Kubota M Series Tractor Starter Motor | 12V 2.5kW 9-Tooth Gear Reduction | OEM 1G772-63012

A 1997 M8200 that has spent its life on a livestock farm is usually on its second starter by now, and the one it wants is rarely the newest number in the book. 1G772-63012 is the Mitsubishi-built reduction motor Kubota specified for the four-cylinder M range: twelve volts into a 2.5 kW armature, a pinion of nine teeth turning clockwise, and 6.35 kg of castings and copper that changes the courier quote before it changes anything else. Behind that nose sit the V3300, V3600 and V3800 diesels, which carried this starter from the M6800, M8200 and M9000 of 1997-2005 through the M105S and M108S and on into the M6040, M7040 and M8540 sold until 2013.

OEM and Search References

• Primary Kubota reference: 1G772-63012, the number that carries forward to 1G772-63014 in the current parts book
• Numbers it superseded: 1G772-63010, 1G772-63011 and 1G772-63013, all describing the one Mitsubishi assembly
• Cross-family codes: 1C010-63010, 1C010-63011, M008T70971, M8T71671, SMT0179, all listed against this motor
• Aftermarket and rebuilder numbers: WAI 410-48125, LRS04064, 77700-02594, and Lester's 18398
• Ratings: 12 V, 2.5 kW, 9 teeth, CW, Mitsubishi OSGR reduction drive, 6.35 kg dry
• Engines: V3300, V3600, V3800 four-cylinder diesel
• Fitment: M6800, M8200, M9000 1997-2005; M105S 2005-2007; M6040, M7040, M8540 2007-2013; M108S 2007-2014

Fitment and Purchase Checks

Years rather than part numbers are what trip people up here, since a 2007 M7040 and a 1997 M9000 sit eleven seasons apart and still take the same casting, while the M105S came and went inside two and left its own narrow column in every book.

Tables that treat the 1G772 and 1C010 families as alternatives have it half right at best. Photograph the plate on the old motor, count the pinion, note the face it bolts to, and the reply comes back with carton price, stock on hand and a dispatch date rather than a question.