John Deere 850 PTO question

[SugarG33]

Hi I bought a older JD 850 2 wheel drive and I have a question regarding the PTO. Is it normal while tilling or bush hogging to hear a click noise when you engage the clutch while using the attachment? is it some sort of slip clutch built into the tractor. it is a fast click not a grind or a wind and it slows down as the RPMs decrease. Thanks

 

[Tx Jim]

Welcome to TBN
If your 850 serial # is below 16.000 the clicking noise you hear could be built in over-running clutch(keys 16-19)

https://partscatalog.deere.com/jdrc/sidebyside/equipment/70311/referrer/navigation/pgId/212714785

 

[SugarG33]

OK! Thanks for the info. any idea where the serial # is located on these tractors?

 

[Tx Jim]

According to JD 850 parts catalog serial # tag is below rear pto shaft.

 

[SugarG33]

thanks again.

 

[Tx Jim]

You're welcome

 

[TimberHole]

Yes, the clicking is normal and as Jim stated is the over running clutch