Machine models

Iseki AT240 to TH255 specifications

Entries in this reference
Listing-entry count
12

Short answer

Iseki AT240 to TH255: tractors.

Selected configuration figures
Configuration	Documented field and quantity
AT240	Power 23.7 hp Weight Lower 2866 lb Upper 3175 lb
AT260	Power 25.6 hp Weight Lower 2998 lb Upper 3329 lb
RTS23	Power 23.2 hp Weight Lower 2161 lb Upper 2513 lb
RTS25	Power 24.7 hp Weight Lower 2227 lb Upper 2579 lb
RTS235	Power 23.2 hp Weight Lower 2161 lb Upper 2513 lb
RTS255	Power 24.7 hp Weight Lower 2227 lb Upper 2579 lb
TH20	Power 19.7 hp Weight 1,786 lb
TH22	Power 21.7 hp Weight Lower 1896 lb Upper 2348 lb
TH24	Power 23.7 hp Weight Lower 1896 lb Upper 2348 lb
TH25	Power 24.7 hp Weight Lower 1984 lb Upper 2370 lb
TH235	Power 23.2 hp Weight Lower 1973 lb Upper 2877 lb
TH255	Power 24.7 hp Weight Lower 1984 lb Upper 3296 lb

AT240 to TH255 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Iseki	AT240 to TH255	12	AT240, AT260, RTS23, RTS25, RTS235, RTS255, and 6 more

Engine
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Fuel tank	9.25 gal	9.25 gal	7.4 gal	7.4 gal	7.4 gal	7.4 gal	6.6 gal	6.6 gal	6.6 gal	6.6 gal	6.6 gal	6.6 gal
Engine	Iseki 1.5L 3-cyl diesel	Iseki 1.6L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.4L 3-cyl diesel	Iseki 1.4L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel

Transmission and speeds
Specification	AT240	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Transmission	16-speed	Four gears in three ranges with mechanical shuttle	Four gears in three ranges with mechanical shuttle	Four gears in three ranges with mechanical shuttle	Four gears in three ranges with mechanical shuttle	12-speed gear	12-speed gear	12-speed gear	12-speed gear	Four gears in three ranges with mechanical shuttle	Four gears in three ranges with mechanical shuttle

Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Gears	16 forward and reverse	16 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse
Clutch	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc

Specification	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Type	gear	gear	gear	gear	gear	gear	gear	gear	gear	gear

Power
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Engine	23.7 hp	25.6 hp	23.2 hp	24.7 hp	23.2 hp	24.7 hp	19.7 hp	21.7 hp	23.7 hp	24.7 hp	23.2 hp	24.7 hp

Mechanical
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning

Tractor hitch
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Rear Type	I	I	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0

Power take-off (PTO)
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Rear PTO Type	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)
Engine RPM	569@2500	569@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500

Dimensions & Tires
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25
Wheelbase	64.4 in	65.6 in	59.1 in	59.1 in	59.1 in	59.1 in	57.1 in	57.1 in	57.1 in	57.1 in

Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Weight	Lower 2866 lb Upper 3175 lb	Lower 2998 lb Upper 3329 lb	Lower 2161 lb Upper 2513 lb	Lower 2227 lb Upper 2579 lb	Lower 2161 lb Upper 2513 lb	Lower 2227 lb Upper 2579 lb	1,786 lb	Lower 1896 lb Upper 2348 lb	Lower 1896 lb Upper 2348 lb	Lower 1984 lb Upper 2370 lb	Lower 1973 lb Upper 2877 lb	Lower 1984 lb Upper 3296 lb
Front tire	7-14	7-16	7-14	7-16	7-14	7-16	6.00-12	6-14	6-14	7-14	6-14	7-14
Rear tire	9.5-24	11.2-24	9.5-24	11.2-24	9.5-24	11.2-24	8.3-22	8.3-24	9.5-22	9.4-24	9.5-22	9.5-24

