Production run
Toro 20339 partsSerial 314000001–314999999
The shortest of the nine 20339 listings, all open. Of the parts we hold it names two — blade 59534P and kit 20234 — and no belt, gear, cover or fuel treatment.
At your boundary
What changes at the edges of this run
Drive belts
—→38990at 315000001
No drive belt is among this range’s accessories. The next listing, 315000001–315999999, names 22 Inch Drive Belt for Recycler Mower 38990.
These two listings are consecutive, so the belt starts being offered at this serial. Every one of the seven later runs names it too.
Wheels and drive gears
—→59502at 315000001
Replacement Front Wheel Drive Internal Gear 59502 is absent here and present in the next listing.
It arrives on the same serial as the belt, the cover and the fuel treatment. Four unrelated parts appearing at once looks to us like a listing being filled in rather than four simultaneous design changes — an inference, since Toro gives no reason on the page.
In detail
This production run
A 20339 whose serial number starts 314 is the earliest run Toro publishes a parts listing for, and that listing is shorter than the other eight.
Of the parts this site holds records for, it names two: the 22 Inch Recycler Blade 59534P, and the Engine Maintenance Kit for Briggs & Stratton Engine 20234. No drive belt. No front-wheel drive internal gear. No cover. No standalone fuel treatment — the 0.5 oz. packet is named inside the kit’s own description, not sold as its own line.
All four of those absences end in the very next listing, 315000001–315999999, and none of the four returns to being absent in any listing after it. The two runs are consecutive in Toro’s own list, so this is a real edge rather than a gap we are bracketing.
The honest reading is the uncomfortable one: we cannot tell you the 22 Inch Drive Belt 38990 fits a 314-series machine, and we cannot tell you it does not. Toro lists no belt for these serials. That is a fact about the catalogue and not about the mower, and this site records it as unknown rather than guessing in either direction.
The maintenance kit is still 20234 here, as it is for the 315 and 316 runs. It changes much later, at 400000000.
Confirmed
What we have recorded for this serial range
We record the part categories this site covers. Toro’s own listing for this range carries other accessories besides.
Engine maintenance kits
Engine Maintenance Kit for Briggs & Stratton Engine 20234
Listed by Toro as Engine Maintenance Kit for Briggs & Stratton Engine on its official parts page for model 20339, serial range 314000001–314999999.
Not listed here
Listed for a neighbouring run, but not this one
Absence from a parts listing is not a statement that a part does not fit. It is the manufacturer not saying.
38990 Not verified
Toro does not name 22 Inch Drive Belt for Recycler Mower (38990) among the accessories on its parts page for model 20339, serial range 314000001–314999999.
59502 Not verified
Toro does not name Replacement Front Wheel Drive Internal Gear (59502) among the accessories on its parts page for model 20339, serial range 314000001–314999999.
130-8148 Not verified
Toro does not name Briggs & Stratton EXi Engine Maintenance Kit Replacement (130-8148) among the accessories on its parts page for model 20339, serial range 314000001–314999999.
137-4837P Not verified
Toro does not name Replacement 11 in. Rear High Wheel for Push and Front Wheel Drive Lawn Mowers (137-4837P) among the accessories on its parts page for model 20339, serial range 314000001–314999999.
490-2012 Not verified
Toro does not name Smart Stow Cover (490-2012) among the accessories on its parts page for model 20339, serial range 314000001–314999999.
130-2393 Not verified
Toro does not name Premium Fuel Treatment (0.5 oz.) (130-2393) among the accessories on its parts page for model 20339, serial range 314000001–314999999 — the earliest listing it publishes for this model number.
Every run we opened
Unchanged across the runs we opened
If you are close to the edge
Serial numbers near a boundary
The top of this range is a sharp edge with a consecutive listing above it. If your serial is in the last few thousand, read the plate again — one digit decides whether Toro lists a drive belt for your machine at all.
Other runs
Other production runs of the 20339
Toro publishes 9 parts listings for this model number. We have opened 9.
Method
How we established this
We opened all nine of Toro’s parts listings for model 20339. The count comes from the serial-range selector the listings carry. We compared the accessories they name against the parts this site holds; the pages also carry engine oils, grass bags, a striping kit and fuel products other than 130-2393, which we hold no record for, so this is not an exhaustive diff. One entry on the 315 and 316 listings, an XRef to 137-4837 under part number 119-0313, is not in this site’s dataset and no claim here depends on it.
The common mistake: Treating the shortness of this listing as evidence that the early machine had fewer serviceable parts. It is evidence about the listing and nothing more. What a parts listing omits is not a specification.
Provenance
Sources
Last verified against these sources on August 20, 2026.
- 1
Parts — 22in Recycler Lawn Mower with SmartStow, model 20339, serial range 314000001–314999999
The Toro Company · Primary source · Accessed August 20, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector on the model’s other listings. Within the part categories this site records, its accessory list names 20234, and does not name 38990, 59502, 130-8148, 137-4837P, 490-2012. The page carries further accessories this site holds no record for, among them engine oils, bags and fuel products other than 130-2393.
- 2
Parts — 22in Recycler Lawn Mower with SmartStow, model 20339, serial range 315000001–315999999
The Toro Company · Primary source · Accessed August 20, 2026
Toro’s official parts listing for this model and serial range, reached from the serial-range selector on the model’s other listings. Within the part categories this site records, its accessory list names 20234, 38990, 59502, 490-2012, and does not name 130-8148, 137-4837P. The page carries further accessories this site holds no record for, among them engine oils, bags and fuel products other than 130-2393.
- 3
The Toro Company · Primary source · Accessed August 17, 2026
Lists 20234 (Engine Maintenance Kit for Briggs & Stratton Engine), 38990 (22 Inch Drive Belt for Recycler Mower), 59534P, 59502 and 490-2012. The range selector names eight further serial ranges for this model number.