The Kohler KDW 502 is a 0.5 L 4-cylinder air/water dc 2 x engine rated at 3600 rpm, producing up to 8.4 kW. It powers generator sets from SDMO, including the S6HM, S7H and XP-S6HM-STORM. It holds 1.4 L (0.4 gal) of oil and 2.5 L (0.7 gal) of coolant.
Also known as: Kohler Diesel KDW 502
| Oil capacity | 1.4 L |
|---|---|
| Coolant capacity | 2.5 L |
| Displacement | 0.5 L |
| Cylinders | 4 |
| Aspiration | Air/Water DC 2 X |
| Rated speed | 3600 rpm |
| Gross power | 8 kW |
| Symptom | Cause | Remedy |
|---|---|---|
| The engine does not start | Sulphated battery terminals corroded, Battery voltage too low, Low fuel level, Frozen fuel, Clogged fuel filter, Air suction in fuel system, Clogged air filter, Clogged pipes, Open fuse, Intake or exhaust system clogged | Clean the battery terminals, Recharge the battery or replace it, Refuel, Contact KOHLER authorised workshops, Replace with a new filter, Contact KOHLER authorised workshops, Replace with a new filter, Contact KOHLER authorised workshops, Clean the tank and refuel with quality fuel, Replace the engine oil; if the problem persists, contact KOHLER authorised workshops, Replace with a new fuse; if the problem persists, contact KOHLER authorised workshops |
| Engine starts but stops | Inefficient electrical connections, Sulphated battery terminals, Clogged fuel filter, Clogged fuel pipes | Clean the electrical contacts; if the problem persists, contact KOHLER authorised workshops, Clean the battery terminals, Replace with a new filter and clean the tank, Contact KOHLER authorised workshops |
| RPM instability at idle speed | Clogged fuel pipes | Contact KOHLER authorised workshops |
| Low idle speed | Clogged fuel pipes | Contact KOHLER authorised workshops |
| Poor quality fuel | Clean the tank and refuel with quality fuel | |
| Blue smoke | High oil sump level | Replace the engine oil; if the problem persists, contact KOHLER authorised workshops |
| Excessive fuel consumption | High oil sump level | Replace the engine oil; if the problem persists, contact KOHLER authorised workshops |
| Engine lost its initial performance | Clogged air filter, Clogged fuel pipes | Replace with a new filter, Contact KOHLER authorised workshops |
| Slow acceleration | Clogged fuel filter | Replace the fuel filter |
| Engine jerking | Clogged fuel pipes | Contact KOHLER authorised workshops |
Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | 2.5 L | — | |||
| Oil | 1.4 L | — | |||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Engine oil | SAE 15W40 | Sold by SDMO in 0.5 L (RBH0,5) and 1 L (RBH1) bottles |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
The Kohler KDW 502 engine has an oil capacity of 1.4 liters.
The Kohler KDW 502 has a displacement of 0.5 liters with 4 cylinders.
The Kohler KDW 502 powers 3 generator set(s), including SDMO S6HM, SDMO S7H, SDMO XP-S6HM-STORM.