Electrical
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Ground	negative	negative	negative	negative	negative	negative	negative	negative	negative	negative	negative	negative
Battery volts	12	12	12	12	12	12	12	12	12	12	12	12

Specification	TH235	TH255
Battery AH	55	55

Engine Detail
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Displacement	91.4 cu in	100.5 cu in	91.4 cu in	91.4 cu in	91.4 cu in	91.4 cu in	83.2 cu in	87.2 cu in	89.3 cu in	89.3 cu in	91.4 cu in	91.4 cu in
Power	23.7 hp	25.6 hp	23.2 hp	24.7 hp	23.2 hp	24.7 hp	19.7 hp	21.7 hp	23.7 hp	24.7 hp	23.2 hp	24.7 hp
Rated RPM	2500	2500	2500	2500	2500	2500	2500	2500	2500	2500	2500	2500
Starter	electric	electric	electric	electric	electric	electric	electric	electric	electric	electric	electric	electric
Starter volts	12	12	12	12	12	12	12	12	12	12	12	12
Engine Detail	Iseki E3CD; diesel; 3-cylinder	Iseki E3CG; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CC; diesel; 3-cylinder	Iseki E3CE; diesel; 3-cylinder	Iseki E3CF; diesel; 3-cylinder	Iseki E3CF; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder

Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH22	TH24	TH25	TH235	TH255
Bore/Stroke	3.425x3.31 in / 87 x 84 mm	3.43x3.62 in / 87 x 92 mm	3.43x3.31 in / 87 x 84 mm	3.43x3.31 in / 87 x 84 mm	3.43x3.31 in / 87 x 84 mm	3.43x3.31 in / 87 x 84 mm	3.35x3.31 in / 85 x 84 mm	3.39x3.30 in / 86 x 84 mm	3.39x3.30 in / 86 x 84 mm	3.43x3.31 in / 87 x 84 mm	3.43x3.31 in / 87 x 84 mm

Iseki AT240 Tires
Specification	AT240
Standard tires (ag)	Front: 7-14 Rear: 9.5-24

Dimensions and weight
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20
Length	118.9 in	118.9 in	102.4 in	110.6 in	110.6 in	110.6 in	105.9 in
Width	50.4 in	54 in	43.5 in	43.5 in	47.8 in	52.4 in	43.7 in

Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Height (ROPS)	77.2 in	78 in	77.4 in	77.4 in	77.4 in	78.2 in	73.4 in	75.6 in	75.6 in	75.6 in	77.2 in	78.4 in
Ground clearance	12.6 in	13.8 in	13.8 in	14.2 in	13.8 in	14.2 in	13.2 in	13.6 in	13.6 in	14.2 in	13 in	13.4 in
Front tread	37.8 in	42.9 in	37.8 in	40.6 in	37.8 in	40.6 in	34.7 in	37.8 in	37.8 in	37.8 in	37.8 in	37.8 in
Rear tread	39.8/46.1 in / 101	41.3 to 53.9 in / 104 to 136 cm	37.4/43.5 in / 94	41.3 in	37.4/43.5 in / 94	41.3 in	33.5/39.6 in / 85	34.7/40.8 in / 88	34.7/40.8 in / 88	34.7/40.8 in / 88	34.7/40.8 in / 88	34.7/40.8 in / 88

Specification	AT240	AT260	TH235	TH255
Height (cab)	77.6 in	78.5 in	76.4 in	78.4 in

Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH22	TH24	TH25
ROPS Weight	2,866 lb	2,998 lb	2,161 lb	2,227 lb	2,161 lb	2,227 lb	1,896 lb	1,896 lb	1,984 lb
Cab Weight	3,175 lb	3,329 lb	2,513 lb	2,579 lb	2,513 lb	2,579 lb	2,348 lb	2,348 lb	2,370 lb

