Internet #204627329

Model #ST 100

Store SKU #1000022409

Store SO SKU #639830

22 in. 159cc Gas Walk Behind String Trimmer Mower

  • 159 cc Cub Cadet OHV Engine
  • 22 in. cutting swath
  • 14 in. Wheels for easy maneuvering
  • See More Details

Frequently Bought Together


Product Overview

The Cub Cadet high performance 159cc OHV engine is equipped with an AutoChoke system that eliminates the need to prime the engine prior to starting. Debris shield on deck protects the operator. Cub Cadet's unique deck design allows you to trim right up against fence lines, posts and other obstacles.
  • California residents
  • Powerful and efficient 159cc OHV engine provides plenty of power for tall grass and weeds
  • AutoChoke feature means no need to prime the engine before starting
  • 22 in. cutting width and five adjustable height settings (1.75 in. - 4 in.) provide versatility for all your cutting needs
  • Unique deck design allows for trimming against fence lines and posts
  • Rolls smoothly on large 14 in. rear wheels with ball bearings
  • Heavy duty 0.155 in. trimming line included
  • Handle folds for easier storage
  • Easy setup: just fold up handle, add gas and oil and go
  • Motor oil included
  • Choose Cub Cadet with confidence, backed with a full 3-year limited warranty, including the engine

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.



Assembled Depth (in.)
22 in
Assembled Height (in.)
41 in
Assembled Width (in.)
55 in
Cutting Width
22 inches
Line Diameter (in.)
Wheel Size (in.)


Assembly Required
Cutting Height Options
Cutting Options
Deck Material
15 Gauge Steel
Deck Type
Engine Displacement (cc)
Engine Make
Cub Cadet
Engine Torque (ft.-lb.)
Engine Type
4 Cycle
Rust resistant deck
Fuel Tank Capacity (gallons)
Engine oil
Lawn Mower Type
Trimmer Mower
Maximum Cutting Height (in.)
Minimum Cutting Height (in.)
Number of Handlebar Positions
Product Weight (lb.)
Rear Wheel Height
High Wheel
Recommended Oil Type
SAE 10W-30
Recommended Terrain
Size of Yard
1/4 - 1/2 Acre
Start Type
Pull Cord

Warranty / Certifications

Manufacturer Warranty
3-year limited warranty, including the engine

Questions & Answers


where do you get the replacement line for this trimmer

Asked by Silverdollar84 May 15, 2014

When I bought my trimmer, I bought Rino-Tuff Heavy Duty replacement line as I knew I would eventually need it. I got it at Home Depot also and today I had to use it for the first time. It is wonderful. It has line cutter on it also and I just cut it to 19" which is what the original line was. Wish I had known this was so much better than what came with the machine. Easy to replace on the machine as well.

Why the rule of only mowing up to 15 degrees of incline?

Asked by captcm1 March 29, 2014

I'm sure that along with the string digging into the dirt, it's oil starvation. After you change the oil the first time I'd recommend using a small engine synthetic oil which will protect the engine better during times that the 15 degree limit is just not possible. I have a Honda mower that did the same thing on some steep grades of my lawn and after I switched to Amsoil Small Engine SAE 10W-30 synthetic oil I never saw the problem again.

Who is the manufacturer of the engine? Honda? Briggs & Stratton? Another?

Asked by prisoner6 December 9, 2013

Nice try Cub Cadet, they do not mfg small engines. It is an MTD Powermore, mfg in "Asia". Search for "MTD Overhead Valve engine", you will get the picture. Not saying it's a bad mower, CC is just being a little deceptive.

do you need to mix the oil and gas or are they separate?

Asked by MusicMan April 16, 2015

is this a 2 stroke or 4 stroke motor. need to know for Fuel purposes?

My backyard is a hill mostly covered with ivy and trees. Will this trimmer be good for limiting t...

Asked by sweetpea July 27, 2018

It will for sure wipe out the Ivy. As for the saplings, you have to watch for the thickness of them.!/4 inch thick will cut. I would call Technical support at Cub Cadet. They will give you good info.

Are these tough enough to handle blackberry bushes and other vines that grow in the northwest?

Asked by Seth February 21, 2018

The engineering on these are very poor. There are sharp edges against the string which cuts the string, therefore one having to keep putting more string than should be necessary. So to answer your question, the answer is "NO". My husband is a retired tool & die make/special machinist engineer and he could see that the machine had to be modified, which he did. Now the machine works like a charm. If you know of a person or can find one that would modify a machine for you, this trimmer mower is worth the money. I purchased this trimmer mower for my husband's birthday and since he's got it working properly now, he loves it! Best wishes. Lenda H.

Is this Self driven?

Asked by Barry March 16, 2016

No. You need to push it.

Is this self-propelled or push?

Asked by David February 14, 2019


Can I direct the weeds from landing into my flower gardens with the guard?

Asked by Deb August 23, 2018

I do not believe the guard provides much capability for directing the dispersion of cuttings. It is designed to prevent the operator from unintentional contact with the trimmer strings.

Let me edit my question a bit. My trail net work is far from the cabin up here in NE, MN. The tra...

