Both are induction hardened so other than the chain being so tight, its very probable both are OK.
- That said, you likely rode it with the nut missing and under load, that could have damaged the splines.
- If it were mine, the bare minimum would be nut, washer, and drive gear unless the gear shows NO signs of being loose on the shaft (think rotate for and aft in place. If it remains snug, you could reuse it. If its loose, you don't want to risk MORE damage to the shafts splines.
- Hopefully the threads are OK!
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With bike on center stand, throw block of wood under the rear tire so there is little to no gap.
Loosen axle nut, remove axle, slide wheel forward.
Remove front sprocket. Clean and inspect sprocket and shaft for wear, fit, and damage.
- That said, you likely rode it with the nut missing and under load, that could have damaged the splines.
- If it were mine, the bare minimum would be nut, washer, and drive gear unless the gear shows NO signs of being loose on the shaft (think rotate for and aft in place. If it remains snug, you could reuse it. If its loose, you don't want to risk MORE damage to the shafts splines.
- Hopefully the threads are OK!
&&&&&&&&&&&&&&&&&&&
With bike on center stand, throw block of wood under the rear tire so there is little to no gap.
Loosen axle nut, remove axle, slide wheel forward.
Remove front sprocket. Clean and inspect sprocket and shaft for wear, fit, and damage.