Specification	TH22	TH24	TH25	TH235	TH255
ROPS Length	105.9 in	105.9 in	105.9 in	106.3 in	106.3 in
Cab Length	108.3 in	108.3 in	108.3 in	108.3 in	108.3 in
ROPS Width	46.5 in	46.5 in	46.5 in	46.5 in	46.5 in
Cab Width	49 in	49 in	49 in	49 in	49 in

Specification	TH235	TH255
Crawler Length	113.8 in	113.8 in
Crawler Width	56.3 in	56.3 in

Transmissions
Specification	AT260	RTS23	RTS25	RTS235	RTS255	TH235	TH255
Transmissions	16-speed; 24-speed	12-speed gear; 30-speed partial power shift	12-speed gear; 30-speed partial power shift	12-speed gear; 30-speed partial power shift	12-speed gear; 30-speed partial power shift	12-speed gear; 24-speed partial power shift	12-speed gear; 24-speed partial power shift

Transmission options
Specification	AT260	RTS23	RTS25	RTS235	RTS255	TH235	TH255
Transmission options	16-speed; 24-speed	12-speed gear; 30-speed partial power shift	12-speed gear; 30-speed partial power shift	12-speed gear; 30-speed partial power shift	12-speed gear; 30-speed partial power shift	12-speed gear; 24-speed partial power shift	12-speed gear; 24-speed partial power shift

Iseki AT260 Tires
Specification	AT260
Standard tires (ag)	Front: 7-16 Rear: 11.2-24

Iseki RTS23 Tires
Specification	RTS23
Standard tires (ag)	Front: 7-14 Rear: 9.5-24

Iseki RTS25 Tires
Specification	RTS25
Standard tires (ag)	Front: 7-16 Rear: 11.2-24
Optional tires (ag)	Front: 6.00-12 Rear: 8.3-22

Iseki RTS235 Tires
Specification	RTS235
Standard tires (ag)	Front: 7-14 Rear: 9.5-24

Iseki RTS255 Tires
Specification	RTS255
Standard tires (ag)	Front: 7-16 Rear: 11.2-24
Optional tires (ag)	Front: 6.00-12 Rear: 8.3-22

Iseki TH20 Tires
Specification	TH20
Standard tires (ag)	Front: 6.00-12 Rear: 8.3-22

Iseki TH22 Tires
Specification	TH22
Standard tires (ag)	Front: 6-14 Rear: 8.3-24

Iseki TH24 Tires
Specification	TH24
Standard tires (ag)	Front: 6-14 Rear: 9.5-22

Iseki TH25 Tires
Specification	TH25
Standard tires (ag)	Front: 7-14 Rear: 9.4-24

Iseki TH235 Tires
Specification	TH235
Standard tires (ag)	Front: 6-14 Rear: 9.5-22

Iseki TH235 Weight
Specification	TH235
ROPS	1,973 lb
Cab	2,392 lb
Crawler	2,877 lb

Iseki TH255 Tires
Specification	TH255
Standard tires (ag)	Front: 7-14 Rear: 9.5-24

Iseki TH255 Weight
Specification	TH255
ROPS	1,984 lb
Cab	2,403 lb
Crawler	3,296 lb

Variants — Source comparison annotation
Source guide	Differing-field count reported
AT240 to TH255	57

Ratios
Figure	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Engine horsepower per 1,000 lb of weight	8.3	8.5	10.7	11.1	10.7	11.1	11.0	11.4	12.5	12.4	11.8	12.4
Fuel tank per engine horsepower	0.39 gal	0.36 gal	0.32 gal	0.30 gal	0.32 gal	0.30 gal	0.34 gal	0.30 gal	0.28 gal	0.27 gal	0.28 gal	0.27 gal

Reference directory classification
Equipment group	tractor

History and service record of AT240 to TH255

Compact tractor production. TractorData lists the Iseki AT240 for 2010 to 2012 (AT series, Iseki 1.5 L three-cylinder, 16-speed; the AT23 ran 2004 to 2009) and the TH255 for 2010 to 2016 in the TH5 series, after the TH25 of 2004 to 2010. Iseki AT240, TractorData; Iseki TH255, TractorData.
Iseki. Iseki was founded in Japan in 1926 building rice processing equipment, began tractors in the 1960s, and many of its tractors were sold under the Bolens name in the US. Iseki, Tractor & Construction Plant Wiki; Iseki farm tractors by year, TractorData.
Owner question. A TractorByNet thread asks what years Iseki tractors were manufactured, a common question for older units. Years Iseki's were manufactured?, TractorByNet.