Asked by Immer April 13, 2019

This can do both, but you can't adjust the height like you can a mower. Get used to replacing the twine, but this should do very well. I used it to clear and keep mowed about 2 acres with fallen branches, 10ft high grasses, vines, yaupon, small pine saplings. There was also a lot of mud and many ruts to deal with. This thing worked out great.

22 in. 159cc Gas Walk Behind String Trimmer Mower - page 2

Customer Reviews

  • 1365 Customer Reviews
  • 4.5 out of 5 stars overall
88% of customers recommended.
Overall Ratings
Sort By:
Great product
Customer review from logo
I purchased two months ago. N this is the best yard product I every purchased. Cut down small branches n chew grass n small trees away like nothing. Love n would recommend to anyone.
Was this helpful?
High Hopes
Features :
Quality :
Value :
I had high hopes this mower would be just what I needed, then it broke. Lower handle fractured at the bolt. This was only second use of the mower. Until then it was headed for a solid 4 stars. Anyone else had this problem?
Was this helpful?
Response from CubCadetAugust 3, 2020
Hello MW98. We're sorry to hear you haven't been satisfied with your Cub Cadet equipment. We do take our customers' opinions very seriously and the feedback we receive helps us build better products. If you’d like to discuss your experience with us, you can give us a call at 1 (877) 428-2349 and mention your case number 05821794 so we can help. Thank you very much.
Awesome machine, worth every penny!
Awesome machine, worth every penny!
Was this helpful?
I wish i found this baby earlier
We have a 7 ac lot with some slops fill with black mustard. Every year, we spent thousands to have people to do the weed abatement. This year, with current situation, we couldn’t find one can come, so we decided to take care this by ourselves. We are glad to find this one. It works pefectly.
Was this helpful?
Pull the trigger on this one!
Features :
Quality :
Value :
Needed a new lawn mower and was looking when I stumbled on the wheeled trimmer mowers. I wondered if you could use one of these like a lawn mower. Googled a lot of things and never really got an answer. Well I'm here to tell you you can mow with one of these. (see pics) I have a lot of trees and tree roots to mow around and then there is the edging around the house, fence, and flower/rock beds. One and done and my yard looked great, around the trees never looked better. Now the annoying part. Opened the box and the black nut/handle things were missing. In the instructions is reads not to return to the store... I used some bolts I had so I could use this and it worked fine. Contacted Cub Cadet about sending the replacement parts and have not heard back. Been over a week, with the corona thing that may be why. But hello Home Depot, if I do not get satisfaction from them I will be come see you. Put gas and oil in, the oil comes in a pre measured pouch, pour it slowly as it will back up and run down the outside of the tube. Started on the first pull. There is a wee bit of a learning curve, like run the thing along fences and houses from the left, and watch where is throws the clippings and you can avoid, mostly, putting them in your beds. My shoes and pants were free of the clippings that I am usually covered in after weed wacking. The vibration was a minimum, I think a lot less than a gas mower. Have fun and remember, long pants and eye protection.
Was this helpful?
Been using it for a couple of weeks now and so far so good. Have an acre of nothing but berry bus...
Been using it for a couple of weeks now and so far so good. Have an acre of nothing but berry bushes and out of control weeds that I just started working on and it seems to chew through it all. The yard is full of hills and holes, gopher mounds and mole tunnels so it's really being put to the test. If it'll work for what I'm using it for then I'm sure it'll work for pretty much anybody.
Was this helpful?
Power from the start
We bought this today and waited for it to cool off this afternoon. Within 15 minutes of assembly (putting in the oil, gas
Was this helpful?
We have 5 acres in Colorado with very heavy brush growth in an area we did some excavation in. Th...
We have 5 acres in Colorado with very heavy brush growth in an area we did some excavation in. The trimmer went through any amount of brush without hesitation. It starts first pull Everytime. I would highly recommend.
Was this helpful?
This is a great step up from a stand up weed eater, if you have tall weeds this will do ...
This is a great step up from a stand up weed eater, if you have tall weeds this will do the trick. It fired right up first pull, good clearance and does very well on hills and rough terrain. Light weight enough that my 10 year old was able to use it for an hour and a half, when he finally stopped playing destroyer of weeds he said how fun it was and he wished we had more weeds.
Was this helpful?
I just bought my 3rd Cub Cadet. I love the machine, but, sadly, I need to stop buying them, they...
Features :
Quality :
Value :
I just bought my 3rd Cub Cadet. I love the machine, but, sadly, I need to stop buying them, they just fall apart. On the first 2 the spindle fell off, after, around 20 hours. I have brush here to cut, it's a ranch. I use it to cut fire break around buildings and mow the roadside. So I bought my 3rd Cub Cadet 2 days ago. I took it out of the box yesterday. I mowed about 4 hours total with it, and this morning the wheels fell off. I can't find 2 of the parts, lord knows where they came off. So, I'm done. It's an hour drive for me to get to town, and now I have to drive back and return this machine, another day wasted. I'll choose a different mower this time.
Was this helpful?
Response from CubCadetAugust 19, 2019
Hello. We're sorry to hear you haven't been satisfied with your Cub Cadet equipment. We do take our customers' opinions very seriously and the feedback we receive helps us build better products. If you would like to discuss this further, give our customer support team a call at 1(877) 428-2349 to talk about the issues you’ve been having. Thank you.
Review this Product
Share your thoughts with other customers