Excavator Spare Parts
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Starter magnetic-switch assembly identified by Yanmar number 129136-77310. Yanmar parts listings place it inside starter assemblies for 4TNV88C, 4TNV86CT and related engine variants; published parts catalogs also document 3TNE84 applications. This is a starter component, not a complete starter motor. Confirm the starter nameplate and terminal layout before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Manufacturer Part Number | Yanmar starter magnetic-switch assembly | 129136-77310 |
| Related Starter Assembly | Complete starter assembly; not interchange | 129136-77011 |
| Related Starter Assembly | Earlier complete starter assembly; not interchange | 129136-77010 |
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
3 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 Engine family: Yanmar 4TNV88C / 4TNV86CT, Additional cataloged engine: Yanmar 3TNE84 / 4TNV84T, Fitment limitation: Confirm 129136-77310, starter nameplate and terminal layout. Confirm the complete part number and machine serial range before ordering.
Related assembly numbers (not direct interchanges): 129136-77011, 129136-77010.
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.
Continue comparing verified references from the same system.