AT240 to TH255: dated market and recall observations — Dated listing search
Date	Listing index	Equipment class	Names queried	Result
2026-09-24	TractorHouse (tractorhouse.com)	tractor	AT240, AT260, RTS23	No matching offers in this snapshot

Dated CPSC search
Date	Database	Names queried	Result
2026-09-24	U.S. Consumer Product Safety Commission	Iseki; AT240, AT260, RTS23	No matching recall in the stated search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Iseki AT240 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki AT260 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki RTS23 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki RTS25 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki RTS235 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki RTS255 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki TH20 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki TH22 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki TH24 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki TH25 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki TH235 — TractorData. Observed 2026-09-24.
Reference site	Reference site: Iseki TH255 — TractorData. Observed 2026-09-24.
Published history	Published history Source: Iseki AT240, TractorData — TractorData. Observed 2026-09-25.
Published history	Published history Source: Iseki TH255, TractorData — TractorData. Observed 2026-09-25.
Published history	Published history Source: Iseki, Tractor & Construction Plant Wiki — Fandom. Observed 2026-09-25.
Published history	Published history Source: Iseki farm tractors by year, TractorData — TractorData. Observed 2026-09-25.
Published history	Published history Source: Years Iseki's were manufactured?, TractorByNet — Tractorbynet. Observed 2026-09-25.
Federal agency data	Federal agency data: Recall database search for Iseki — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Iseki AT240 to TH255: Configuration records

AT240

Specification	Source figure
Engine
Fuel tank	9.25 gal
Transmission and speeds
Transmission	16-speed
Gears	16 forward and reverse
Clutch	dry disc
Tractor hitch
Rear Type	I
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	569@2500
Dimensions & Tires
Front tire	7-14
Rear tire	9.5-24
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	91.4 cu in
Bore/Stroke	3.425x3.31 in / 87 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 7-14 Rear: 9.5-24
Dimensions and weight
Length	118.9 in
Width	50.4 in
Height (ROPS)	77.2 in
Height (cab)	77.6 in
ROPS Weight	2,866 lb
Cab Weight	3,175 lb
Ground clearance	12.6 in
Front tread	37.8 in
Rear tread	39.8/46.1 in / 101
Additional specifications
Engine	Iseki 1.5L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post ROPS. Cab optional with air-conditioning
Wheelbase	64.4 in
Weight	Lower 2866 lb Upper 3175 lb
Power	23.7 hp
Engine Detail	Iseki E3CD; diesel; 3-cylinder

Source

AT260

Specification	Source figure
Engine
Fuel tank	9.25 gal
Transmission and speeds
Gears	16 forward and reverse
Clutch	dry disc
Tractor hitch
Rear Type	I
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	569@2500
Dimensions & Tires
Front tire	7-16
Rear tire	11.2-24
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	100.5 cu in
Bore/Stroke	3.43x3.62 in / 87 x 92 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 7-16 Rear: 11.2-24
Dimensions and weight
Length	118.9 in
Width	54 in
Height (ROPS)	78 in
Height (cab)	78.5 in
ROPS Weight	2,998 lb
Cab Weight	3,329 lb
Ground clearance	13.8 in
Front tread	42.9 in
Rear tread	41.3 to 53.9 in / 104 to 136 cm
Additional specifications
Engine	Iseki 1.6L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post ROPS. Cab optional with air-conditioning
Wheelbase	65.6 in
Weight	Lower 2998 lb Upper 3329 lb
Power	25.6 hp
Engine Detail	Iseki E3CG; diesel; 3-cylinder
Transmissions	16-speed; 24-speed
Transmission options	16-speed; 24-speed

