Jump to content

Nominations for Tractor of the Month
Garden Tractors and Parts on eBay



Photo
- - - - -

Speaking of Manuals......


  • Please log in to reply
7 replies to this topic

#1 Brett OFFLINE  

Brett

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Member No: 7141
  • 78 Thanks
  • 287 posts
  • Location: Jacksonville, NC

Posted November 02, 2011 - 04:26 PM

I was wondering if anyone had the owners manual for a 185? My question is with the hydro; does JD recommend driving at full throttle?

#2 ducky ONLINE  

ducky

    Senior Member

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 564
  • 1,632 Thanks
  • 3,870 posts
  • Location: Freedom, WI

Posted November 02, 2011 - 04:41 PM

With a hydro-static drives it is best to keep the RPMs high as it does not cause high pressures in the hydro especially under heavy loads. Much easier on the drive system.
  • Brett said thank you

#3 Brett OFFLINE  

Brett

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Member No: 7141
  • 78 Thanks
  • 287 posts
  • Location: Jacksonville, NC

Posted November 02, 2011 - 04:45 PM

thanks ducky

#4 lyall ONLINE  

lyall

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 2180
  • 1,747 Thanks
  • 1,398 posts
  • Location: State Center, Iowa

Posted November 02, 2011 - 09:23 PM

hydro or gear drive - I think should be ran full throttle
My JD 212 I run a full throttle when I ran it accept when got off the tractor to do something then a low idle. the engine has over 2600 hours on it and ran great, but uses a little oil

#5 JDBrian OFFLINE  

JDBrian

    Super Moderator

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2507
  • 9,574 Thanks
  • 14,136 posts
  • Location: Hubley, Nova Scotia - Canada

Posted November 03, 2011 - 08:17 AM

I've always seen them recommend full throttle. However, if you are only doing light duty work you can back it off a bit. It saves some gas and is less noisy. If you are working the tractor hard like mowing or blowing snow you are better off running it full throttle to get the most HP into the PTO. You may notice that at some point as you lower the rpms the hydro becomes less responsive and speed drops off etc. You likely have it too low at that point. It varies some with the design of the hydro. The older machines like my 314 seem quite happy to run as low as 2300 without complaint. I had a X475 which liked the rpms to stay above 3000.

#6 olcowhand ONLINE  

olcowhand

    Red Tractor Nut & Diesel Addict

  • Staff Admin
  • Staff
  • -GTt Supporter-
  • Sponsor
  • Contributor
  • Member No: 20
  • 35,657 Thanks
  • 29,842 posts
  • Location: South Central Kentucky

Posted November 03, 2011 - 09:18 AM

Yes, the newer the hydro, the more important to run at or near full throttle. As said, the older heavy duty hydro's were very tolerant to low rpm use......not the newer ones like the 185.

#7 Brett OFFLINE  

Brett

    Tractorholic

  • Senior Member
  • -GTt Supporter-
  • Member No: 7141
  • 78 Thanks
  • 287 posts
  • Location: Jacksonville, NC

Posted November 03, 2011 - 08:39 PM

Thanks everybody, good to hear everyones take on it. Sounds like full throttle is winning.

#8 JDBrian OFFLINE  

JDBrian

    Super Moderator

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2507
  • 9,574 Thanks
  • 14,136 posts
  • Location: Hubley, Nova Scotia - Canada

Posted November 04, 2011 - 10:12 AM

I think you can back off a bit when you are just doing light work. It used to bother me to run my 475 wide open. I reduced it a bit and it was a lot quieter and used less gas.




Top