Service parts for the 40REZG
Grouped by system, with how many of each the parts manual calls for.
Oil system
1 requiredBelts
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Natural Gas / LP |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 39 kW |
| Standby kVA | 49 |
| Emissions | Tier 1 |
| Controller | Decision-Maker 3000, Decision-Maker 550 |
| Oil capacity | 4.3 L |
| Alternator | PMG |
| Voltage options | 208 V, 600 V, 127/220 V, 120/240 V, 220/380 V, 277/480 V, 347/600 V |
| Phase | 3 |
| Power factor | 0.8 |
| Battery cranking | 630 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 6.8 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 2200×1040×1172 mm |
| Sound level | 69.0 dBA @ 23 m |
Engine
| Oil capacity | 4.3 L |
|---|---|
| Coolant capacity | 15.0 L |
| Displacement | 4.3 L |
| Aspiration | Natural Aspiration |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the General Motors Vortec 4.3L| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Check for dirt or restriction | — | 1000 hr | ||
| Fuel filter | As recommended by OEM | — | 1000 hr | ||
| Oil filter | Filter, oil | GM28351 | Amazon $25.85 eBay $19.46 | ||
| Battery | — | 1000 hr | |||
| Belt | Belt, fan standard | GM16132 | Amazon eBay $86.00 | ||
| Coolant | 50/50 antifreeze and water mixture, DexCool Long Life type, min 300F boiling point, -34F freezing point | 6.8 | — | 1000 hr | |
| Oil | 5.7 L | — | 1000 hr | ||
| Spark plug | Spark plug | GM16531 | Amazon eBay $8.08 |
Service specifications
30| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | 10 in. weld flange bolt circle diameter B | 361.95 | mm (14.25 in.) | |
| Other | 10 in. weld flange outside diameter C | 406.4 | mm (16.0 in.) | |
| Other | 10 in. weld flange quantity of bolts / bolt hole diameter D | 12, 25.40 | mm (1.00 in.) | |
| Other | 12 in. weld flange bolt circle diameter B | 431.80 | mm (17.00 in.) | |
| Other | 12 in. weld flange outside diameter C | 482.6 | mm (19.0 in.) | |
| Other | 12 in. weld flange quantity of bolts / bolt hole diameter D | 12, 25.40 | mm (1.00 in.) | |
| Other | 14 in. weld flange bolt circle diameter B | 476.25 | mm (18.75 in.) | |
| Other | 14 in. weld flange outside diameter C | 533.4 | mm (21.0 in.) | |
| Other | 14 in. weld flange quantity of bolts / bolt hole diameter D | 12, 28.58 | mm (1.13 in.) | |
| Other | 16 in. weld flange bolt circle diameter B | 539.75 | mm (21.25 in.) | |
| Other | 16 in. weld flange outside diameter C | 596.9 | mm (23.5 in.) | |
| Other | 16 in. weld flange quantity of bolts / bolt hole diameter D | 16, 28.58 | mm (1.13 in.) | |
| Other | 18 in. weld flange bolt circle diameter B | 577.85 | mm (22.75 in.) | |
| Other | 18 in. weld flange outside diameter C | 635.0 | mm (25.0 in.) | |
| Other | 18 in. weld flange quantity of bolts / bolt hole diameter D | 16, 31.75 | mm (1.25 in.) | |
| Other | 20 in. weld flange bolt circle diameter B | 635.00 | mm (25.00 in.) | |
| Other | 20 in. weld flange outside diameter C | 698.5 | mm (27.5 in.) | |
| Other | 20 in. weld flange quantity of bolts / bolt hole diameter D | 20, 31.75 | mm (1.25 in.) | |
| Other | 5 in. weld flange bolt circle diameter B | 215.90 | mm (8.50 in.) | |
| Other | 5 in. weld flange outside diameter C | 241.30 | mm (9.50 in.) | |
| Other | 5 in. weld flange quantity of bolts / bolt hole diameter D | 8, 22.23 | mm (0.88 in.) | |
| Other | 6 in. weld flange bolt circle diameter B | 254.0 | mm (10.0 in.) | |
| Other | 6 in. weld flange outside diameter C | 279.4 | mm (11.0 in.) | |
| Other | 6 in. weld flange quantity of bolts / bolt hole diameter D | 8, 22.23 | mm (0.88 in.) | |
| Other | 8 in. weld flange bolt circle diameter B | 298.45 | mm (11.75 in.) | |
| Other | 8 in. weld flange outside diameter C | 342.9 | mm (13.5 in.) | |
| Other | 8 in. weld flange quantity of bolts / bolt hole diameter D | 8, 22.23 | mm (0.88 in.) | |
| Other | Weld flange angle A (10, 12, 14 in. nominal pipe size) | 30 | deg. | |
| Other | Weld flange angle A (16, 18, 20 in. nominal pipe size) | 22.5 | deg. | |
| Other | Weld flange angle A (5, 6, 8 in. nominal pipe size) | 45 | deg. |
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 |
|---|---|---|---|---|
| 12-Lead | Alternator Reconnections diagram ADV-5875B-M (page 16) | |||
| 4-Lead | Alternator Reconnections diagram ADV-5875A-M (page 15) |
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
How many kW is the Kohler 40REZG?
