Complete
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8 10 13 16 6 5 19 1 17 2 9 14 3 11 15 4 12 18 7
  1. 5a Ground-clearing vehicle – sleeping male animal? (9)
  2. 8a Hew (4)
  3. 9a Local government building (4,4)
  4. 10a Separate (6)
  5. 11a Gentle neigh (6)
  6. 13a Sash opening? (6)
  7. 15a Scuffle (6)
  8. 16a Male platonic love (8)
  9. 18a Curve over (4)
  10. 19a Mallow relative (9)
  11. 1d Where scrap left (8)
  12. 2d Malfunction (6)
  13. 3d Dog (3-3)
  14. 4d Interwoven structure (4)
  15. 6d Coffee pot (9)
  16. 7d Historical sparking gun (9)
  17. 12d Case (8)
  18. 14d Draw out by effort (6)
  19. 15d Grow or cut incisors etc (6)
  20. 17d Subject to uncertainty (4)