Garden

Starts fine but will neither drive forward or back.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

Failure of any mechanical component, a broken hose, or clogged filter will cause tractor hydrostatic transmission problems. But the most common issue will be the oil itself. In the transmission section of your operator`s manual, you`ll find a section that covers oil viscosity.
One of the disadvantages of hydrostatic drives is that the majority of the oil stays in the loop and doesn`t return to the reservoir for cooling. One way to return some of the oil back to the tank is by using a hot oil shuttle valve.
Although cavitation is much more common with hydraulic systems, it can also seriously damage hydrostatic transmissions. Caused when gases in the fluid vaporize, it`s characterized by noisy, erratic transmission operation.
The usual transmission has two hydraulic devices; one working as a variable displacement pump and the other working as a motor connected by hydraulic lines. The pump converts mechanical energy into pressure and the motor reconverts the pressure energy to mechanical energy.
They are filled with the specified pump fluid to match each pump design and then sealed by each manufacturer at their factories. Replacing hydrostatic fluid is normally not necessary, unless the drive system is in need of some other internal service or repair.
Air in the hydraulic fluid makes an alarming banging or knocking noise when it compresses and decompresses, as it circulates through the system. Other symptoms include foaming of the fluid and erratic actuator movement.
The fluid recommended for Hydro-Gear transmissions and pumps is a 20W-50 motor oil or 15W-50 synthetic motor oil.
The HT-1000 transmission fluid only needs to be changed once every 1000 hours, as opposed to as early as 500 hours with other brands. Our Hydrostatic Transmission Fluid HT-1000™ is a synthetic transmission oil engineered to provide maximum durability and long life for heavy-duty hydrostatic drive systems.
Recommended for all hydrostatic drive systems where the manufacturer recommends SAE 20W-50 fluid.
The reasons why mower is not moving forward or reverse is that the battery is dead, or due to clogged fuel line. Additionally, malfunctioning transmission, or a broken drive belt, also a faulty spark plug, even when friction wheel isn`t in contact with the friction plate, or damaged Tires.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Hydrostat trans on leftside stop pulling – Mustang Rzt 50" Zero Turn Riding Lawn Mower
ANSWER : Each side has it’s own hydro motor check the linkage first

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Lawn tractor model 917.27062. Hydrostatic drive stop working. I got off to move some stuff got back on and started it up and nothing. Any ideas to trouble shoot and correct the problem
ANSWER : Check drive belt not broken and still on pulleys also check axle disconnect /transport axle override not active

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Pump works for about 20 seconds then stops for 40 seconds then starts again.
ANSWER : This sounds as if motor is overheating and the thermal switch is stopping it (why it restarts by itself) if a pump is overheating then a few reasons need be looked at , is pump encountering higher viscosity’s than designed for and is having trouble moving liquid fast enough , is distance pump has to lift liquid over what it’s designed to do most of these pumps use liquid it’s moving to provide cooling to pump , is liquid it’s moving warm/Hot allready if so use different type of pump (non submerged) and last but not least is pump worn out and is failing moving parts wearing together make heat !!! ?

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Is the rubber on the drive wheel on the snapper mower fixed to the metal hub? The rubber wheel part of the drive is not securely attached to the metal frame and slips when the mower goes up hill. Should I replace the drive wheel?
ANSWER : Yes, it may have gotten excessive oil on it and swelled the rubber. Replace the drive wheel.

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Motor stops, washer was working , full level in oil and good oil. Don’t starts again, apparently barred engine, does not “turn” around.
ANSWER : Whats it like if you remove the pump and gearbox if driven by a gearbox?

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HUSQVARNA WILL STALL AFTER CUTTING MORE THAN 30 MINS
ANSWER : Something to try. I have a Craftsman ride on. When the motor is about to stall, loosen the gas cap. My gas cap vent was plugged and the mower would run fine for a while then stall like it was out of gas. I noticed that my plastic gas tank was collapsed a bit and found my problem.
I hope this solves yours or at least eliminates a potential cause.
Gary

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Hydrostatic drive is weak
ANSWER : Try pulling back on the left foot pedal. This manually adjusts the drive belt tension and is a sign that the engine pulley has worn to the point the belt looses traction. A local repairman told me this last week and mine works fine now although in the very near future I’ll need to replace the pully. Good luck

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What oil goes in the transmission?hydrostatic #944.608860
ANSWER : 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:

put transmission in the freewheel mode so you can push it, ensuring that it is on a flat surface
start engine and run full throttle
release clutch brake
push the drive pedal or lever to the full forward position for a ten count
push the drive pedal or lever to the full reverse position for a ten count
repeat steps 4 & 5 three times
depress & lock the clutch brake
return the transmission to the normal mode
drive tractorIf 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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