The Kohler 40REZG is rated 39 kW standby (49.0 kVA).
Which engine powers the Kohler 40REZG?
The Kohler 40REZG is powered by the General Motors Vortec 4.3L engine.
What fuel does the Kohler 40REZG use?
The Kohler 40REZG runs on Natural Gas / LP.
What's the oil capacity on a Kohler 40REZG?
The General Motors Vortec 4.3L engine in the Kohler 40REZG has an oil capacity of 4.3 liters.
What alternator comes on the Kohler 40REZG?
The Kohler 40REZG uses a PMG alternator.
What oil filter fits the Kohler 40REZG?
The Kohler 40REZG uses oil filter part number GM28351.
Parts
170| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 035685 | CLAMP HOSE #28 1.32-2.25 | 2 | Hose | Amazon eBay |
| 047290 | HOSE 3/8 ID SINGLE BRAID (16” LG) | 1 | Hose | Amazon eBay |
| 050967 | HOSE, 5/8 | 1 | Hose | Amazon eBay |
| 052865 | GASKET CARBURETOR | 1 | Gasket | Amazon eBay |
| 057422 | HOSE 1IN ID LP GAS | 1 | Hose | Amazon eBay |
| 057796 | GASKET AIR CLEANER | 1 | Air filter | Amazon eBay |
| 057822 | CLAMP HOSE #8 .53-1.00 | 2 | Hose | Amazon eBay |
| 057824 | CLAMP HOSE #16 .87 - 1.50 | 1 | Hose | Amazon eBay |
| 064945 | GASKET CARBURETOR ADAPTOR | 1 | Gasket | Amazon eBay |
| 080723 | HOSE CONNECTION TEE 1.75-.62 | 1 | Hose | Amazon eBay |
| 0A4632A | HOSE 1IN ID LP GAS (NATURAL GAS + VAPOR) (42") | 1 | Hose | Amazon eBay |
| 0A4637 | Air Cleaner | 1 | Air filter | Amazon eBay $49.95 |
| 0A5763 | CLAMP HOSE #16 .87 - 1.50 | 1 | Hose | Amazon eBay |
| 0A6613 | GASKET CARB IMPCO 225 | 1 | Gasket | Amazon eBay |
| 0C7060 | GASKET CARBURETOR ADAPTOR | 1 | Gasket | Amazon eBay |
| 253107 | Element, Air Cleaner | 1 | Air filter | Amazon $43.25 eBay $69.00 |
| 276206 | Hose, molded | 1 | Hose | Amazon eBay |
| A--253104 | Air Cleaner Element | 1 | Air filter | Amazon Amazon eBay eBay |
| A-273699 | Air Cleaner Assembly | 1 | Air filter | Amazon Amazon eBay eBay |
| GM16113 | Sensor, mag. speed 5/8-18 | 1 | Sensor | Amazon eBay |
| GM16132 | Belt, fan standard | 1 | Belt | Amazon eBay $86.00 |
| GM16150 | Gasket, carburetor | 1 | Gasket | Amazon eBay |
| GM16156 | Wires, spark plug | 1 | Spark plug | Amazon eBay |
| GM16158 | Hose, PVC (PCV system) | 1 | Hose | Amazon eBay |
| GM16178 | Starter | 1 | Starter | Amazon eBay |
| GM16215 | Seal, exhaust | 2 | Seal | Amazon eBay |
| GM16360 | Gasket, distributor | 1 | Gasket | Amazon eBay |
| GM16366 | Seal, crankshaft front oil | 1 | Seal | Amazon eBay |
| GM16383 | Gasket, valve rocker arm cover | 2 | Gasket | Amazon eBay |
| GM16385 | Seal, intake valve stem oil | 6 | Seal | Amazon eBay |
| GM16390 | Gasket, oil pan (year 2007 and earlier) | 1 | Gasket | Amazon eBay |
| GM16436 | Gasket kit, cylinder head (qty AR) | Gasket | Amazon eBay | |
| GM16440 | Pump kit, water (w/gasket) | 1 | Pump | Amazon eBay |
| GM16448 | Gasket kit, intake manifold (includes 2 gaskets) | 1 | Gasket | Amazon eBay |
| GM16465 | Gasket, cylinder head | 2 | Gasket | Amazon eBay |
