Specifications
Ratings spec sheet not in our library yet — see the documents below.
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | 12-volt group 51 battery with a minimum rating of 500 cold cranking amps at 0_F | — | |||
| Belt | — | ||||
| Coolant | — | ||||
| Oil | — | ||||
| Spark plug | — |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Service intervals
12| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Automatic control system test | Test | 1 mo | Monthly, per Section 2.8 | |
| Contactor external operating mechanism cleanliness | Clean | 12 mo | Yearly; clean and relubricate if dirty; service more frequently in dusty/dirty areas | |
| Control and power wiring connections | Other | 12 mo | Yearly; tighten connections to specifications per Section 2.5 | |
| External hardware in place, tightened, not badly worn | Check | 1 mo | Monthly | |
| Inside of transfer switch (vibration, leakage, high temp, contamination, deterioration) | Inspect | 12 mo | Yearly | |
| Internal hardware in place, tightened, not badly worn | Check | 12 mo | Yearly | |
| LED indicators and remote control systems | Test | 12 mo | Yearly, per Section 3.2 | |
| Main power switching contacts condition | Inspect | 12 mo | Yearly (S/M = per service manual); clean or replace main contacts or contactor assembly as necessary | |
| Outside of transfer switch (vibration, leakage, high temp, contamination, deterioration) | Inspect | 1 mo | Monthly | |
| SPD module status indication light (SE model only, if equipped) | Check | 2 mo | Every 2 months, per Section 4.4.1 | |
| Signs of overheating or loose connections (discoloration, melted plastic, burning odor) | Inspect | 12 mo | Yearly; visually inspect and check, per Service Schedule Section 6.4 | |
| Wiring insulation for deterioration, cuts, or abrasion | Inspect | 12 mo | Yearly; repair or replace deteriorated/damaged wiring |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Service specifications
24| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Engine Cooldown time delay | 5 | minutes (factory setting; 1-10 min adjustable) | |
| Other | Engine Start time delay | 3 | seconds (factory setting; 1-10 sec adjustable with accessory board) | |
| Other | Exercise Time Duration | 20 | minutes (factory setting; 5-50 min adjustable with accessory board) | |
| Other | Failure to Acquire Emergency time delay | 78 | seconds (not adjustable) | allows three 15-second engine cranking cycles plus 15-second rest periods |
| Other | Frequency sensing accuracy (emergency/GEN source) | 2 | % | |
| Other | Load Control Time Delay | 5 | minutes (or 10 minutes via DIP switch) | |
| Other | Retransfer from Emergency to Normal time delay | 6 | minutes (factory setting; 3-30 min adjustable) | |
| Other | Transfer from Normal to Emergency time delay | 3 | seconds (factory setting; 1-10 sec adjustable) | |
| Other | Underfrequency Dropout Time | 3 | seconds (fixed) | |
| Other | Underfrequency dropout | 90 | % | |
| Other | Underfrequency dropout (Emergency/GEN source only) | 90 | % of nominal | |
| Other | Underfrequency pickup | 96 | % | |
| Other | Underfrequency pickup (Emergency/GEN source only) | 96 | % of nominal | |
| Other | Undervoltage Dropout Time | 0.5 | second (fixed) | |
| Other | Undervoltage dropout (Normal source) | 80 | % of nominal | |
| Other | Undervoltage pickup (Normal source) | 85 | % of nominal | |
| Other | Voltage sensing accuracy | 5 | % (single-phase, both sources) | |
| Temperature | Operating Temperature | -20 to 70 | C (-4 to 158 F) | |
| Temperature | Storage Temperature | -40 to 70 | C (-40 to 158 F) | |
| Torque | Accessory board terminal connections | 0.5 | Nm (4.4 in-lb) | |
| Torque | Enclosure mounting screws | 2.9 | Nm (26 in-lb) | |
| Torque | SPD module mounting screws | 3 | Nm (26 in-lb) | SE models |
| Voltage | Undervoltage dropout | 80 | % | |
| Voltage | Undervoltage pickup | 85 | % |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Procedures
3Controller Fault Reset diagnostic
⚠ Common Fault output remains closed until faults are reset.
- Identify and correct the cause of the fault condition before resetting.
- Press and hold the Exercise and Test buttons for about 3 seconds until LEDs flash to clear faults/warnings.
Controller Reset diagnostic
- Press and hold both buttons for 6 seconds to reset the controller to its powerup state.