Source

RTS23

Specification	Source figure
Engine
Fuel tank	7.4 gal
Transmission and speeds
Transmission	Four gears in three ranges with mechanical shuttle
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	7-14
Rear tire	9.5-24
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	91.4 cu in
Bore/Stroke	3.43x3.31 in / 87 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 7-14 Rear: 9.5-24
Dimensions and weight
Length	102.4 in
Width	43.5 in
Height (ROPS)	77.4 in
ROPS Weight	2,161 lb
Cab Weight	2,513 lb
Ground clearance	13.8 in
Front tread	37.8 in
Rear tread	37.4/43.5 in / 94
Additional specifications
Engine	Iseki 1.5L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning
Wheelbase	59.1 in
Weight	Lower 2161 lb Upper 2513 lb
Power	23.2 hp
Engine Detail	Iseki E3CD; diesel; 3-cylinder
Transmissions	12-speed gear; 30-speed partial power shift
Transmission options	12-speed gear; 30-speed partial power shift

Source

RTS25

Specification	Source figure
Engine
Fuel tank	7.4 gal
Transmission and speeds
Transmission	Four gears in three ranges with mechanical shuttle
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	7-16
Rear tire	11.2-24
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	91.4 cu in
Bore/Stroke	3.43x3.31 in / 87 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 7-16 Rear: 11.2-24
Optional tires (ag)	Front: 6.00-12 Rear: 8.3-22
Dimensions and weight
Length	110.6 in
Width	43.5 in
Height (ROPS)	77.4 in
ROPS Weight	2,227 lb
Cab Weight	2,579 lb
Ground clearance	14.2 in
Front tread	40.6 in
Rear tread	41.3 in
Additional specifications
Engine	Iseki 1.5L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning
Wheelbase	59.1 in
Weight	Lower 2227 lb Upper 2579 lb
Power	24.7 hp
Engine Detail	Iseki E3CD; diesel; 3-cylinder
Transmissions	12-speed gear; 30-speed partial power shift
Transmission options	12-speed gear; 30-speed partial power shift

Source

RTS235

Specification	Source figure
Engine
Fuel tank	7.4 gal
Transmission and speeds
Transmission	Four gears in three ranges with mechanical shuttle
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	7-14
Rear tire	9.5-24
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	91.4 cu in
Bore/Stroke	3.43x3.31 in / 87 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 7-14 Rear: 9.5-24
Dimensions and weight
Length	110.6 in
Width	47.8 in
Height (ROPS)	77.4 in
ROPS Weight	2,161 lb
Cab Weight	2,513 lb
Ground clearance	13.8 in
Front tread	37.8 in
Rear tread	37.4/43.5 in / 94
Additional specifications
Engine	Iseki 1.5L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning
Wheelbase	59.1 in
Weight	Lower 2161 lb Upper 2513 lb
Power	23.2 hp
Engine Detail	Iseki E3CD; diesel; 3-cylinder
Transmissions	12-speed gear; 30-speed partial power shift
Transmission options	12-speed gear; 30-speed partial power shift

Source

RTS255

Specification	Source figure
Engine
Fuel tank	7.4 gal
Transmission and speeds
Transmission	Four gears in three ranges with mechanical shuttle
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	7-16
Rear tire	11.2-24
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	91.4 cu in
Bore/Stroke	3.43x3.31 in / 87 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 7-16 Rear: 11.2-24
Optional tires (ag)	Front: 6.00-12 Rear: 8.3-22
Dimensions and weight
Length	110.6 in
Width	52.4 in
Height (ROPS)	78.2 in
ROPS Weight	2,227 lb
Cab Weight	2,579 lb
Ground clearance	14.2 in
Front tread	40.6 in
Rear tread	41.3 in
Additional specifications
Engine	Iseki 1.5L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning
Wheelbase	59.1 in
Weight	Lower 2227 lb Upper 2579 lb
Power	24.7 hp
Engine Detail	Iseki E3CD; diesel; 3-cylinder
Transmissions	12-speed gear; 30-speed partial power shift
Transmission options	12-speed gear; 30-speed partial power shift

