Question about Craftsman 20 hp 42 in. Deck Lawn Tractor - CA Model

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Craftsman 20.5 hp. auto trans.lawn tractor loss of drive power

Experiencing a loss of drive power on the transmission gets worse after running for a while. won't even pull me up any inclines.
Has new belt. Purged transmission, doesn't help. I'm fearing major tranny work. Makes kind of a whinny noise when put under a load, up hill ect. Unit used to fly up hills with loads of pulling/ pushing power.
Model # 917.270860
transaxle model # 319-0650

Posted by on

  • jguitar May 12, 2009

    I have my original craftsman manual with eploded view of the transmission. I don't see any internal pump in the transmission. unless i don't know what I'm lokking for

  • jguitar May 14, 2009

    I hate to be a pain but, I also see #13 as a block cylinder assy. should this also be changed, and what other parts should be looked at for wear and changed? Is there a repair manual avlailable for this model either on line or in book form?

    Thank you so much for you help



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>>You can View a Breakdown/IPL of
this Engine at this Site Addy,
and Select the H. Then Select Hydro-
Gear. Then Select Don't have Part
Numbers. Then Enter the Model
Numbers 319-0650. Then Select your
Model and Download the File for
Online Viewing.
From your Description it Sounds like the Internal Pump is Worn and is Loosing Pressure as the Unit Heats Up and the Components Expand from the Heat.
>>To View a Breakdown of this Unit Go to this Site Addy, and Enter the Model Numbers and Click Search. From this Page you can View Diagrams and Parts Lists for you Equipment Using the "View Sub Components" Section Near the Bottom Left.
Please, Do Not Hesitate, If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck


jbridger (John)

Posted on May 11, 2009

  • John C Bridgers Sr May 14, 2009

    Hello Again jguitar:

    The Pump is # 23 (Block-Cylinder (Motor) Assy) in the Breakdown.

    >>Till Next Time. May All Your Mechanical Problems be SMALL ONES and as Always, May the All Mighty Bless You and Yours. Be Safe and Happy.

    Best Wishes and Good Luck


    jbridger (John)



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