I've had my 3 cyl. for 2 years now but I loaned it out and it came back with a broken 4wd axel gear. Parts are near impossible and $$$ so I'm about to part it out.
Dave: does it say "iseki" between the head light's ? if so, White also sold this as one of theirs. as a Fieldboss 16. you could also put a straight axle instead of the 4wd unite. good luck mike