RK Tractors RK25H

The RK Tractors RK25H is a tractor produced by Rk Tractors. It is equipped with a 77.2 ci 1.3 L engine. The listed engine power is Diesel (listed): 24.7 hp / 18.4 kW. Transmission: infinite forward and reverse (2-range). Operating weight: 1080 lbs 489 kg.

Engine Power

Diesel (listed): 24.7 hp / 18.4 kW

Fuel & Capacities

6.6 gal 25.0 L

Transmission

infinite forward and reverse (2-range)

Operating Weight

1080 lbs 489 kg

Overview

	2021 - Sub-Compact Utility tractorTYM built
2021 -
Sub-Compact Utility tractor
TYM built

2021 -
Sub-Compact Utility tractor
TYM built

Production
Distributor	RK Tractors (a part of Rural King)
Manufacturer	TYM
Sub-Compact Utility tractor

RK Tractors RK25H Engine
Yanmar 1.3L 3-cyl diesel
Engine details ...

RK Tractors RK25H Transmission
hydrostatic
Transmission details ...

RK Tractors RK25H Power
Engine	24.7 hp 18.4 kW
PTO (claimed)	18.3 hp 13.6 kW

Mechanical
Four-wheel drive
Differential lock	mechanical rear
Power steering
Wet disc brakes
Two-post folding ROPS. Cab optional with heater.

Capacity
Fuel	6.6 gal 25.0 L
Hydraulic system	5.8 gal 22.0 L

Hydraulics
Type	open center
Capacity	5.8 gal 22.0 L
Pump flow	4.18 gpm 15.8 lpm
Total flow	6.95 gpm 26.3 lpm
Steering flow	2.77 gpm 10.5 lpm

Tractor hitch
Rear Type	I
Control	position control
Rear lift	1534 lbs 695 kg
Rear lift (at 24"/610mm)	1102 lbs 499 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540 (1.375)
Mid PTO	independent
Mid PTO Type	2000

Dimensions & Tires
Wheelbase	61 inches 154 cm
Weight	1881 lbs 853 kg
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	40
Battery volts	12

Engine

	2021 - Sub-Compact Utility tractorTYM built
2021 -
Sub-Compact Utility tractor
TYM built

2021 -
Sub-Compact Utility tractor
TYM built

Engine Detail — 77.2 ci / 1.3 L Diesel

Manufacturer	Yanmar 3TNV80F
Fuel Type	Diesel
Configuration	3-cylinder, liquid-cooled
Displacement	77.2 ci 1.3 L
Bore/Stroke	3.15x3.31 inches 80 x 84 mm
Power	24.7 hp 18.4 kW
Fuel system	direct injection
Air cleaner	dry
Rated RPM	3000
Starter	electric
Starter volts	12
Oil capacity	2.9 qts 2.7 L
Coolant capacity	3.8 qts 3.6 L

Transmission

	2021 - Sub-Compact Utility tractorTYM built
2021 -
Sub-Compact Utility tractor
TYM built

2021 -
Sub-Compact Utility tractor
TYM built

Transmission — infinite forward and reverse (2-range) hydrostatic

Type	hydrostatic
Gears	infinite forward and reverse (2-range)

Dimensions

	2021 - Sub-Compact Utility tractorTYM built
2021 -
Sub-Compact Utility tractor
TYM built

2021 -
Sub-Compact Utility tractor
TYM built

Dimensions
Wheelbase	61 inches 154 cm
Length	107.8 inches 273 cm
Width	52.8 inches 134 cm
Height (ROPS)	89.8 inches 228 cm
Weight	1881 lbs 853 kg
Ground clearance	7.71 inches 19 cm

Attachments

	2021 - Sub-Compact Utility tractorTYM built
2021 -
Sub-Compact Utility tractor
TYM built

2021 -
Sub-Compact Utility tractor
TYM built

Attachment overview
60" mid-mount mower deck
Front-end loader
Backhoe

60" Mower deck
Type	mid-mount RK Tractors M60
	3-blade
Cutting width	60 inches 152 cm
Weight	272 lbs 123 kg
Cut height	1 to 4 inch 2 to 10 cm

RK Tractors BH6.7 Backhoe
Backhoe type	RK Tractors BH6.7 Backhoe
Weight	1080 lbs 489 kg
Transport height	81 inches 205 cm
Bucket width	6 inches 15 cm
	12 inches 30 cm
	16 inches 40 cm
	18 inches 45 cm
	24 inches 60 cm
2-Foot flat digging depth	80.4 inches 204 cm
Reach from pivot	118 inches 299 cm
Loading height	63 inches 160 cm
Bucket Rotation	180°
Swing Arc	180°
Bucket force	2844 lbs 1290 kg
Dipperstick force	1874 lbs 850 kg

Photos

RK Tractors RK25H tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Rk Tractors RK25H based on its 24.7 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	1 to 2 Bottom (12")1 - 2 铧 (30 cm)	Light Duty	Ideal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing	4 ft (48 in)1.2 m	Light Duty	Pasture clipping and light brush under 1" diameter.
Rotary TillerSeedbed Prep	42 to 48 in105 - 120 cm	Light Duty	Covers compact tractor tire width.
Disc HarrowSecondary Tillage	5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片)	Light Duty	Small acreage soil break-up and secondary aeration.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Rk Tractors RK25H.

Estimated Continuous Field Runtime: 5.1 hrs

Approximately 5.1 hours of continuous field operation at ~75% rated power on a full tank (6.6 gal / 25 L).

Estimated 75% Load Fuel Burn~1.3 gal/hr (4.9 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours