My Countax C600H mower is losing drive when warm and struggling with slopes. Replacing the belts has made no difference so it seems that it's the transaxle - a TuffTorq K46 (judged from the parts diagram). Mr Google seems to think that it's a common problem, there's a good overhaul write-up here:
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but the overhaul kit is quite pricey and needs to come from the US. Has anyone here had any experience of overhauling these transaxles?