NH488 agian

cdv

Member
wwell put a new bolt and bushing in theb knife head and went out to mow the rest of the hay but this the 488 just cut very little hay and most of was just flatin and rolled over the grass a layed it dowen can the knife bar be gettin dull it was mowing good sunday bebore the bolt broke thanks cdv
 
Are you sure you didnt get it out of time?Although I cant imagine how it would be possible on that machine...If it was cutting fine before the bolt broke,and not after....something alse is going on.
 
Has the crop conditions changed since then, wetter or dryer? Sounds like the wobble gearbox drive belt is slipping. There is nothing on that machine that needs to be timed other than making sure the crimp rollers are meshing.
 
The knife is "timed" so that at the end of the wobble box stroke, a section is centered in a guard. This is done by moving the entire box.
 

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