Source

TH20

Specification	Source figure
Engine
Fuel tank	6.6 gal
Transmission and speeds
Transmission	12-speed gear
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	6.00-12
Rear tire	8.3-22
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	83.2 cu in
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 6.00-12 Rear: 8.3-22
Dimensions and weight
Length	105.9 in
Width	43.7 in
Height (ROPS)	73.4 in
Ground clearance	13.2 in
Front tread	34.7 in
Rear tread	33.5/39.6 in / 85
Additional specifications
Engine	Iseki 1.4L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS
Wheelbase	57.1 in
Weight	1,786 lb
Power	19.7 hp
Engine Detail	Iseki E3CC; diesel; 3-cylinder

Source

TH22

Specification	Source figure
Engine
Fuel tank	6.6 gal
Transmission and speeds
Transmission	12-speed gear
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	6-14
Rear tire	8.3-24
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	87.2 cu in
Bore/Stroke	3.35x3.31 in / 85 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 6-14 Rear: 8.3-24
Dimensions and weight
Height (ROPS)	75.6 in
ROPS Weight	1,896 lb
Cab Weight	2,348 lb
Ground clearance	13.6 in
Front tread	37.8 in
Rear tread	34.7/40.8 in / 88
ROPS Length	105.9 in
Cab Length	108.3 in
ROPS Width	46.5 in
Cab Width	49 in
Additional specifications
Engine	Iseki 1.4L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning
Wheelbase	57.1 in
Weight	Lower 1896 lb Upper 2348 lb
Power	21.7 hp
Engine Detail	Iseki E3CE; diesel; 3-cylinder

Source

TH24

Specification	Source figure
Engine
Fuel tank	6.6 gal
Transmission and speeds
Transmission	12-speed gear
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	6-14
Rear tire	9.5-22
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	89.3 cu in
Bore/Stroke	3.39x3.30 in / 86 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 6-14 Rear: 9.5-22
Dimensions and weight
Height (ROPS)	75.6 in
ROPS Weight	1,896 lb
Cab Weight	2,348 lb
Ground clearance	13.6 in
Front tread	37.8 in
Rear tread	34.7/40.8 in / 88
ROPS Length	105.9 in
Cab Length	108.3 in
ROPS Width	46.5 in
Cab Width	49 in
Additional specifications
Engine	Iseki 1.5L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning
Wheelbase	57.1 in
Weight	Lower 1896 lb Upper 2348 lb
Power	23.7 hp
Engine Detail	Iseki E3CF; diesel; 3-cylinder

Source

TH25

Specification	Source figure
Engine
Fuel tank	6.6 gal
Transmission and speeds
Transmission	12-speed gear
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	7-14
Rear tire	9.4-24
Electrical
Ground	negative
Battery volts	12
Engine Detail
Displacement	89.3 cu in
Bore/Stroke	3.39x3.30 in / 86 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 7-14 Rear: 9.4-24
Dimensions and weight
Height (ROPS)	75.6 in
ROPS Weight	1,984 lb
Cab Weight	2,370 lb
Ground clearance	14.2 in
Front tread	37.8 in
Rear tread	34.7/40.8 in / 88
ROPS Length	105.9 in
Cab Length	108.3 in
ROPS Width	46.5 in
Cab Width	49 in
Additional specifications
Engine	Iseki 1.5L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning
Wheelbase	57.1 in
Weight	Lower 1984 lb Upper 2370 lb
Power	24.7 hp
Engine Detail	Iseki E3CF; diesel; 3-cylinder