| GM16479 | Hose, water pump inlet (includes clamps) | 1 | Hose | Amazon eBay |
| GM16482 | Pump, oil, .742 dia. tube (incl. items 38--43) | 1 | Pump | Amazon eBay |
| GM16483 | Gasket, water pump cover | 1 | Gasket | Amazon eBay |
| GM16487 | Gasket, crankshaft rear oil seal housing | 1 | Gasket | Amazon eBay |
| GM16489 | Seal, crankshaft rear oil (part of item 61) | 1 | Seal | Amazon eBay |
| GM16496 | Seal, exhaust valve stem oil | 6 | Seal | Amazon eBay |
| GM16531 | Spark plug | 1 | Oil filter | Amazon eBay $8.08 |
| GM16536 | Gasket, thermostat cover | 2 | Gasket | Amazon eBay |
| GM16537 | Thermostat, 160 degree | 8 | Oil filter | Amazon eBay $22.50 |
| GM16576 | Seal, oil pan drain plug (part of item 63) | 1 | Seal | Amazon eBay |
| GM16582 | Gasket, water pump (part of item 31) | 1 | Gasket | Amazon eBay |
| GM17380 | Gasket, manifold (fuel system) | 1 | Gasket | Amazon eBay |
| GM17386 | Gasket, mixer to air horn | 1 | Gasket | Amazon eBay |
| GM17392 | Gasket, throttle body to mixer | 1 | Gasket | Amazon eBay |
| GM24335 | Hose, water 5/8 ID x 6.88 in., 250 PSI | 1 | Hose | Amazon eBay |
| GM28351 | Filter, oil | 1 | Oil filter | Amazon $25.85 eBay $19.46 |
| GM28766 | Gasket, LC-50 valve | 1 | Gasket | Amazon eBay |
| GM29846 | Hose, 5/8 LP vapor w/wire reinforce x 15 in. | 1 | Hose | Amazon eBay |
| GM29852 | Hose, elbow 5/8 in. ID | 1 | Hose | Amazon eBay |
| GM39221 | Hose, rubber 2 in. ID | 1 | Hose | Amazon eBay |
| GM60238 | Gasket, man. adapter Venturi | 1 | Gasket | Amazon eBay |
| GM60247 | Sender, temp. unit E-controls | 1 | Sensor | Amazon eBay |
| GM75023 | Seal, crankshaft pos. sensor | 1 | Seal | Amazon eBay |
| GM75080 | Gasket, oil pan (year 2008 and newer) | 1 | Gasket | Amazon eBay |
| GM75082 | Sensor, crankshaft | 1 | Sensor | Amazon eBay |
| GM75179 | Gasket, Exh Manifold (single) | 2 | Gasket | Amazon eBay |
| GM75180 | Gasket, Exh Manifold (dual) | 2 | Gasket | Amazon eBay |
| GM79552 | Radiator | Radiator | Amazon eBay | |
| GM82861 | Hose, Intake | 1 | Hose | Amazon eBay |
| GM82862 | Bracket, Air Cleaner | 1 | Air filter | Amazon eBay |
| GM85017 | Belt, Alt | 1 | Belt | Amazon eBay $52.00 |
| GM86771 | Air Filter, Oil, qts. 5.0L GM83718 | 1 | Air filter | Amazon eBay |
| GM90280 | Air Cleaner Assy | 1 | Air filter | Amazon eBay |
| X-312-53 | Hose (0.63 in. ID x 24 in.) | 1 | Hose | eBay |
| X-391-19 | Connector, 90 degrees (5/8 in. ID hose) | 1 | Hose | eBay $30.00 |
| X-426-5 | Clamp, Hose, 3.56/4.5 IN. | 3 | Hose | Amazon eBay |
| X-504-22 | Fuel line, flexible (1.50"id x 28.25") - correct part | Hose | Amazon eBay | |
| X-582-1 | Connector, hose (5/8 in. x 1/2 in. MIP brass) | 1 | Hose | Amazon eBay |
| 022129 | WASHER LOCK M8-5/16 | 4 | Service part / kit | Amazon eBay |
| 022132 | SCREW HHC #10-24 X 3/4 YC | 2 | Service part / kit | Amazon eBay |
| 022145 | WASHER FLAT 5/16-M8 ZINC | 1 | Service part / kit | Amazon $11.99 eBay $10.66 |
| 022152 | WASHER LOCK #10 | 1 | Service part / kit | Amazon $23.99 eBay $12.00 |
