Service parts for the S12A2
Grouped by system, with how many of each the parts manual calls for.
Oil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 800 kW |
| Emissions | EPA Tier 2 |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 1000 hr | |||
| Fuel filter | — | 500 hr | |||
| Oil filter | 36291-00900 | 100 hr | Amazon eBay | ||
| Battery | — | ||||
| Belt | — | 59 hr | |||
| Coolant | — | 2500 hr | |||
| Coolant filter | — | 43 hr | |||
| Oil | — | 100 hr | |||
| Spark plug | — | 1000 hr |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Service specifications
5| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Pressure | Compression pressure minimum | 24 | kgf/cm2 | 120-200 rpm |
| Pressure | Injection pressure | 220 | kgf/cm2 | |
| Torque | Cylinder head | 40 | kgf-m | Wet |
| Valve clearance | Exhaust valves | 0.5 | mm | cold |
| Valve clearance | Inlet valves | 0.4 | mm | cold |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Common questions
What size generator is the Mitsubishi S12A2?
The Mitsubishi S12A2 is rated 800 kW standby.
What fuel does the Mitsubishi S12A2 use?
The Mitsubishi S12A2 runs on diesel.
Which oil filter part number does the Mitsubishi S12A2 take?
The Mitsubishi S12A2 uses oil filter part number 36291-00900.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Battery discharged | Check alternator (2D . drive belt, Consult your Mitsubishi dealer, Recharge, Change. | |
| Starter will crank engine, but engine will not start. | Fuel system issues | Refuel, Check connection, Fuel pipe defective (Bad quality fuel) > Change fuel. Air in fuel system > Prime. Consult your Mitsubishi dealer. Fuel filter clogged > Clean or repair. Fuel pipe restricted or leaky > Clean or repair. Fuel feed pump defective > Consult your Mitsubishi dealer. Air & EArAustoy systems Air cleaner clogged > Clean element. Fuel injection pump detective > Consult your Mitsubishi dealer. |
| Air motor will not run. | Low air pressure, Defective starter switch, Defective magnetic valve broken connections | Operate the compressor to increase the pressure in the air tank. Repair broken wires. Consult your Mitsubishi dealer. |
| Air motor runs, but pinion gear will not be engaged with ring gear. | Damaged ring gear or pinion gear | Consult your Mitsubishi dealer. |
| Pinion gear is engaged with ring gear, but ring gear will not rotate. | Low air pressure | Run the compressor to increase the pressure in the air tank. |
| Engine lacks power. | Oil viscosity incorrect, Bad quality fuel, Insufficient air (air cleaner element clogged), Radiator overcooled | Change oil. Change fuel. Clean or change. Use radiator cover or consult your Mitsubishi dealer. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Mitsubishi S12A2 troubleshooting guide (12 entries) →
Parts
17| Part # | Description | Qty | System | |
|---|---|---|---|---|
| F2515-12000 | /WASHER, SPRING 1 1 025153- A|\V | 1 | Oil filter | Amazon eBay |
| 05633-41000 | /NUT 6 6 02523 7 | 1 | Service part / kit | Amazon |
| 2007-02-23 | Service part / kit | Amazon | ||
| 260719-01 | 7A | Service part / kit | Amazon | |
| 32625-05900 | C/} COUPLING 1 1 V | 311 | Service part / kit | Amazon |
| 34A48-02200 | |WASHER 6 6 02523 7- A | 1 | Service part / kit | Amazon |
| 36232-03600 | /RING 6 6 025340 | 1 | Service part / kit | Amazon |
| 37132-01600 | /RING 6 6 025340 | 1 | Service part / kit | Amazon |
| 37525-07901 | |WASHER 23 23 02523 7- A | 1 | Service part / kit | Amazon |
| 42790-03416 | /U-BOLT 2 2 02523 7 | 1 | Service part / kit | Amazon |
| 7007-02-23 | Service part / kit | Amazon | ||
| 99260-20160 | Service part / kit | Amazon eBay | ||
| F1035-12050 | /BOLT 6 6 02523 7- A | 1 | Service part / kit | Amazon |
| F1155-12030 | /BOLT 17 17 02523 7- A | 1 | Service part / kit | Amazon |
| F1155-12040 | /BOLT 7 7 02523 7- A | 1 | Service part / kit | Amazon |
| F2500-10000 | /WASHER, PLAIN 6 6 02523 7- A | 1 | Service part / kit | Amazon eBay $34.95 |
| F2515-10000 | /WASHER, SPRING 6 6 02523 7- A | 1 | Service part / kit | Amazon eBay |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.