Excavator Starter Motors
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129407-77010 is a Yanmar cold-district starter for 3TNE88, 4TNE88, 4TNV84T and 4TNV88-series engines. Yanmar application data and electrical catalogs support a 12V 1.4kW 13-tooth configuration. Confirm the cold-district option, flange, pinion and complete engine suffix.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Equipment Part Number | Yanmar starter reference | 129407-77010 |
| Formatted Alias | Same number without separator | 12940777010 |
| Published Equipment References | Komatsu/Cub Cadet format | YM129407-77010 / CY-129407-77010 |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
2 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include Engines: Yanmar 3TNE88 / 4TNE88 / 4TNV84T / 4TNV88, Fitment limitation: Confirm cold-district option, flange, pinion and engine suffix. Confirm the complete part number and machine serial range before ordering.
Formatting aliases for the same number: 12940777010.
Confirm voltage and power rating against the original starter nameplate. Compare mounting-hole pattern, flange position and overall body orientation. Confirm pinion tooth count and rotation where those values are specified. Send clear photos of the original unit and connector layout when requesting a quote.
