Hello Solirossi,

Welcome to the ODK forums.
The 2,5 Kirby is known for being quite reliable.
The big issue may be spare parts down the track.

The main issue is the quality of the 'restoration' and the particular model.
Has the machine been sharpened and set? Will it be your everyday mower?
Any information may help the experts here.

Hope this helps.
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JACK.