I have a
B7200 with a B1640A loader. The operating manual for it is dated 3/86. Quoting the first section of the manual:
The Kubota Model's 1640 & 1640 Loaders have been specifically designed to mount on "B" Series Kubota Tractors, only!
One of the following mount kits is required to install the B1630 Loader to the applicable Kubota two or four wheel drive tractor.
1. B1633 Kit for
B5200 E & D tractors.
2. B1633 Kit for
B6200 &
B7200 Gear tractors.
3. B1634 Kit for
B6100 &
B7100 Gear Tractors.
4. B1635 Kit for
B6100 &
B7100 HST Tractors.
5. B1639 Kit for
B6200 &
B7200 HST Tractors.
The B1640 Loader, as received, will fit all 200 series Kubota tractors, thru the
B7200. It will not fit the older 100 Series Tractors. No special mount kits are required for fit up to the following Kubota Tractors.
The B1640 loader has been designed primarily for use on the
B6200,
B6200 and
B7200 Gear tractors, but is not compatible with a mid-mount mower.
Unfortunately the manual’s English is a bit stilted. It does not specifically identify the differences between the two loaders.
Further in the manual under assembly is the following:
The B1630 Rigid Mount and the B1640 Quick Attach Loaders have been specifically designed to mount on “B” Series Kubota Tractors.
Hopes this helps!
Barry