Source

TH235

Specification	Source figure
Engine
Fuel tank	6.6 gal
Transmission and speeds
Transmission	Four gears in three ranges with mechanical shuttle
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	6-14
Rear tire	9.5-22
Electrical
Ground	negative
Battery volts	12
Battery AH	55
Engine Detail
Displacement	91.4 cu in
Bore/Stroke	3.43x3.31 in / 87 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 6-14 Rear: 9.5-22
Dimensions and weight
Height (ROPS)	77.2 in
Height (cab)	76.4 in
Ground clearance	13 in
Front tread	37.8 in
Rear tread	34.7/40.8 in / 88
ROPS Length	106.3 in
Cab Length	108.3 in
ROPS Width	46.5 in
Cab Width	49 in
Crawler Length	113.8 in
Crawler Width	56.3 in
Weight
ROPS	1,973 lb
Cab	2,392 lb
Crawler	2,877 lb
Additional specifications
Engine	Iseki 1.5L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning
Weight	Lower 1973 lb Upper 2877 lb
Power	23.2 hp
Engine Detail	Iseki E3CD; diesel; 3-cylinder
Transmissions	12-speed gear; 24-speed partial power shift
Transmission options	12-speed gear; 24-speed partial power shift

Source

TH255

Specification	Source figure
Engine
Fuel tank	6.6 gal
Transmission and speeds
Transmission	Four gears in three ranges with mechanical shuttle
Gears	12 forward and reverse
Clutch	dry disc
Type	gear
Tractor hitch
Rear Type	JIS0
Power take-off (PTO)
Rear PTO Type	540 (1.375)
Engine RPM	523@2500
Dimensions & Tires
Front tire	7-14
Rear tire	9.5-24
Electrical
Ground	negative
Battery volts	12
Battery AH	55
Engine Detail
Displacement	91.4 cu in
Bore/Stroke	3.43x3.31 in / 87 x 84 mm
Rated RPM	2500
Starter	electric
Starter volts	12
Tires
Standard tires (ag)	Front: 7-14 Rear: 9.5-24
Dimensions and weight
Height (ROPS)	78.4 in
Height (cab)	78.4 in
Ground clearance	13.4 in
Front tread	37.8 in
Rear tread	34.7/40.8 in / 88
ROPS Length	106.3 in
Cab Length	108.3 in
ROPS Width	46.5 in
Cab Width	49 in
Crawler Length	113.8 in
Crawler Width	56.3 in
Weight
ROPS	1,984 lb
Cab	2,403 lb
Crawler	3,296 lb
Additional specifications
Engine	Iseki 1.5L 3-cyl diesel
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning
Weight	Lower 1984 lb Upper 3296 lb
Power	24.7 hp
Engine Detail	Iseki E3CD; diesel; 3-cylinder
Transmissions	12-speed gear; 24-speed partial power shift
Transmission options	12-speed gear; 24-speed partial power shift

Source

Compare Iseki AT240, AT260, RTS23, RTS25, RTS235, RTS255, TH20, TH22, TH24, TH25, TH235, TH255

Engine
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Fuel tank	9.25 gal	9.25 gal	7.4 gal	7.4 gal	7.4 gal	7.4 gal	6.6 gal	6.6 gal	6.6 gal	6.6 gal	6.6 gal	6.6 gal
Engine	Iseki 1.5L 3-cyl diesel	Iseki 1.6L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.4L 3-cyl diesel	Iseki 1.4L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel	Iseki 1.5L 3-cyl diesel

Transmission and speeds
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Gears	16 forward and reverse	16 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse	12 forward and reverse
Clutch	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc	dry disc

Mechanical
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Mechanical	Four-wheel drive; Power steering; Wet disc brakes; Two-post ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning	Four-wheel drive; Power steering; Wet disc brakes; Two-post folding ROPS. Cab optional with air-conditioning