- Re-set the exercise time and day after resetting, since resetting clears the exerciser setting.
SPD Module Replacement repair
⚠ Hazardous voltage. Will cause severe injury or death. Must be installed and serviced by qualified electrical personnel.
⚠ Deenergize all power sources before servicing.
Tools: screwdriver
- Remove the ATS enclosure front panel and move the battery charger circuit breaker to OFF.
- Turn the generator set OFF and disconnect power to the battery charger.
- Disconnect the generator set starting battery, negative lead first.
- Move the Normal service disconnect circuit breaker to OFF.
- Remove the ATS enclosure inner panel.
- Disconnect the SPD leads from the normal source breaker, ground, neutral, and terminal block.
- Remove the 4 SPD mounting screws.
- Install the new module and tighten mounting screws to 3 Nm (26 in-lb).
- Connect the SPD leads per the service entrance wiring diagram.
- Replace the enclosure inner panel.
- Close the Normal and Emergency service disconnect circuit breakers.
- Reconnect the generator set starting battery, negative lead last.
- Reconnect power to the battery charger and close its breaker.
- Replace the ATS enclosure front panel.
- Put the generator set into AUTO mode.
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Voltage reconnection
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| Emergency source lugs EA/EB | Emergency (generator) source | Connect generator set output to lugs labeled EA and EB | ||
| Load lugs LA/LB | Load | On models without built-in load center; on load-center models LA/LB are factory-wired to the load center | ||
| Normal source lugs NA/NB | Normal (utility) source | Connect utility power to lugs labeled NA and NB | ||
| 100 Amps | single-phase | Normal and Emergency per phase: (1) #14 to 1/0 AWG | Load center models with QO breakers | |
| 200 Amps | single-phase | Normal and Emergency per phase: (1) #6 AWG to 250 KCMIL | Standard models | |
| 220 | Model code 'D' | 220 Volts/50 Hz per Kohler model designation key | ||
| 240 | 2-pole, 3-wire, solid neutral | Model code 'F' + 'N' | 240 Volts/60 Hz, 2-pole/3-wire solid neutral per Kohler model designation key | |
| 400 Amps | single-phase | Normal and Emergency: (2) #1/0 AWG to 250 KCMIL or (1) #4 AWG to 600 KCMIL | Standard models |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Time delay | Normal-to-emergency to time out. | Check time delay settings. See Figure 2-2. Enough time must elapse for the time delay emergency-to-normal timer to time out. |
| Generator voltage is out of range or emergency source sensing circuits are malfunctioning. | Check the emergency source voltage. Repair or adjust generator set if the output voltage is it is out of range, otherwise see Section 5.4. | |
| Transfer switch operation problems. | See Section 4.5, Transfer Switch Troubleshooting. | |
| ATS fails to retransfer the load to the normal source after the normal source returns (Also see Figure 4-5) | Normal source circuit breaker is open. | Close circuit breakers leading from the normal source to the transfer switch. |
| Emergency-to-normal retransfer time delay has not timed out. | Check time delay settings. See Figure 2-2. Enough time must elapse for the time delay emergency-to-normal timer to time out. | |
| Normal source voltage levels are out of range. | Check the normal source voltage. See Section 5.1. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Kohler RDT troubleshooting guide (38 entries) →
Repair guides
7- Section 1 Specifications and Service Views
- Section 1 Specifications and Service Views
- Section 1 Specifications and Service Views
- Section 1 Specifications and Service Views
- Section 1 Specifications and Service Views
- Service Procedure
- (required for service entrance applications)
Step-by-step procedures compiled from the Kohler service manual for this model.
Parts
2model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| GM40040 | Gasket, compression latch | 2 | Gasket | Amazon |
| GM20990 | Label, Blank | 2 | Service part / kit | Amazon eBay |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Reference (Kohler)Reference — TP-6753 0914D (Kohler)Reference — g11151 (Kohler)Reference — tp6753 (Kohler)Parts manual — pb122 (Kohler)Service manual (Kohler)Service manual — TP-6346 1218B (Kohler)Service manual — TP-7091 (Kohler)Service manual — tp6345 (Kohler)Service manual — tp6346 (Kohler)Service manual — tt1403 (Kohler)Service manual — tt1403 DIGITAL EXERCISE KITS (Kohler)Service manual — tt1609 (Kohler)Service manual — tt1646 (Kohler)