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How do I change transmission gear oil on cub cadet zero turn. Its a RZT42 model and from reading several statements and reviews it seems that this is the best way to fix why my extremly slow driving. HELP !

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Posted on Jan 02, 2017

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SOURCE: transmission oil ? for cub cadet tractor

Hi, Cissy, Every Cub Cadet is different, and they keep their manuals to themselves. With your exact model and serial number, you can go to their website and view the manual for your model which should have the type of oil you need. Their website is and go to service. If you have trouble, let me know, but I will need the model and serial. Good Luck, this should Fixya!

Posted on Mar 23, 2009

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SOURCE: I have a cub cadet zforce 48 zero turn. It starts

The "operator presence" switch under the seat is bad...and must be replaced.

Posted on Apr 16, 2009

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SOURCE: My cub cadet zero turn mower won't engage the

My cub cadet ZTR M60, under the mower in the rear is 2 wires going to the electric clutch my wire fell and the belt cut one of them. I spliced it and it was good to go. Signed:Acorn tractor

Posted on Jun 05, 2009

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SOURCE: Cub cadet Z Force 48 inch zero turn blades won't engage

I hope this will help you...under the side panels on each side of the mower, there are "reverse lockout safety switches", they are supposed to stop the blades when both handles are pulled back. If one or both of the switches are out, the deck will not engage. Also, under the right side panel (when sitting on seat) there should be 3 relay switches, the one closest to the motor controls the PTO., if this is out, the PTO will not engage.

Posted on Jun 29, 2009

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I have a cub cadet zero turn RZT42. It turns but won't start. What should i check?

need fire, fuel and compression to start. you tube has all these videos and how to check.

Feb 26, 2017 | Cub Cadet Garden

1 Answer

A diagram of the transmission on a cub /zero turn/tank

Michael, The dealer may print the diagram off for you, just try asking them nicely. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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I have a Cub Cadet 1720 with a Hydro Gear 717-3048 transmission, what oil should I use? I need to replace the oil.

The recommended oil depends on the air temperature! This is the chart for oil grades depending on temperature:


Jan 25, 2015 | Cub Cadet Garden

1 Answer

Cub cadet enforcer 54 lunges

Possible transmission fluid issue. Drain, Fill, Drain, Fill.
Call dealer or check online to find which fluid it takes. It's probably 20w-50.
Look at sticker underside of tranny to fetch its model number then look it up online to see parts shematic for transmission.
Parts shematic shows the amount and type of oil.
You will have to work the axels and do the transmission purge located in your manuals first few pages then top it off its last few 8 or 10 ounces.. (unboxing)

Possible carb dirty.

Jun 13, 2013 | Cub Cadet Riding Lawn Garden Zero Turn...

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Cannot engage the gears for RT tiller

I have spent time researching this as mine just did this. It seems you will need to take apart the gearbox and find the issue there, most say some part has bearings inside it that have no grease, and no way for grease to get in there...then it causes something else to break and get stuck.

Trying to decide whether I should try to fix it or take to service tech or ditch it all together.

Jan 30, 2013 | Cub Cadet Rt 65es Tiller 2011 Model

1 Answer

Cub cadet rzt42 left steer problem

each wheel has its own drive motor so look at the linkage adjustment there should also be a stop for the handle example does one lever go forward more than the other one?

May 20, 2012 | Cub Cadet Garden

1 Answer

Cub Cadet RT65. Cannot shift into gear so the tiller will till. will go frrom nuetral to reverse and forward but not reverse till or forward till.

Hi I'm Peter. I realize this is an old post but I will answer it anyway for anyone that has the same question. I just finished rebuilding a Cub Cadet RT 65 Transmission. There are a couple of problems you may be facing. First the shifting shaft that goes down into the transmission is not sealed verywell so my understanding is that water from rain or washing the unit may run down into transmission. and may rust up some parts. You can try spraying penetrating oil and moving it back and forth and you may free it up. I am doubtful though but it's worth a try. The shaft has an arm with a little shaft on it that slides in the grove of a shifting yoke. The shift yoke is mounted on a shaft that has detent groves in it. The yoke has a stiff spring and ball in it that when you shift the transmission it slides up and down to the various groves of which each is either neutral or one of the drive or drive and tiller engagement positions. If your unit is like a few I've seen they have been packed with grease and the little ball and spring cannot get lubrication so they wind up freazing up makeing it near or impossible to move the yoke up and down which fits around the shaft of the primary shift gears that move up and down with the yoke. As they move up and down they will engage the transmission the the various modes of travel and operation. There are other problems also as several of the gears in the transmission have needle bearings so if your unit has only grease in it and not a type of gear oil the needle bearings have no way for the grease to get to them so they destroy themselves which may lead to a catistrphic failure which may include gear teeth being broken off and locking up the transmission. Needless to say the transmission case will have to be split and all new bearings installed plus replacing any other damaged gears, chains, , etc. You can order the bearings from multiple places Cub Cadet of course or you may do as I did and go to Mader bearing or what ever local bearing supply shop in your area and buy new ones. Remember take the old ones with you so they can match up the ones for your particular unit. I can tell you some of the parts/gears are used in most of the same size tillers of nearly all of the major brands. Yep Troybilt, Cub Cadet, Ryobi, Craftsman so there may be minor differences but I'm beginning to suspect as with a lot of appliances today that there is one company that builds them and sells them to the different Name Brands to put their logos on or either they just get their parts from the same place. LOL. There are a couple of videos on you tube that a fellow has taken his apart and filled it with grease. I haven't found it yet in my manuals but from all my years as a mechanic most transmissions have some type of gear oil in them and not grease hence the needle bearing getting destroyed.. I have read refeerences that say that the Cub Cadets at Tractor Supply come with oil in then then people have said they read to put grease in the transmissions when they get low on oil because a seal leakeed. What ever ! I say replace the seal and make the necessary changes if any need to be made so that you can run gear oil in them. The oil can reach the needle bearings and give them a longer life as the grease is unable to rech them. There are several sources I believe even Cub Cadet offers a free download of the Ownes Manual and a parts manual with a breakdown of the transmission including parts numbers.I replaced all the seals and bearings in mine for maybe $60 and a gear that is universal to all of the tillers for around $80. Prices can vary a lot so shop around. The same gear can be had from $ 79.99 - $ 129.00. They even all use the same parts number between the major brands. The drawing in the parts Manual is very confusing so to help everyone out I put a video on you tube Cub Cadet RT 65 Tiller where I have a cleaned transmission with all the gears in the case and I take the out, show you their positions, explain the operation of the transmission and then show how to assemble the gears in their proper place. I also explain and show the dentent shaft and shifting yoke operation. The link is Please like and subscribe so I can put some more videos up to help more people. Comments and questions are always welcome. Hope this helps Peter Cub Cadet RT 65 Tiller

May 08, 2011 | Cub Cadet 1 Rotary Tiller Operator ...

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Problem with left side hydrostatic transmission

This is a well documented problem with cub cadet ZT transmissions. They tend to go bad after 200 hours of use. Sometimes having the dealer change the transmission oil will help (they need to remove the transmissions to do this!). Most times, the transmission is gone & must be replaced ($800-$900).

Sound to me like a design defect. My ZT-50 lasted only 4 years. Needless to say, the replacement was not a cub cadet.

Jul 03, 2009 | Cub Cadet Street Sign- tractor lawn riding...

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