Iseki TH185-TH265 Maintenance Schedule and Adjustment Values
Suitable for the entire series: Iseki TH185, TH205, TH215, TH235, TH255 and TH265. Regular maintenance is the key factor in keeping these mechanically simple tractors running for decades. Below is the complete maintenance schedule and all adjustment values straight from the Iseki factory manual.
Maintenance Schedule
| Component | Action | Interval |
|---|---|---|
| Engine oil | Replace | Every 100 hours |
| Engine oil filter | Replace | Every 200 hours |
| Air filter element | Clean / replace | Clean every 100h, replace every 600h or 1x/year |
| Coolant (reservoir) | Check / top up | Every 100h; full replacement every 600h or 2 years |
| Radiator (housing) | Clean | 1x every 2 years |
| Radiator hoses | Inspect / replace | Inspect every 200h, replace 1x/year |
| Fuel filter | Clean / replace | Clean every 100h, replace every 400h |
| Fuel lines/hoses | Inspect / replace | Inspect every 100h, replace 1x/2 years |
| Fan belt | Inspect | Every 100 hours |
| Battery (fluid level) | Inspect | Every 100h or 1x/year |
| Engine valve clearance | Inspect | Every 600 hours |
| Transmission oil | Replace + clean strainer | Every 200 hours |
| Transmission oil filter | Replace | Every 200 hours |
| Front axle oil | Check / replace | Check 200h, replace 600h |
| Clutch pedal play | Check / adjust | Every 100 hours |
| Brake pedal play | Check / adjust | Every 200 hours |
| Steering joint | Check / adjust | Every 200 hours |
| Tire pressure | Check | Every 200 hours |
| Wheel bolts | Check | Every 100 hours |
| Power steering hoses | Inspect / replace | Inspect 100h, replace 1x/2 years |
| Grease nipples (general) | Top up grease | Every 50 hours, daily during wet field/plowing work |
Cab version (air conditioning): check/adjust belt every 200h, clean condenser every 200h, check hoses 1x/year, clean filter 1x/month.
Semi-track version (S25): adjust track tension according to procedure, grease lubrication points (2+4+6 points) every 50 hours, check oil seals of running/tension wheels every 200h.
Adjustment Values
| Component | Value |
|---|---|
| Clutch pedal play | 20-30 mm |
| Brake pedal play (left/right equal) | 30-40 mm |
| Steering play (steering wheel outer rim) | 30-60 mm |
| Fan belt deflection | 5-10 mm at medium finger pressure |
| Track deflection (semi-track) | 15-20 mm |
| Wheel bolt torque (rear wheel) | 98-118 N·m (standard), 196-230 N·m (cab version) |
Note: these tractors do not have a separate drive V-belt system — the belt mentioned only drives the fan and (if fitted) the air conditioning compressor, not the drivetrain.
Practical tip: always link brake pedals together on public roads
The left and right brake pedals can be operated independently for sharp turning in the field. For use on public roads, the manual explicitly requires linking both pedals together — don't forget this, as operating them separately on the road is an important point highlighted in the safety chapter.
For the engine oil change: Engine Oil 15W-40 (SKU-15W40) and Engine Oil Filter Iseki TM | TH | SXG | SF (SKU-002/6).
