THE ACREAGE EQUIPMENT FIELD GUIDE
One 1.8-liter engine, 35 to 60 horsepower: why displacement does not rate a tractor
KIOTI uses a 1,826-cc three-cylinder diesel across much of its compact range, rated anywhere from 34.9 to 60 gross engine hp. Engine size alone does not tell you the power rating, and the power rating alone does not tell you PTO power. Screen attachments on the exact model’s published figures.
By Acreage Equipment · Reviewed November 9, 2026 · Specification research, not a field test
THE DECISION IN NUMBERS
KIOTI tractors on a 1,826-cc three-cylinder
Values quoted from KIOTI’s CK40 manual (2026), NS and NX brochures (September 2025), NS and NX manuals, and current web pages, reviewed November 9, 2026. CK PTO figures are from the web pages.
Scroll the table sideways on smaller screens.
| Model | Gross engine hp | PTO hp gear / HST | Lift at 24 in. |
|---|---|---|---|
| CK3540 / CK3540H | 34.9 | 31 / 28.9 (web) | 1,631 lb |
| CK4040 / CK4040H | 39.6 | 34.8 / 33.3 (web) | 1,631 lb |
| NS4710 / NS4710H | 44.9 | 36.6 / 36.3 | 2,493 lb (manual) |
| NX4510 / NX4510H | 45 | 37.6 / 33.9 | 3,177 lb |
| NX5010 / NX5010H | 50 | 41.8 / 38.9 | 3,177 lb |
| NS5310H | 50.3 | — / 41.8 (web 36.6) | 2,493 lb (manual) |
| NX5510 / NX5510H | 55 | 46.0 / 43.1 | 3,177 lb |
| NS6010 / NS6010H | 57.7 | 48.3 / 47.9 | 2,493 lb (manual) |
Sources for this decision table (6)
- KIOTI CK2640/CK3540/CK4040 owner’s manual (PDF created March 31, 2026) ↗PDF pp64–75 (printed 4-4 to 4-12) Major Specifications: engine gross power, displacement, lift at lift point and 24 in., weights; no PTO power row
- KIOTI CK3540 and CK4040 current U.S. product pages ↗Full Specs: Power, PTO Power, Lift Capacity (CK3540, CK3540H, CK4040, CK4040H pages)
- KIOTI NS Series brochure (PDF created September 12, 2025) ↗PDF p12 Specifications: Engine Gross, PTO hp, 3-point hitch, Maximum Lifting Capacity* (@ 24 in. aft of hitch), width, weight
- KIOTI NS ROPS owner’s manual NS-ROPS-OM-ENGLISH-210916 ↗PDF pp47–49 (printed 3-3 to 3-5): engine gross power, single Rated PTO Power entry, Category I, 2,493 lb @24 in. / 2,940 lb @lift point; PDF pp52–54: implement limitations
- KIOTI NX Series brochure (PDF created September 18, 2025) ↗p12 Specifications: Engine Gross, displacement 1,825.5 cc, maximum lift capacity
- KIOTI NX4510/NX5010/NX5510/NX6010 owner’s manual NX-OM-ENGLISH-160425 ↗PDF pp56–61: lift 3,177 lb at 24 in. behind and 3,538 lb at lower link end
The same displacement, nine ratings
KIOTI’s documents list 1,826 cc (111.4 cu. in.) for the CK3540 and CK4040, the NS4710, NS5310H and NS6010, and the U.S. NX4510, NX5010, NX5510 and NX6010. Gross engine ratings run 34.9, 39.6, 44.9, 45, 50, 50.3, 55, 57.7 and 60 hp. KIOTI’s engine model codes change with the rating.
PTO power follows the rating and transmission
On the same displacement, published PTO power runs from 28.9 hp (CK3540H, web) to 48.3 (NS6010 and NX6010H). The NX5010 synchro and the NS5310H (brochure) both list 41.8 PTO hp at 50 and 50.3 engine hp; the NX4510 and NS4710 differ by 1.0 hp at 45 and 44.9. Each gear/HST pair has its own figures.
Why it matters for attachments
Two tractors with the same engine block can sit on opposite sides of a limit: the CK3540H (28.9 PTO hp) is under Woodland Mills WC46’s 30-hp ceiling and the NS6010 (48.3) is over every 45-PTO-hp ceiling. A used tractor described by engine size, or a dealer comparing “the same engine”, is not a substitute for the model’s own rating.
What else changes
Within the same displacement KIOTI also changes lift (1,631 lb at 24 inches on the CK3540 against 3,177 on the NX), hitch category (Category II on the current NS6010) and weight (about 2,700 to 4,200 lb). Check those separately.
Take these questions with you.
- What is the exact model and transmission, not just the engine size?
- What gross engine and PTO figures does the current brochure give for that model?
- Do lift, hitch category and weight differ from the tractor I am comparing it with?
- Does the dealer confirm the ratings for the serial number on offer?
Keep these questions with your exact tractor and attachment details.
Use these questions in my seller briefFOLLOW THE NUMBERS
Sources & documentation
Research record reviewed November 9, 2026. Confirm the current manual and the exact revision supplied with your machine.
- KIOTI CK2640/CK3540/CK4040 owner’s manual (PDF created March 31, 2026)PDF pp64–75 (printed 4-4 to 4-12) Major Specifications: engine gross power, displacement, lift at lift point and 24 in., weights; no PTO power row
- KIOTI CK3540 and CK4040 current U.S. product pagesFull Specs: Power, PTO Power, Lift Capacity (CK3540, CK3540H, CK4040, CK4040H pages)
- KIOTI NS Series brochure (PDF created September 12, 2025)PDF p12 Specifications: Engine Gross, PTO hp, 3-point hitch, Maximum Lifting Capacity* (@ 24 in. aft of hitch), width, weight
- KIOTI NS ROPS owner’s manual NS-ROPS-OM-ENGLISH-210916PDF pp47–49 (printed 3-3 to 3-5): engine gross power, single Rated PTO Power entry, Category I, 2,493 lb @24 in. / 2,940 lb @lift point; PDF pp52–54: implement limitations
- KIOTI NX Series brochure (PDF created September 18, 2025)p12 Specifications: Engine Gross, displacement 1,825.5 cc, maximum lift capacity
- KIOTI NX4510/NX5010/NX5510/NX6010 owner’s manual NX-OM-ENGLISH-160425PDF pp56–61: lift 3,177 lb at 24 in. behind and 3,538 lb at lower link end
- Woodland Mills WC46 official product page15–30 PTO hp
- Current index-linked Farmer-Helper FH-BX42 & 62 manualPrinted p2 / PDF p3: 25 minimum and 45 Max PTO HP
- Woodland Mills WC46 operator manual, Rev C, 28-May-2024 — Printed p9 product/shipping weights; p12 Cat 1 and PTO range; operation/setup sections
- Official FM-62 page: exact hammer variant, price and equipment
- Current FM-62/62H and FM-78/78H manual: printed p40 / PDF p41
- WoodMaxx manual index: Models 2025 to current
- Official current FH-BX62S product page: exact SKU, USD price and conflicting power/weight text
- Official FH-BX62S series page: self feed and current-manual link
- Product-linked older manual, Revision 1-3-2018, p38
- Betstco official manual index
