Parsun F20 F25 Driven Timing Pulley F25-05050017 Yamaha 65W-11537-01
PAF25-05050017
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Parsun F20 / F25 Driven Timing Pulley
Cross-reference F25-05050017 / Yamaha 65W-11537-01
Replacement driven timing pulley used in the camshaft/timing-belt system of specified Parsun F20 and F25 four-stroke outboards. It is selected by the exact engine parts diagram, not horsepower alone.
Key Features
- Driven timing-belt pulley for specified Parsun F20/F25 applications
- Cross-reference to Yamaha 65W-11537-01 family
- Additional OMC reference family 833104 / 8331043
- Precision replacement for the original pulley geometry
- Pulley only; no belt or installation hardware unless shown
Technical Specs
| Part type | Driven timing-belt / camshaft pulley |
| Parsun reference | F25-05050017 |
| Yamaha reference | 65W-11537-01 |
| OMC reference family | 833104 / 8331043 |
| 4Boats SKU | PAF25-05050017 |
| Quantity | 1 pulley |
Compatibility / Fitment Guide
Application basis:
| Parsun F20 / F25 | Compatible four-stroke variants whose oil-pump/camshaft parts diagram specifies F25-05050017; catalogue coverage includes the related 1998–2008 design family. |
| Yamaha | Only applications whose catalogue specifies 65W-11537-01. |
| OMC-built/cross-listed | Only when 833104 or 8331043 is the documented original reference. |
| Required physical checks | Pulley bore, keyway, tooth profile, timing marks and belt alignment must match. |
| Excluded | Parsun models using F20-05030012 or other timing-pulley references. |
Use the full model suffix and serial number because F20/F25 designs changed across production generations.
Part Number Cross Reference
| Parsun part number | F25-05050017 / 25-05050017 |
| Yamaha part number | 65W-11537-01 |
| OMC references | 833104 / 8331043 |
| 4Boats SKU | PAF25-05050017 |
Cross-reference numbers identify compatible applications; they do not imply that this part is supplied in the original engine manufacturer's packaging.
Frequently Asked Questions
Is this compatible with all F25 engines?
No. Only engines whose parts list specifies F25-05050017.
Is it interchangeable with F20-05030012?
No. They are separate pulley references for different timing layouts.
What is supplied?
One driven pulley.
Must timing be reset?
Yes. Follow the engine workshop manual and verify all timing marks before rotation or starting.
Verify the serial-specific parts diagram and use the correct timing and torque procedure.
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