Kubota Tractor Engine Starter Motor | OEM 1G069-63010

Zero-turn mowers are harder on a starter than tractors are, since a commercial crew may fire the same machine a dozen times before lunch, and the unit Kubota put behind that duty draws twelve volts, turns a nine-tooth pinion clockwise and is rated at 1.1 kW — a Denso planetary reduction motor built to spin the D1105 three-cylinder diesel. 1G069-63010 covers the ZD25 and ZD28 of the early 2000s, the ZD321, ZD326 and ZD331 that stayed in production until 2017, and the GR2100, GR2110 and GR2120 garden tractors that used the same engine in a lighter frame.

OEM and Search References

• Primary Kubota reference: 1G069-63010, revised through 1G069-63011 and 1G069-63012 in the later books

• Denso numbers: 428000-1160 and 428000-1161, the pair a rebuilder will recognise before any Kubota number

• Also catalogued as: 77700-02596 in Kubota whole-goods numbering, a route some dealers still search by

• Aftermarket: SND0476, WAI 410-52242, LRS02702, Stens 435-030, 18413N, STR70293 and Lester 18413

• Ratings: 12 V, 1.1 kW, nine teeth, clockwise rotation, and the Denso PLGR planetary reduction drive behind them

• Engines: the D1105 three-cylinder diesel, shared by the ZD mowers and the GR garden tractors alike

• Fitment: ZD28 2002-2006, ZD25 2005-2006, ZD321 2007-2011, ZD326 and ZD331 2007-2017, GR2100 2005-2007, GR2110 2008-2009, GR2120 2010-2014

Fitment and Purchase Checks

The machines on this list share an engine and a mounting, and they share a working life that is unusually hard on a starter, since a ZD331 with one commercial mowing season behind it has probably been cranked more often than a utility tractor twice its age. That makes the ordering check worth doing properly.

The 1G023 motor used on the smaller GR and BX machines looks close enough in a photograph to cause real trouble, and only the housing type, the rated output and the number on the plate separate them. Send those details with the enquiry and the quote comes back firm on carton price, stock and dispatch.