Yanmar AF645
The Yanmar AF645 is a tractor produced by Yanmar. It is equipped with a 168.1 ci 2.8 L engine. The listed engine power is Diesel (listed): 45 hp / 33.6 kW. Transmission: 18 forward and reverse. Operating weight: 4883 lbs 2214 kg.
Engine Power
Diesel (listed): 45 hp / 33.6 kW
Fuel & Capacities
17.2 gal
65.1 L
Transmission
18 forward and reverse
Operating Weight
4883 lbs
2214 kg
Overview
 | 2001 - 2005
AF600 Series |
|---|
Production | |
|---|---|
Manufacturer | Yanmar |
Yanmar AF645 Engine | |
|---|---|
Yanmar 2.8L 4-cyl diesel | |
Fuel tank | 17.2 gal
65.1 L |
Engine details ...  | |
Yanmar AF645 Transmission | |
|---|---|
18-speed power shuttle | |
Transmission details ...  |
Yanmar AF645 Power | |
|---|---|
Engine | 45 hp
33.6 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Power steering | |
Mechanical wet disc brakes | |
Cab standard with air-conditioning. |
Tractor hitch | |
|---|---|
Rear Type | I |
Control | position control |
Rear lift | 3754 lbs
1702 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 564/756/1073 (1.375) |
Dimensions & Tires | |
|---|---|
Wheelbase | 74.8 inches
189 cm |
Weight | 4883 lbs
2214 kg |
Front tire | 8-15 |
Rear tire | 13.6-28 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Battery AH | 110 |
Engine
Engine Detail — 168.1 ci / 2.8 L Diesel
Manufacturer | Yanmar 4TNV94 |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 168.1 ci
2.8 L |
Power | 45 hp
33.6 kW |
Rated RPM | 2500 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — 18 forward and reverse power shuttle
Type | power shuttle |
Gears | 18 forward and reverse |
Clutch | hydraulic wet disc |
Dimensions
Yanmar AF645 Tires | |
|---|---|
Standard tires (ag) | Front: 8-15. Rear: 13.6-28 |
Dimensions | |
|---|---|
Wheelbase | 74.8 inches
189 cm |
Length | 136.4 inches
346 cm |
Width | 63 inches
160 cm |
Height | 96.9 inches
246 cm |
Weight | 4883 lbs
2214 kg |
Ground clearance | 14 inches
35 cm |
Front tread | 47.2 to 58.3 inches
119 to 148 cm |
Rear tread | 50 to 63.7 inches
127 to 161 cm |
Photos
Yanmar AF645 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Yanmar AF645 based on its 45 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
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 Yanmar AF645.
Estimated Continuous Field Runtime: 7.4 hrs
Approximately 7.4 hours of continuous field operation at ~75% rated power on a full tank (17.2 gal / 65.1 L).
Estimated 75% Load Fuel Burn~2.3 gal/hr (8.9 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
Yanmar AF645 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Yanmar AF645.
Converted Equivalents:
Horsepower (HP)45 hp
Kilowatts (kW)33.6 kW
Metric Horsepower (PS / CV)45.6 PS
Direct Competitor Comparison
Compare Yanmar AF645 against same-era industry alternatives in the same horsepower class.
Current Model
Yanmar
Yanmar AF645
Engine Power:Diesel (listed): 45 hp / 33.6 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 404
Engine Power:40.8
Production Years:1961 - 1968
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