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Adjusting motorcycle steering bearings without castle nut tool

M
Max
5 minMay 20, 2026
Adjusting motorcycle steering bearings without castle nut tool

Without the dedicated tool

Use a punch + hammer in the castle nut notches. Tap clockwise gently to tighten, tap by tap. Risk: deforming the nut if too rough.

Adjustment test

With the front wheel off the ground, set bars to 30° off center. Release. The fork should fall gently back to center without snapping or sticking.

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Source: Official workshop manuals

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