Service parts for the 6.5RMY
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Standby power | 6.5 kW |
|---|---|
| Voltage options | 100 V, 120 V, 120/200 V, 240 V, 200 V |
| Phase | Single-phase,Three-phase |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Element, air cleaner | 278858 | Amazon eBay $30.48 | ||
| Fuel filter | Secondary | 278858 | Amazon eBay $30.48 |
Common questions
What is the power rating of the Kohler 6.5RMY?
The Kohler 6.5RMY is rated 6.5 kW standby.
What voltage does the Kohler 6.5RMY produce?
The Kohler 6.5RMY is offered in 100 V, 120 V, 120/200 V, 240 V, 200 V, Single-phase,Three-phase-phase.
What fuel filter fits the Kohler 6.5RMY?
The Kohler 6.5RMY uses fuel filter part number 278858.
Which air filter part number does the Kohler 6.5RMY take?
The Kohler 6.5RMY uses air filter part number 278858.
Troubleshooting
59Fault codes
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| Overcrank | Overcrank — Shutdown occurs after 45 seconds of continuous cranking; shutdown occurs after 75 seconds of cyclic cranking (crank 15 seconds, reset 15 seconds, crank 15 seconds, etc. for a total of 75 seconds); shutdown occurs after 15 seconds if engine or starter will not turn (locked rotor) | ||
| Overspeed | Overspeed — Generator set shuts down immediately if governed frequency exceeds 70 Hz (2100 rpm) on 50 and 60 Hz models | ||
| Low Oil Pressure | Low Oil Pressure — Shutdown occurs approximately 8 seconds after fault; fault occurs when engine oil pressure drops below specified limit | ||
| F1 | Fuse F1 (3-amp) on the controller circuit board protects the engine and controller circuitry | If the generator set will not crank or accessories will not work, and the battery/connections appear okay, one of these fuses may be blown | Replace fuse |
| F2 | Fuse F2 (3-amp) on the controller circuit board protects the engine and controller circuitry | If the generator set will not crank or accessories will not work, and the battery/connections appear okay, one of these fuses may be blown | Replace fuse |
| F3 | Fuse F3 (15-amp) on the controller circuit board protects the engine and controller circuitry | If the generator set will not crank or accessories will not work, and the battery/connections appear okay, one of these fuses may be blown | Replace fuse |
| V7 | Fuse V7 on the AC terminal block (TB2) protects the controller meters and lights | If the controller lights and meters are not functioning, check the condition of the V7, V8, and V9 fuses | Replace fuse |
| V8 | Fuse V8 on the AC terminal block (TB2) protects the controller meters and lights | If the controller lights and meters are not functioning, check the condition of the V7, V8, and V9 fuses | Replace fuse |
| V9 | Fuse V9 on the AC terminal block (TB2) protects the controller meters and lights | If the controller lights and meters are not functioning, check the condition of the V7, V8, and V9 fuses | Replace fuse |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Generator set will not crank | Weak or dead battery | Recharge or replace; check battery charger operation. Check battery charging circuit (circuit breaker, module, and wiring), if equipped. |
| Generator set will not crank | Reversed or poor battery connections | Check connections |
| Generator set will not crank | Fuse blown in controller | Replace fuse |
| Generator set will not crank | Defective starter/starter solenoid | Test function |
| Generator set will not crank | Defective start/stop switch (master switch) | Test function |
| Generator set will not crank | Generator master switch in OFF position (attempting start-up from remote switch) * | Move master switch to AUTO position |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Incorrect fuel | Replace fuel |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | No fuel | Add fuel; check fuel control circuit |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Clogged fuel filter (gasoline models only) | Replace fuel filter |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Air cleaner lever in the wrong temperature position (6.5 kW models only) | Place air cleaner lever in correct position for winter or summer starting (6.5 kW) |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Air cleaner clogged | Clean and/or replace |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Weak or dead battery | Recharge or replace |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Defective fuel pump (gasoline models only) | Check fuel pump for function |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Defective fuel valve or (gas models only) | Check fuel valve for function |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Defective antidiesel solenoid (gasoline models only) | Check antidiesel solenoid for function |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Defective carburetor choke (gasoline models only) | Check function of carburetor choke |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Defective fuel regulator (gas models only) | Check function of fuel regulator |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Faulty ground (--) connection | Clean and tighten ground connections |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Faulty spark plugs | Replace (and regap) spark plugs |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Defective ignition system | Check ignition coil, module, and wiring |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Loose spark plug wire connection | Check spark plugs wires |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Insufficient fuel pressure (gas models only) | Check fuel pressure |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Engine malfunction | Troubleshoot engine |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Defective cold weather starting aid | Check cold weather starting device |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Low oil pressure shutdown switch | Check oil level, oil pressure, and check switch for function |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Carburetor adjustment incorrect | Adjust carburetor |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Carbon build-up on cylinder heads | Service cylinder heads |
| Generator set cranks but will not start, starts hard, lacks power or operates erratically | Incorrect engine timing (signal) | Check air gap of ignition pickup |
| No AC output | AC circuit breaker in OFF position | Place circuit breaker in ON position |
| No AC output | AC circuit breaker tripping because of overload | Reduce load on generator set |
| No AC output | AC circuit breaker tripping because of short circuit | Correct cause of short circuit |
| No AC output | Voltage regulator fuse blown | Replace fuse |
| No AC output | Internal generator problem | Contact distributor |
| Low output or excessive drop in voltage | Generator set overloaded | Reduce load |
| Low output or excessive drop in voltage | Engine speed too low | Check governor |
| Low output or excessive drop in voltage | Faulty/misadjusted voltage regulator | Check voltage regulator adjustment and/or test voltage regulator |
| Low output or excessive drop in voltage | Internal generator problem | Contact distributor |
| High output voltage (or high frequency) | Loose voltage regulator connections | Check connections |
| High output voltage (or high frequency) | Governor misadjusted (high frequency) | Check governor |
| High output voltage (or high frequency) | Faulty voltage regulator | Check voltage regulator adjustment and/or test voltage regulator |
| High output voltage (or high frequency) | Internal generator problem | Contact distributor |
| Generator set stops suddenly | Low oil pressure shutdown | Check oil level, oil pressure, and switch for function |
| Generator set stops suddenly | Out of fuel | Add fuel |
| Generator set stops suddenly | Overcrank shutdown * | Reset controller. If overcrank fault reoccurs, troubleshoot generator and/or controller |
| Generator set stops suddenly | Fuse blown in controller | Replace fuse. If fuse blows again, troubleshoot controller |
| Generator set stops suddenly | Engine malfunction | Troubleshoot engine |
| Generator set stops suddenly | Overspeed shutdown * | Reset controller. If generator set overspeeds again, troubleshoot generator and controller |
| Generator set stops suddenly | Overvoltage shutdown (if equipped) * | Troubleshoot generator and controller |
| Generator set stops suddenly | Generator master switch in OFF/RESET position * | Move switch to correct position (RUN or AUTO) |
| Generator set stops suddenly | Emergency stop switch activated (local or remote) * | Check reason for emergency shutdown; reset switch |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
10| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 227853-B | lead 70A | 1 | Wire | Amazon eBay |
| 278858 | Element, air cleaner | Air filter | Amazon eBay $30.48 | |
| ADV-5815B-A | Fuel inlet | Fuel filter | Amazon eBay | |
| 226682 | Hang tag identifying units which do not require conversion using the spring and retainer | Service part / kit | Amazon eBay | |
| 241619 | Kohler Part Number for Plug Connector (B-258296 Version) | Service part / kit | Amazon eBay $6.00 | |
| 258558 | Fuel conversion hang tag (remove and discard) | Service part / kit | Amazon eBay | |
| A--258296 | Kohler PowerBoostä V Voltage Regulator (A-258296 Version) | Service part / kit | Amazon eBay | |
| ADV-5815A-B | Weather housing louvers (air inlet) | Service part / kit | Amazon eBay | |
| ADV-5815C-A | Exhaust muffler location | Service part / kit | Amazon eBay | |
| B-258296 | Kohler PowerBoostä V Voltage Regulator (B-258296 Version) | 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.
Available documents
Parts manual — g260412 (Kohler)Service manual — sb527 (Kohler)Service manual — sb558 (Kohler)Service manual — tp5631 (Kohler)Service manual — tp5815 (Kohler)
This page was generated from the 5 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.