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  #1  
Old 11-27-2018, 08:11 PM
Camarors8992 Camarors8992 is offline
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Default New to me 2072

I recently picked up a 2072 with a 450 blower. I was happy to pay the $500 asking price for a “real” garden tractor. I say “real” because my last cub, a 1604 didn’t really do anything well. Now I have high hopes for the 2072 with it because a super and having similar capabilities to my JD 425.

I’m hoping someone can tell me what it is I have. I was told it was repowred and not the original engine. The tag on the engine says Kohler CH18. The motor seems to fit in there well, aside from the muffler exiting right against the front grill. Is this a good engine? Common Repower?

The forward and reverse movement level is extremely sloppy and unpredictable. If I push it all the way forward it starts to move and then then suddenly goes. I’m sure this isn’t right. I changed the fluid and filter but I haven’t driven it since to see if it changed anything.

The way to motor is coupled to the driveshaft isn’t something I like, I’m sure it does it’s job, but I’m also sure there is a better way. I’m guessing there are vendors that sell a “kit” that would space everything properly?


Any advice or information is appreciated.
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  #2  
Old 11-27-2018, 09:19 PM
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john hall john hall is offline
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Original engine would have been a 20hp Magnum Kohler---unless you had the rare very early model with an Onan. If the hydro is till jerking or not responding well, start reading up on trunnion repairs. If those springs are broke/missing, or if there are loose/improperly adjusted linkages, that's where I would start. Fortunately the same "rules" apply to basically all the Cadet hydros except for the little lawn series, such as a 382. Search the forums, lots of info and pictures.
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Old 11-27-2018, 09:58 PM
Gompers Gompers is offline
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I think the 2072 is a pretty big step up from a 1604. Folks liked those because they were one of the last gear drives CCC/MTD made, but I think for most things folks use garden tractors for, hydro is a better option. The hydro unit in that tractor is more or less bulletproof. Sounds like you need a linkage adjustment/trunion rebuild.

The CH18 is the same as the CH20. you just need to remove the limit screw on the carb to turn it from an 18 into a 20. That might already have been done for you

As much as I love the M20, it's hard to get parts for, and the CH is probably a better long term solution than what was in it originally, as long as the swap was done well. The CH engines have a different driveshaft situation than the M18/20 and KT engines before them. Post some pics so we can see what the guy before you did.


If it's got a 450 blower, you should check to see if the front pulley is the smaller 4ish inch one or the bigger 6ish inch one. Most CH powered tractors had a 6 inch pulley, and that will spin the 450 too fast. The 450 was designed to be used on a 4" pulley PTO tractor (which yours was with the original engine in it). It's honestly not THAT big of a deal as long as the blower is in good shape, but it'll be overdriven by the tractor if it has the bigger PTO in it (and the PO didn't swap the gearboxes on the blower to make it a 451).
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Old 11-28-2018, 07:55 AM
nophun nophun is offline
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That driveshaft connection is iffy.

Good news is that some later Supers came with the CH and that you are here now where the conversion has been done many times; plenty of knowledge.
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Old 11-28-2018, 09:02 AM
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If all you need is the aluminum piece that bolts to the flywheel that the driveshaft bolts to, I have a couple of those laying around, PM me if interested. I'll send it to you for the cost of shipping.

Capture.jpg

You should fix that before those nuts injure your nuts.
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Old 11-28-2018, 09:09 AM
Gompers Gompers is offline
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Quote:
Originally Posted by sorner View Post
If all you need is the aluminum piece that bolts to the flywheel that the driveshaft bolts to, I have a couple of those laying around, PM me if interested. I'll send it to you for the cost of shipping.

Attachment 96955

You should fix that before those nuts injure your nuts.
Does that style line up with the Flex Disc joint style or just with the CV style?
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Old 11-28-2018, 09:18 AM
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Sam Mac Sam Mac is offline
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Quote:
Originally Posted by sorner View Post
If all you need is the aluminum piece that bolts to the flywheel that the driveshaft bolts to, I have a couple of those laying around, PM me if interested. I'll send it to you for the cost of shipping.

Attachment 96955

You should fix that before those nuts injure your nuts.
He has that adapter, the drive shaft for a 2072 is about 2" shorter than the shaft for a 2084. He has 3 options, a spacer, convert to the CV style shaft from a 2084 or 2284 or have Jeff make him a longer shaft.
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Old 11-28-2018, 09:38 AM
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sorner sorner is offline
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Sam, I don't see it in the picture. Looking straight down the engine I would think it would be visible because I thought those were flush with the flywheel screen... which he doesn't have. I could be wrong... it's happened once before.


Edit: I was wrong, I looked back through some of my older pictures when I had a CH18 and the adapter looks recessed. Whatever the case, those nuts are not going to work long term.
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Old 11-28-2018, 01:24 PM
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Sam Mac Sam Mac is offline
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He also should get a screen for the flywheel
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Old 11-28-2018, 10:22 PM
Camarors8992 Camarors8992 is offline
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Quote:
Originally Posted by john hall View Post
Original engine would have been a 20hp Magnum Kohler---unless you had the rare very early model with an Onan. If the hydro is till jerking or not responding well, start reading up on trunnion repairs. If those springs are broke/missing, or if there are loose/improperly adjusted linkages, that's where I would start. Fortunately the same "rules" apply to basically all the Cadet hydros except for the little lawn series, such as a 382. Search the forums, lots of info and pictures.
I had never heard of a trunnion before your post, but I did some reading and I think I now have a decent understanding of my problem. Mine is Worn and sloppy so I’ll have to bring it to work and fire up the welder.

Thnk you for you me input!
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

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