Specifications
| Model | 31S9 |
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| Horse Power | 17.5 |
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| Displacement | 500cc |
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| Cylinders | 1 |
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| Engine Configuration | Vertical Shaft |
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| OHV Engine | Yes |
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| Length | 18.9 in |
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| Width | 15.5 in |
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| Height | 12.9 in |
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| Weight | 34.9kg |
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| Bore | 3.56 (in) |
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| Stroke | 3.06 (in) |
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| Fuel | Unleaded |
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| Fuel Tank | No |
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| Oil Capacity | 1.36kg |
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| Oil Filter | Yes |
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| Muffler | Not Included |
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| Shaft | 1 inch Diameter / 3.5/32' Long Keyway Shaft |
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| Dimensions | 483 (mm) x 419 (mm) x 330 (mm) (LxWxH) |
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| Warranty | 2 year consumer warranty |
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With more power and features, our EX Series riding mower engines give you the performance you need. The lubrication system extends engine life, and includes a standard oil filter and oil pump to push clean oil to critical components. The unit is 17.5hp and features a cannister-style air cleaner with prefilter.
The unit has a cast iron sleeve promoting durability and longer lasting lifespan.
- Advanced Debris Management System – Helps our engines run cleaner and longer by deflecting and ejecting grass and debris, providing a longer life.
- AVS® Anti-Vibration System - Gives you a smoother ride, saving wear and tear on your engine, your equipment and you.
