Craftsman 20 Hp 42" Deck Lawn Tractor Logo
Posted on Oct 20, 2009
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Hydrastatic drive trans grinds in revers stalls the engine in forward drive - axle wont release when pin is pulled for free spin. pump oil is full

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mickey813

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  • Master 472 Answers
  • Posted on Oct 20, 2009
mickey813
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Joined: Sep 30, 2009
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SOUNDS LIKE THE IN PUT SHAFT ON THE TRANS IS STRIPED OUT

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Older ex mark lazer Z model LZ27LKA604 doesnt move forward or reverse

No year cart told nor engine sizes, or VIN. the vin tells me engine and trans there.
IN DRIVE, brakes all off, wheels not against curb or rocks
engine RPM rises high and car does not move,
is transmission failure !
check all fuses first
then scan the PCM.
using a scan tool, OBD2 in USA are yah?
or is this a lawn mower posted to CAR s and truck.s
if yes , that is hydrastatic transmission failure
or belt to it fell off if has one.
or oil in it low.
off ground spins prove zero. zero load means nothing.
low oil pressure inside.
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Why won't my Troybilt Bronco go in forward or reverse?

There are to snap pins on the axle inside the wheel you will see where the pins lock the wheel and axle together.This will allow your transmission and tins to turn when you put it in forward gear.
Jun 08, 2022 • Garden
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My mower stopped moving forward and reverse. engine starts easy but hydrastatic pedal does not engage

check pedal connection rod or cable -- check under unit for drive belt problems ---look at axle override lever or rod not engaged --park brake engaged--if all look good possible failure of axle unit
Jun 03, 2017 • Garden
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Craftsman 56" lawn tractor auto trans dose not drive forward or revers. tryed purging trans no go checked engagment rod ok, belt seems good. I can push the mower by hand as if the trans were not connected...

somehow did the little freewheel lever get pulled in the rear of the tractor to disengage transmission?..usually out is disengage and in is engaged. look around the back panel behind the rear axle for a small lever you can pull or push in.
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Were do you put hydro drive oil in. I have a 700ex

Hello, sorry to be the bearer of bad news, but the trans-axle on this is a sealed unit and oil cannot be added. The only thing you can do is an air purge or replace the trans-axle.

Doing a purge is really easy:

  1. put transmission in the freewheel mode so you can push it, ensuring that it is on a flat surface
  2. start engine and run full throttle
  3. release clutch brake
  4. push the drive pedal or lever to the full forward position for a ten count
  5. push the drive pedal or lever to the full reverse position for a ten count
  6. repeat steps 4 & 5 three times
  7. depress & lock the clutch brake
  8. return the transmission to the normal mode
  9. drive tractor
If this fails to correct the problem you may need to replace the transaxle.

If you find this helpful please vote yes. Thank You!!
0helpful
1answer

What oil goes in the transmission?hydrostatic #944.608860

Hello, sorry to be the bearer of bad news, but the trans-axle on this is a sealed unit and oil cannot be added. The only thing you can do is an air purge or replace the trans-axle.

Doing a purge is really easy:

  1. put transmission in the freewheel mode so you can push it, ensuring that it is on a flat surface
  2. start engine and run full throttle
  3. release clutch brake
  4. push the drive pedal or lever to the full forward position for a ten count
  5. push the drive pedal or lever to the full reverse position for a ten count
  6. repeat steps 4 & 5 three times
  7. depress & lock the clutch brake
  8. return the transmission to the normal mode
  9. drive tractor
If this fails to correct the problem you may need to replace the transaxle.

If you find this helpful please vote yes. Thank You!!
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My G100 hydrastatic does not work longgoes about 20 feet then won't go up any kind of grade

Check the trans oil if it is full your trans is bad and is a expensive fix.
Sam
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Transmisson question

How about a trans filter change? That works when things like this happen.
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Transmission repairs

It sounds as if there is no oil pressure in the transmission, it is possible you have no fitted the convertor correctly. if it is not fully engaged into the transmission oil pump it will not drive. of course the other thing could be the transmission has a fault. I am of course assuming you have filled the transmission with the correct type and quantity of oil. if you have pull the trans, and check the convertor has not damaged the oil pump,
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