Have twin engines both with ZF Hurth
27hp 3cyl kubota based engines.
Both gearboxes died within 50hrs of each other
Case hardening came off the face of the teeth.
I would advise against using this brand.
My opinion of then is
1/. Over priced
2/ poor design
4/. Poorly built
5/ warranty not worth the paper it is written on
Have now gone to twin disc, don't have enough
Hrs to have an opinion on them yet,
But they are significantly cheaper.
Even if they only last 400hrs they are
Still far better value for your $ than ZF
ZF was far from helpfull during this issue.
From what ZF told me it appears that the ZF
warranty starts the minute they are built!!!!!!
Not from the purchase
date or install date.
Had to buy a new box in the middle of a
trip, this gearbox
was a couple of years old
but still new.
ZF would not give a warranty, despite being
purchased from a ZF dealer.
I WILL NEVER BUY A ZF HURTH PRODUCT AGAIN.