Mercury Mariner 75-100HP 4-Stroke Starter 12V 13-Tooth
200-870
- Dispatched in 2-3 days
- 30 Day Return Policy
- In stock, ready to ship
- Backordered, shipping soon
Starter motor for selected Mercury and Mariner 75-100HP four-strokes
A 12V 1.4kW PMGR replacement starter for selected Yamaha-based Mercury and Mariner four-stroke outboards. It uses counter-clockwise rotation and a 13-tooth pinion and cross-references the Yamaha 67F starter family.
Best used for: electric-start repair on compatible RIBs, sports boats, fishing craft and workboats powered by the listed Mercury/Mariner or Yamaha four-stroke engines.
Technical specification
| System voltage | 12V |
| Rated output | 1.4kW |
| Rotation | Counter-clockwise (CCW) |
| Pinion | 13 teeth |
| Pinion outside diameter | Approximately 39.9mm |
| Starter design | Permanent-magnet gear reduction (PMGR) |
| Engine platform | Selected Yamaha-based four-stroke outboards |
Engine compatibility and applications
- Mercury 75HP and 90HP four-stroke: selected 2000-2005 Yamaha-based applications.
- Mariner 75HP and 90HP four-stroke: selected 2000-2001 Yamaha-based applications.
- Related Yamaha F75, F80, F90 and F100: selected approximately 1999-2004 applications using the 67F starter family.
- Not for Optimax/two-stroke models or unrelated Mercury four-stroke generations.
Compatibility rule: verify the complete engine model and serial range, original OEM number, voltage, rotation, pinion teeth/diameter, mounting and terminal layout. Horsepower alone is not sufficient.
OEM references, checks and installation
- Mercury/Mariner: 50-804312T1, 804312T1, 50-8M0065220, 8M6007420.
- Hitachi: S114-828A, S114-828B, S114-828C, S114-828DN.
- Yamaha: 67F-81800-00, -01, -02 and -03.
- Sierra Marine: 18-6425; ARCO Marine: 3430; API: MOT5017.
Before fitting: isolate the battery, label the cables, compare both units, inspect the flywheel ring gear and check battery condition, cable voltage drop and terminals.
Installation: follow the engine manufacturer's service procedure and torque values. Professional marine installation is recommended.
Package contents: one new replacement starter motor. External cables and unrelated mounting hardware are not included.
Frequently asked questions
Is this for an Optimax two-stroke?
No. It is for selected Yamaha-based four-stroke Mercury/Mariner applications.
Can it fit a Yamaha engine?
Selected Yamaha F75-F100 applications use the related 67F starter family; confirm full model, serial and OEM reference.
What physical details must match?
Check CCW rotation, 13-tooth pinion, pinion diameter, mounting points and terminal positions.
Does it include the vessel's starter relay and cables?
No. The starter motor assembly shown is supplied; external relay, battery and vessel cabling are separate.
Important: OEM names and numbers are compatibility references only. This is a replacement component unless expressly described as genuine OEM.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
