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K-90
| HP: | 4 |
| Cylinders: | 1 Cyl |
| Block Material: | Cast Iron |
| Cooling: | Air Cooled |
| Compression: | 8:1 (See Foot Note) |
| Points Gap: | .020 |
| Max RPM: | 4000 |
| Bore: | 2.375 |
| Stroke: | 2.000 |
| Displacement: | |
| Spark Plug: | CHAMPION RJ-8C |
| Plug Gap / Battery: | N/A |
| Plug Gap / Magneto: | N/A |
| Int. Valve Clear. Min: | .005 |
| Int. Valve Clear. Max: | .009 |
| Exh. Valve Clear. Min.: | .011 |
| Exh. Valve Clear. Max: | .015 |
| Oil Type: | SAE30 |
| Oil Capacity: | 3/4 Quart |
| Fuel Type: | Gas |
| Footnotes: | Compression can't be verified, one source gave this value. |
| Related pages: |
