G'day all

This is a 10 Series 4hp.
A squeal coming from the starter assembly will be as Norm says -
when the starter clutch goes dry they can grab.

If the recoil turns fine (when removed) the culprit will be that
clutch grabbing (I think). Prying off the clutch cover and applying
light oil should fix the problem.

Please let us know how you go.
A sort of procedure may be found here:-

[video]
[/video]
Source:


Hope this helps.