Tractor hitch
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Rear Type	I	I	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0	JIS0

Power take-off (PTO)
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Rear PTO Type	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)	540 (1.375)
Engine RPM	569@2500	569@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500	523@2500

Dimensions & Tires
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Weight	Lower 2866 lb Upper 3175 lb	Lower 2998 lb Upper 3329 lb	Lower 2161 lb Upper 2513 lb	Lower 2227 lb Upper 2579 lb	Lower 2161 lb Upper 2513 lb	Lower 2227 lb Upper 2579 lb	1,786 lb	Lower 1896 lb Upper 2348 lb	Lower 1896 lb Upper 2348 lb	Lower 1984 lb Upper 2370 lb	Lower 1973 lb Upper 2877 lb	Lower 1984 lb Upper 3296 lb
Front tire	7-14	7-16	7-14	7-16	7-14	7-16	6.00-12	6-14	6-14	7-14	6-14	7-14
Rear tire	9.5-24	11.2-24	9.5-24	11.2-24	9.5-24	11.2-24	8.3-22	8.3-24	9.5-22	9.4-24	9.5-22	9.5-24

Electrical
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Ground	negative	negative	negative	negative	negative	negative	negative	negative	negative	negative	negative	negative
Battery volts	12	12	12	12	12	12	12	12	12	12	12	12

Engine Detail
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Displacement	91.4 cu in	100.5 cu in	91.4 cu in	91.4 cu in	91.4 cu in	91.4 cu in	83.2 cu in	87.2 cu in	89.3 cu in	89.3 cu in	91.4 cu in	91.4 cu in
Power	23.7 hp	25.6 hp	23.2 hp	24.7 hp	23.2 hp	24.7 hp	19.7 hp	21.7 hp	23.7 hp	24.7 hp	23.2 hp	24.7 hp
Rated RPM	2500	2500	2500	2500	2500	2500	2500	2500	2500	2500	2500	2500
Starter	electric	electric	electric	electric	electric	electric	electric	electric	electric	electric	electric	electric
Starter volts	12	12	12	12	12	12	12	12	12	12	12	12
Engine Detail	Iseki E3CD; diesel; 3-cylinder	Iseki E3CG; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CC; diesel; 3-cylinder	Iseki E3CE; diesel; 3-cylinder	Iseki E3CF; diesel; 3-cylinder	Iseki E3CF; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder	Iseki E3CD; diesel; 3-cylinder

Dimensions and weight
Specification	AT240	AT260	RTS23	RTS25	RTS235	RTS255	TH20	TH22	TH24	TH25	TH235	TH255
Height (ROPS)	77.2 in	78 in	77.4 in	77.4 in	77.4 in	78.2 in	73.4 in	75.6 in	75.6 in	75.6 in	77.2 in	78.4 in
Ground clearance	12.6 in	13.8 in	13.8 in	14.2 in	13.8 in	14.2 in	13.2 in	13.6 in	13.6 in	14.2 in	13 in	13.4 in
Front tread	37.8 in	42.9 in	37.8 in	40.6 in	37.8 in	40.6 in	34.7 in	37.8 in	37.8 in	37.8 in	37.8 in	37.8 in
Rear tread	39.8/46.1 in / 101	41.3 to 53.9 in / 104 to 136 cm	37.4/43.5 in / 94	41.3 in	37.4/43.5 in / 94	41.3 in	33.5/39.6 in / 85	34.7/40.8 in / 88	34.7/40.8 in / 88	34.7/40.8 in / 88	34.7/40.8 in / 88	34.7/40.8 in / 88

More in Iseki: AT460/15 related models specs, TG6625/TG6675, AT280/TG6370/TG6375.

Iseki AT240 to TH255 specifications

History and service record of AT240 to TH255

Sources for this page

Iseki AT240 to TH255: Configuration records