b2920 bowing fuse at starter

[Michael Allison]

I have a b29220 it starts runs , shut it off then the next time it bows the 30 amp fuse by the starter , relace it it starts runs. Then shut it off it keeps doing this . I check for loose connects etc . Help Michael

 

[North Idaho Wolfman]

Could be a shorted glow plug or glow plug indicator, try removing the wire that feeds the glow plugs and see if that bypasses the problem.
Another is a worn spot on the wire insulation that rubs and shorts after the tractor moves or a lever moves causing the short.