Class3

Modified

                                                                                                                      

1. Engines may be 1 or 2 cylinders with original carburetion, not exceeding 20 HP from the OEM.

2. Cylinder must not exceed 0.030 over original bore diameter.

3. Stroke must meet OEM spec for that engine

4. No valve, Camshaft, Head changes OR modifications allowed

5. Only internal modification for increased strength allowed

6. Exhaust may be modified

7. Engines may be changed

8. Engine rpm may be modified

9. All tractors must be naturally aspirated

10. Tractor must have stock rear end of a lawn and garden type.

11. Gear ratio changes allowed.

12. Clutch changes or modification allowed.

13. Rear-ends may be locked

14. Rear-end modifications allowed for increase strength ONLY!

15. Tractor must use stock frame, only modification for engine change allowed

16. Maximum tire size: 26x12x12

17. Must have on board starting system