate out of position during booming movements due to worn threads in the lift adjuster, wear in the carrier bearing, or a loose adjuster mechanism that flexes during operation.
• A locking bolt located under the lift knob can be adjusted to secure it in place, with the correct tightness being critical to maintain position without the knob rotating during arm movement.
• The factory recommends sending the arm in for service to tighten the adjuster and replace worn parts if the problem persists.

Depends on

• One user reported the issue on G50-G70 models without specifying which exact generation was affected.
• The quick fix with the locking bolt under the knob was confirmed only on a G50 model, though the user suggested G50 and G70 should work the same way.
• No confirmation was provided that the locking bolt adjustment alone resolves the problem on all G70 units.

Gear in this thread

G-70catalog

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