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

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Loss of torque to rear wheels

Tractor will not travel past a slow pace sometimes stops and you have to pump pedal for tractor to start moving again

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It sounds like your drive belt is too loose check it out and possibly look into replacing it, it sounds like its slipping

Posted on May 10, 2010

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Posted on Jan 02, 2017

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Husqvarna 4623 zero turn mower will not move


Maintanance - How to purge Hydraulic drive system Published 01/13/2010 11:56 AM ' Updated 06/02/2015 02:52 PM
How do I purge the hydraulic system?
Hydrostatic transmissions use oil, under pressure, to provide movement for the tractor. The fluid is pressurized with a pump inside the transmission. If any air is in the fluid, the pump will try to pressurize air. This condition is known as cavitation, and is detrimental to the pump since it allows the pump top operate dry. When the pump cavitates it is not pressurizing any fluid, so the transmission is not able to provide the movement needed.
If your mower is new, or has been stored for a long period (longer than 2 months) the transmission needs to be purged before use. Also, if you experience loss of drive, or slower response, then the transmission should be purged first.
The following procedure will remove trapped air inside the transmission(s).
IMPORTANT: SHOULD YOUR TRANSMISSION REQUIRE REMOVAL FOR SERVICE OR REPLACEMENT, IT SHOULD BE PURGED AFTER REINSTALLATION BEFORE OPERATING THE TRACTOR.
Step 1- Place the rear of the mower safely onto jackstands on a level surface with engine off and parking brake set.

Step 2- Disengage transmission by placing freewheel control, located at the back of the frame, in the freewheeling position.

2a- Mowers with seperate pumps and wheel motors the freewheel is activated by turnign the bypass valves, one on each pump, two full turns.
The oil resevoir needs to be filled to the specifications listed in the owners manual before starting the purge procedure.
Step 3- Sitting in the operators seat(riders), start engine. After the engine is running, move throttle control to slow position. With motion control levers in neutral (N) position, slowly disengage clutch/brake pedal.
Step 4-Move motion control levers to full forward position and hold for five (5) seconds. Move levers to full reverse position and hold for five (5) seconds. Repeat this procedure three (3) times.

NOTE: During this procedure there may be some movement of the drive wheels, but they are not under load. The air is being removed from hydraulic drive system.

Step 5-Move motion control levers to neutral (N) position. Shutoff engine and set parking brake. Check and add oil as needed for units with an oil resevoir.

Step 6-Engage transmission by placing freewheel control into driving position, or by closing the bypass valves on the pumps.
Step 7-Sitting in the operators seat, start engine. After the engine is running, move throttle control to full speed. With motion control levers in neutral (N) position, slowly disengage clutch/brake pedal.

Step 8-Slowly move motion control levers forward, after the tractor moves approximately five (5) feet, slowly move motion control levers to reverse position.
After the mower moves approximately five (5) feet return the motion control levers to the neutral (N) position. Repeat this procedure with the motion control levers three (3) times.

Step 9-Your mower is now purged and now ready for normal operation.For further information or assistance, we recommend contacting your lo

Aug 06, 2016 | Husqvarna Garden

2 Answers

Whining sound jd 4510 four wheel drive


accord to my books this tractor has a wet clutch transmission (12 speed) , first thing is to ck your fluid level in transmission , this is bit hard to reach on this one but is possible second obtain a small sample of fluid from transmission, have it tested , It can tell you alot , second you mention that hydraulic pump overloads engine with simple tasks like raise 3-point, this could be a stuck pressure relief valve due to yep you guessed it dirty filter (it bypassed itself) ck hyd fluid for proper level and clarity ohh and one more thing this tractor uses hyd pump for power steering (some others have 2nd pump for this) is it possible that noise is coming from that area , cus I have had to replace power steering valve on that model once for a loud Noise reason
remember if your gonna have a all hydro tractor save yourself a lot of grief and periodly wash shaft seals with water sure saves a lot of grief and leaks !!

Jun 21, 2014 | John Deere Garden

1 Answer

Whining sound


check the oil level

Jun 21, 2014 | John Deere Garden

1 Answer

Changed the master cylender and vacuum booster and blead the system by the book and still cant get breaks without pumping them.


There must be air in the system some where. i am not sure of the year ,make and model of this van and also not sure of the brake system, for example if you have drum brakes in the rear then first adjust them.
The next step is to fill the master cylinder, make sure there are no leak anywhere.Next step start at the master cylinder, at the line to master do not worry about abs system. have someone inside ready to pump brake pedal and hold.Have them pump pedal three times and hold pedal with a little pressure.make sure as you open the bleeder they push on pedal and keep foot on brake until you tell them to pump again. the pedal is to be pumped three times every times.
With pedal pumped start at master lines, open one allow to bleed a little then close and move to next and allow to bleed. if master has more than two lines then pump again and do two, open one and close then open two and close then pump again. After master is bleed a few times and no air comes out then move to right rear wheel, pump three times and hold while you open bleeder, this is to be done about four times to make sure you get a good flow of fluid with no air .
NOTE: always keep master cylinder full, check after each wheel. make sure the person pumping the brakes does not lift until you say and the bleeder is closed. After the right rear wheel you will move to left rear and then right front wheel and last is the left front wheel.
Make sure there are no bad wheel bearings, lift wheel of the ground and grab and check for movement by pulling wheel out and in from top to bottom, the last thing is make sure the caliper slides are free moving.
If the caliper does not slide on the bracket freely then the piston will not stay on pad and pedal will need to be pumped to get a pedal. good day.

Mar 11, 2012 | Cars & Trucks

2 Answers

I have a John Deere LT155. When you let off of either the forward or reverse pedal the tractor comes to an abrupt stop. It will actually lock the wheels.


Hi, most likely the brakes are hanging up. Follow the brake pedal path to the rear of the mower, it is attached to a small arm on the side of the diff that is probably locked forward. This lever and the pins behind it need to be freed up so the lever operates forward and backward freely when the brakes are applied and released. Hope this helps, regards Phil.

Jun 01, 2011 | John Deere 22HP VTwin Hydrostatic 42"...

1 Answer

Unable to bleed the brakes how do you bleed the reakes out


First fill the brake resivior then have someone pump pedal three times and hold pedal down, while you start at the right rear wheel open the bleeder screw and let fluid out and then close make sure who ever pumps pedal keeps preasure on it as you open bleeder because pedal will drop they must push and follow pedal, after you clsoe bleeder you then have them pump pedal again three times you will do this four to five times on each wheel make sure to check fluid level after each wheel is bleed, after the left rear you move to left rear then right front then last is left front, hope this helps.

Sep 11, 2010 | 2003 Volkswagen Passat

1 Answer

Model # 917256563 19.5 hp Craftsman. Ran fine until the front tire fell in a small hole. I heard a poping noise from rear of tractor I lifted the wheel out the hole and now the tractor will only run if I...


If the tractor stopped abrubtly, you may have bent something pertaining to the frame or the clutch pedal assembly if you caught your weight on the clutch when it stopped. Sears parts.com has en exploded view if you enter your model number

Aug 21, 2009 | Craftsman 42 in. Deck 19.5hp Lawn Tractor

1 Answer

John Deere L120 transmission high pitch noise and no forward move


Try jacking the unit up. Start it up and try moving pushing the forward and reverse back and forth and see if it does it then. It sounds like an oil way in the hydrostatic unit has a check valve stuck. Of course make sure that the fluid lever is up. Hope this will help you. donnyb60

Mar 23, 2009 | Garden

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