Looking for Yanmar AF-33 parts? Browse our complete range of compatible spare and maintenance parts for the Yanmar AF-33 mini tractor—including filters, engine parts, cooling, electrical, and hydraulic components—available directly from stock for fast worldwide delivery.
| Specification | Value |
|---|---|
| General | |
| Brand | Yanmar |
| Model | AF-33 |
| Build years | 1993-1999 |
| What to look for when buying | Inspection points, common issues and price guide View buying guide → |
| Engine | 3TNS84 |
| Bore × stroke | 84 × 90 mm |
| Power | 33 hp at 2800 rpm |
| Replace engine oil element (oil filter) | According to schedule (together with oil change) |
| Drain fuel water / fuel filter element | Periodically according to schedule |
| Clean/replace air filter element | Periodic (more often in dusty conditions) |
| Clean radiator screen and cooling system | Check regularly |
| Valve clearance, injection timing, injectors | Periodic workshop check |
| Air filter | AF-22 to AF-33 |
| Fuel filter | AF-22 to AF-33 |
| Change the engine oil and oil filter | Old oil contains acids and moisture that cause damage during downtime |
| Fill the tank or add a fuel stabilizer | A full tank limits condensation; fresh diesel separates less |
| Key switch or starter motor faulty | Have it checked at the workshop |
| No or insufficient fuel | Refuel; check that the fuel tap is open ("0") |
| Air in the fuel system | Bleed the system |
| Clogged fuel filter | Replace the filter element |
| Drivetrain | |
| Max. speed | 13.9 / 14.2 km/h |
| Drive | Four-wheel drive (4WD) |
| Main clutch | Dry single plate |
| Differential | Bevel gear with diff lock |
| Final drive | Spur gears |
| Foot brake | Wet disc brake |
| Parking brake | Pedal lock |
| Check/change transmission oil | According to schedule |
| Clutch pedal play | 15–25 mm |
| Brake pedal play | 30–40 mm |
| Transmission line filter | AF-22 to AF-33 |
| Clutch not fully depressed | Press the pedal all the way down when starting |
| Dimensions | |
| Length (to lower link) | 3180 mm |
| Width (standard) | 1380 / 1410 mm |
| Wheelbase | 1800 mm |
| Ground clearance | 320 / 345 mm |
| Weight (with 3-point hitch) | 1380 / 1430 kg |
| Front tires | 8-16 |
| Rear tires | 12.4-24 |
| Weight (3P) | 1430 kg |
| Capacities | |
| Fuel tank | 38.0 L |
| Engine oil | 4.0 L (15W40) View 15W40 → |
| Coolant (radiator) | 6.0 L View coolant → |
| Transmission oil | 40.0 L (80W GL-4) View 80W GL-4 → |
| Front axle | 5.6 L (80W90) View 80W90 → |
| Check battery (fluid / recharge) | Periodic |
| Other | |
| Displacement | 1496 cc |
| Steering | Full hydraulic power steering |
| Lift mechanism | 3-point hitch JIS category 1, with position control |
| Safety frame | 2-post (foldable frame available) |
| Electrical system | 12V — 420W alternator, 1.2 kW starter motor |
| AF-30 / AF-33 | 595 / 816 / 1039 / 1352 rpm (+ reverse PTO) |
| Size class | Large |
| 3TNS82 | AF-22, AF-24 |
| 3TNS84 | AF-26, AF-28, AF-30, AF-33 |
| Small | AF-22, AF-24 |
| Medium | AF-26, AF-28 |
| Large | AF-30, AF-33 |
| Check/change front axle oil | According to schedule |
| V-belt (fan belt) tension | 1st check at 50 hours, then periodically |
| Retighten bolts and nuts | Periodic |
| Grease all lubrication points | Periodic |
| V-belt (fan belt) deflection | 10–15 mm |
| Steering wheel play | 20–50 mm |
| Front wheel toe-in | 4–8 mm |
| Dusty work | every 50 hours |
| Normal conditions | every 100 hours |
| 1 | Fill up the fuel tank |
| 2 | Set the fuel valve to position "0" (open) |
| 3 | Set the throttle lever to maximum speed, turn the key to "START" and let the starter motor run for about 10 seconds |
| Oil filter (M20×1.5) | AF-22 to AF-33 |
| Clean and dry the tractor | Dirt and crop residue retain moisture and cause rust |
| Disconnect the battery or keep it on charge | Prevents the battery from draining and freezing |
| Lower the lift and implements to the ground | Relieves the hydraulics and cylinders during downtime |
| Store the tractor in a dry, covered place | Protects against moisture, frost, and UV |
| Battery flat or terminals loose/dirty | Charge or replace the battery, clean and tighten the terminals |
| Fuse blown | Replace the fuse with one of the correct rating |
| Old or clouded (winter) diesel | Drain the old fuel, refuel with fresh diesel |
| Thermo-start not waited out (cold weather) | Turn the key to ON, wait until the thermo-start light goes out |
| V-belt loose or worn | Tension the belt (10–15 mm deflection) or replace it |
| Radiator screen or fins clogged | Clean the radiator and screen |
| Worn splines on the sliding coupling | The coupling between the transmission and the front axle differential can wear on the spline, causing it to lose grip |
| Sheared or broken pin | If the pin shears, the coupling spins loosely on the spline; the teeth on the pinion are harder than those in the coupling |
| Ball coupling at the front axle | Some couplings contain small balls that can pop out of place, preventing the drive from engaging |
| AF-30 / AF-33 (30–33 hp) | ± 1.6–1.7 m |
| 4 | Throttle lever at (near) maximum speed |
| 5 | Turn the key to ON; in cold weather the thermo-start light will illuminate — wait until it goes out |
| 6 | Fully depress the clutch pedal and turn the key to START |
| 7 | As soon as the engine is running: release the key immediately (it will spring back to ON) |
| Above 5 °C | Less than 1 second |
| Below 5 °C | 3 to 15 seconds |
Maintaining or repairing your Yanmar AF-33 mini tractor starts with parts that fit accurately. On this page you will find all compatible Yanmar AF-33 spare parts—from oil, fuel, and air filters to water pumps, radiator hoses, clutches, brakes, front axle seals, three-point linkage parts, and electrical components. Use the category filter to quickly jump to the exact assembly for your Yanmar AF-33.
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