Compare/Yanmar AC-18 vs Yanmar YM186

Yanmar AC-18 vs Yanmar YM186

Verdict: Yanmar AC-18 vs Yanmar YM186

The Yanmar AC-18 and the Yanmar YM186 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 18 hp. Yanmar AC-18 is the lighter machine (645 kg vs 1,433 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Yanmar AC-18 is the newer design (2002 vs 1980). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Yanmar

Fit score

Best match

Clear

Yanmar

Fit score

Best match

Clear

Rated power

18 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

YanmarReference

liquid-cooledReference

Three speeds, plus reverse, with three ranges.Reference

Drive

crawlerReference

—

Differential lock

—

mechanical rearReference

Steering

—

powerReference

Engine

Fuel tank

18.2 LReference

—

Engine

13.4 kWReference

—

Displacement

1.0 LReference

0.9 LReference

Bore/Stroke

74 x 78 mmReference

72 x 72 mmReference

Power

13.4 kWReference

—

Rated RPM

2600Reference

Starter

electricReference

—

Starter volts

12Reference

Engine (gross)

—

13.4 kWReference

Power (gross)

—

13.4 kWReference

Pre-heating

—

thermostartReference

Compression

—

23:1Reference

Firing order

—

1-3-2Reference

Oil capacity

—

7.9 LReference

Coolant capacity

—

4.2 LReference

Intake valve clearance

—

0.203 mmReference

Exhaust valve clearance

—

0.203 mmReference

Transmission

Type

hydrostaticReference

three-speed power shiftReference

Gears

infinite forward and reverse (2-range)Reference

9 forward and 3 reverseReference

Dimensions

Weight

645 kgReference

1433 to 1539 poundsReference

Length

220 cmReference

249 cmReference

Width

119 cmReference

108 cmReference

Height

176 cmReference

—

Ground clearance

34 cmReference

26 cmReference

Front tire

—

5.00-12Reference

Rear tire

—

9.5-16Reference

2WD Ag front

—

5.00-12Reference

4WD Ag front

—

6-12Reference

Ag rear

—

9.5-16Reference

Height (steering wheel)

—

134 cmReference

Height (exhaust)

—

127 cmReference

2WD Shipping weight

—

650 kgReference

4WD Shipping weight

—

698 kgReference

Electrical

Ground

negativeReference

Battery volts

12Reference

Charging system

—

alternatorReference

Charging amps

—

15Reference

Battery AH

—

45Reference

Variants

YM186

—

2WDReference

YM186D

—

4WDReference

PTO & Hydraulics

PTO (claimed)

—

11.9 kWReference

Hydraulic system

—

7.9 LReference

Capacity

—

7.9 LReference

Pressure

—

137.3 barReference

Total flow

—

18.2 lpmReference

Rear Type

—

IReference

Rear lift (at ends)

—

299 kgReference

Rear lift (at 24"/610mm)

—

239 kgReference

Rear PTO

—

liveReference

Clutch

—

electro-magneticReference

Rear PTO Type

—

540/1000 (1.375)Reference

Engine RPM

—

1000@2412Reference

Front PTO

—

independentReference

Front PTO Type

—

pulleyReference

Capacities

Fuel

—

15.9 LReference

Yanmar YM186 attachments

Attachment overview

60" Mower deck

Cutting width

—

152 cmReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.