It's J74 model and came with the 448 whenI bought it. Made in 1980, it has some miles on it, but is in surprisingly good shape. This is a hydraulic drive tiller, like the one here (scroll down):
The hydraulic drive motor had a slight oil leak, so I ordered a seal kit from Brian at Salem Power Equipment. Got that today. Bearings are coming from FC Mason: http://fcmason.thoma...&origin=keyword
I have a box of #50 roller chain to replace the drive chain, since the tension adjustment was in the last hole.
The trick to this is getting it APART. The tiller main shaft is made of 3 pieces, the long center part, and a stub shaft pressed into each end. I do mean PRESSED in. These have to come apart in order to replace bearings. The old bearings were still usable, but worn and you can't grease them.
I have an 8 pound home made slide hammer that barely got the drive stub out. The other end was worse, but yielded to 48" pipe wrenches and a long piece of 1 1/8" diameter rod banging in the open end of the tube repeatedly. Thought I'd have to get out the torch, but it decided to move.
So, today I am cleaning and painting parts, between other disasters. Trying hard to have all the garden stuff ready when the weather warms up.
More on this when I get farther along.
Edited by machinist, March 06, 2013 - 08:29 PM.