| 022155 | WASHER LOCK #6 | 1 | Service part / kit | Amazon eBay |
| 022158 | NUT HEX #10-32 STEEL | 5 | Service part / kit | Amazon eBay |
| 022188 | NUT HEX #6-32 STEEL | 6 | Service part / kit | Amazon eBay |
| 022259 | NUT HEX 5/16-18 STEEL | 2 | Service part / kit | Amazon eBay |
| 022507 | WASHER LOCK #10 | 74 | Service part / kit | Amazon eBay |
| 022676 | FUSE AGC-15A. | 1 | Service part / kit | Amazon eBay |
| 023762 | SHAKEPROOF EXT. #10 | 1 | Service part / kit | Amazon eBay |
| 023897 | WASHER FLAT #10 ZINC | 4 | Service part / kit | Amazon eBay |
| 026307 | ELBOW 90 DEG STREET 3/4 | 3 | Service part / kit | Amazon eBay |
| 026490 | SOLENOID GAS FUEL | 1 | Service part / kit | Amazon eBay |
| 026577 | NIPPLE PIPE 3/4 NPT X 2 | 2 | Service part / kit | Amazon eBay |
| 027482 | WASHER SHAKEPROOF EXT 5/16 STL | 1 | Service part / kit | Amazon eBay |
| 027744 | SWITCH ROCKER DPST 125V SPD | 51 | Service part / kit | Amazon |
| 028641 | NIPPLE TOE 3/4 NPT X 2 | 1 | Service part / kit | Amazon eBay |
| 029333 | TFMR ASM,CMA 240/12V | 67 | Service part / kit | Amazon |
| 030468 | WASHER STEP NYLON .20 | 1 | Service part / kit | Amazon eBay |
| 032300 | FUSE HOLDER | 1 | Service part / kit | Amazon eBay |
| 033212 | SCREW HHC 5/16-18 X 1-1/4 G5 | 4 | Service part / kit | Amazon eBay |
| 036409 | NUT HEX 1/4-28 STEEL | 1 | Service part / kit | Amazon eBay |
| 036902 | DECAL, TERM. STRIP | 69 | Service part / kit | Amazon |
| 036908 | PLATE CSA NOT FOR RESALE | 71 | Service part / kit | Amazon |
| 037561 | NUT WING 1/4-20 NYLK | 1 | Service part / kit | Amazon eBay |
| 040213 | GROMMET 3/4 X 5/82 X 5/16 | 50 | Service part / kit | Amazon |
| 043123 | WASHER LOCK M14 | 4 | Service part / kit | Amazon eBay |
| 048476 | NUT, HDP DEUTSCH | 37 | Service part / kit | Amazon |
| 048766 | BLOCK TERM 20A 2 X 6 X 1100V | REF | Service part / kit | Amazon eBay |
| 049939 | RECTIFIER MSC 12A 600V | 1 | Service part / kit | Amazon eBay |
| 051778 | WASHER FLAT 9/16 ZINC | 2 | Service part / kit | Amazon eBay |
| 051779 | NUT HEX M14-2 G8 YEL CHR | 4 | Service part / kit | Amazon eBay |
| 055444 | HEATSINK | 42 | Service part / kit | Amazon |
| 055934Z | CLAMP VINYL 1.13 X .406 Z | 1 | Service part / kit | Amazon eBay |
| 055944 | BUSHING REDUCER 1 TO 3/4 | 1 | Service part / kit | Amazon eBay |
| 057335 | BLOCK TERM 20A 20 X 6 X 1100V | 1 | Service part / kit | Amazon eBay |
| 057795 | CONNECTOR C/C VENT | 1 | Service part / kit | Amazon eBay |
| 057907 | CIRCT BRK 4.5X1 AUTSOKW CNT45K RES WW LUG 10R 10% 25W | 39 | Service part / kit | Amazon |
| 058359 | LUG RNGTNG INS 22-18 X 5/16 X .477 | 1 | Service part / kit | Amazon eBay |
| 061391 | BLOCK TERM 20A 20 X 6 X 1100V | 68 | Service part / kit | Amazon |
| 061945 | VOLTMETER DC 8-18V | 1 | Service part / kit | Amazon eBay |
| 062522 | STUD TH 1/4-20 X 3 G2 ZNC FULL | 1 | Service part / kit | Amazon eBay |
| 064008 | COVER CON PNL TOP (NOT SHOWN) | 44 | Service part / kit | Amazon |
