B6100 New purchase

Hi,
New to this forum and to a Kubota B6100 which I recently purchased. The previous owner had parked it outside under a hedge for a long time so its in need of some TLC.
Mechanically it seems in good order, starts and runs well with a nice engine note, all the gears work, hi and low and forward and reverse. The tin work is fair for a tractor of this age, it still has most of it anyway, and nothing that can't be repaired. A new set of tyres have made a big difference but there are a couple of issues I would like some advice on if anyone can help.
I am trying to find an original pattern seat, mine has completely rusted through and not repairable. Is there anyone in the UK that can supply one, I have struggled online to find a supplier.
Secondly my B6100 does not have any charging alternator or dynamo...is this correct? If not (and how can it be?) what would be a suitable replacement and where does it fit on the engine?
Hope there is some advice that might push me in the right direction.I have searched this forum but could not find any relevant answers so thought I might post this request.
Any help appreciated.

Tim

Hi 85Hokie,

Thanks for the swift reply, I love it when someone proves what an idiot I am!
Been looking at the "water pump" for a while thinking, how does the water get through it with the top rad hose being where it is....?
I am presuming that the dynamo is of the permanent magnet variety, hence it's size.
I will run it up and see what I am getting out of it...if anything!

Cheers.

Thanks for the lead on the WSM , I have downloaded the relevant pdf and will give it a read.

Ouch!
Will let you know how I get on when I give it a run and put the meter across it. Fingers crossed!

Well I have given it a run and put the meter over the output of the dynamo and....siltch!

No volts, nothing!
Did a continuity check and couln't get any resistance across the windings!
Not looking to good so far.
Does anyone know what resistance I should be getting...if any?
Also should I be able to detect any external magnetism from the permanent magnets. the dynamo is still on the tractor at present!

Thanks.

Thanks Hokie and Sam,

Tested out on AC and got a reading!
Tick over was around 20v and just over 30v when at WOT.

Battery was reading 12.97v when running and ...12.97v when not! So I am presuming regulator is not working although I have next to check the wiring loom with the meter to eradicate any broken wires or dry joints.
The regulator looks like a sealed unit so it's either good or busted I presume.
Getting there slowly thanks to all you guys.