Excavator Starter Motors
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Yanmar 105100-77010 is a 12V, 1.2kW, 20-tooth clockwise Hitachi-type starter for Yanmar general-purpose diesel engines. Catalogs cross-reference Hitachi S114-438 and suffix variants. A specific engine-model list was not established, so this page remains Probable/noindex. Confirm the tag, rating, pinion, three-hole mount, engine model and serial before quotation.
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 formatted reference | 105100-77010 |
| Compact Search Alias | Same number without separator | 10510077010 |
| Manufacturer Cross-References | Hitachi family | S114-438 / S114-438B / S114-438C / S114-438D |
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 Published application family: Yanmar general-purpose diesel engines, Fitment limitation: Specific engine model unresolved; confirm tag, rating, pinion, mount, engine and serial. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: S114-438 / S114-438B / S114-438C / S114-438D. Formatting aliases for the same number: 10510077010.
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.
