Buell 2008 XB SERIES Electrical Diagnostics Manual page 26

Starter Spins But Does Not Engage: Starter Test 5
Housing assembly. Inspect for damage
1-12 2008 Buell XB Diagnostics: Starting / Charging
Remove Starter. Disassemble Drive
to Armature Gear or Idler Gear.
Is damage present?
YES
Replace damaged Idler
Gear and Armature.
5825
NO
Starter Clutch failure.
Replace Starter Clutch.
5837
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