Timberwolf tw125 kohler engine year 2000

[Dan Maynard]

630 and 690 look very similar, I'd take the 690 for a bit more power unless it's stupidly more expensive.

 

Unipower rings a bell, I think maybe where they got the engine.

[Mark_Skyland]

Plenty of good advice above. The Honda doesn't look too expensive at all. I would replace the engine rather than trying to get it repaired unless you know a decent mechanic but im sure that the kohler parts will still be available. You may need to check the pulley that connects the engine to the cutting disk and I'm not sure how the hydraulics work on those machines but I'm sure timberwolf or a timberwolf dealer can advise you. I've replaced  engines on a few chippers and stump grinders in the past, it isnt that difficult to get it done.