John Deere 850 tractor data is as below:

Make: John DeereModel: 850Years Made: 1978-1988HP-PTO: 22.27HP-Engine:HP-Drawbar: 18.9HP-Range: 22Engine-Make: YANMAREngine-Fuel: DIESELEngine-Cyl(s)-CID: 3/78Transmission-STD: SGOptional:Fwd/Rev Standard: 8/2Fwd/Rev Optional:Mfwd-Std/Opt: OPTTires-Std Front: 5.00-15Tires-Std Rear: 11.2-24Wheelbase-Inch: 64Pto Type: INDPto Speed: 540CAT I-3pt Hitch: TrueCAT II-3pt Hitch: FalseCAT III-3pt Hitch: FalseHitch Lift:Hydraulics-Type: OPENHyd-Cap: 19Hyd-Flow:Hyd Std Outlets:Cooling Capacity: 6Fuel Tank Capacity: 8.5Cab-Stdm A/C; Rops:Weight: 2350New Price: 10157

Today we serve a customer with this engine. Overhaul kit for Yanmar 3T80J. It's a quite old machine but with new components, we believe the tractor will run further.