| 064009 | SWITCH SELECTOR 6A AMP/V | 56 | Service part / kit | Amazon |
| 064090 | SCREW PHM SEMS #12-24 X 5/8 EX | 4 | Service part / kit | Amazon eBay |
| 065907 | SUPPORT SOLENOID NAT GAS | 1 | Service part / kit | Amazon eBay |
| 067018 | REGULATOR NAT GAS LPG VAPOR | 1 | Service part / kit | Amazon eBay |
| 067680 | ASSY VOLTAGE REGULATOR 60HZ | 1 | Service part / kit | Amazon eBay |
| 070043 | AMMETER AC 0-200 | 60 | Service part / kit | Amazon |
| 070084 | VOLTMETER AC 0-300 | 59 | Service part / kit | Amazon |
| 070370 | WASHER MICA .203 | 1 | Service part / kit | Amazon eBay |
| 076009A | PCB SUPPORT SNAP-IN 1/4" | 49 | Service part / kit | Amazon |
| 076020 | HOLDER FUSE | 53 | Service part / kit | Amazon |
| 076037 | HOURMETER | 58 | Service part / kit | Amazon |
| 076061 | BLOCK TERM 20A 2 X 6 X 1100V | 66 | Service part / kit | Amazon |
| 076691 | NIPPLE PIPE 3/4 NPT X 4.5 BLK IRN | 1 | Service part / kit | Amazon eBay |
| 080069 | PADDLE HANDLE LOCK | 76 | Service part / kit | Amazon |
| 082573 | SWITCH RKR DPST 125V SPD | 1 | Service part / kit | Amazon eBay |
| 083264 | ASSY L.C. ELECT GOV | 64 | Service part / kit | Amazon |
| 084918C | HEATER, ENGINE 1800W 120V. | 1 | Service part / kit | Amazon eBay FridayParts $110.00 |
| 084918D | HEATER, ENGINE 2000W 240V. | 1 | Service part / kit | Amazon eBay |
| 087233 | RIVET POP .1875 X .450 SS | 2 | Service part / kit | Amazon eBay |
| 098647 | FREQUENCY METER 240V 55-65HZ | 61 | Service part / kit | Amazon |
| 0A4120 | ADAPTOR CARBURETOR W/INLET | 1 | Service part / kit | Amazon eBay |
| 0A4121 | CARBURETOR REWORK (LPG LIQUID) | 1 | Service part / kit | Amazon eBay |
| 0A4632B | ELBOW 90 DEG STREET 3/4 | 1 | Service part / kit | Amazon eBay |
| 0A6344 | BARBED EL 90 1/8 NPT X 3/8 | 1 | Service part / kit | Amazon eBay |
| 0AS968 | DECAL EXERCISE INFO | 62 | Service part / kit | Amazon |
| 0C2212 | CONNECTOR C/C VENT | 2 | Service part / kit | Amazon eBay |
| 0C2775 | SUPPORT REGULATOR | 1 | Service part / kit | Amazon eBay |
| 0C3168 | 5/16 SPECIAL L/WASH | 3 | Service part / kit | Amazon eBay |
| 0C7059 | CARB. REWORK 4.3L (NATURAL GAS + VAPOR) | 1 | Service part / kit | Amazon eBay |
| 0C7908 | SCREW SHC #10-32 X 5/8 G8.8 NZ | 4 | Service part / kit | Amazon eBay |
| 0C8243 | ASSY VOLTAGE REGULATOR 60HZ | 1 | Service part / kit | Amazon eBay |
| 0D1509 | DECAL INLET PRESSURE | 1 | Service part / kit | Amazon eBay |
| 0D1521A | CONTROL PANEL, FRONT W/ SILK SCREEN | 32 | Service part / kit | Amazon |
| 0D1522 | PANEL,SIDE COVER | 33 | Service part / kit | Amazon |
| 0D1523 | PANEL BTM & BACK CONTROL PANEL | 34 | Service part / kit | Amazon |
| 326228 | Block Heater | 1 | Service part / kit | Amazon eBay |
| 326229 | Block Heater | 1 | Service part / kit | Amazon eBay |
| 326232 | Installed Block Heater Kit (120V) | Service part / kit | Amazon eBay | |
| 326233 | Installed Block Heater Kit (240V) | Service part / kit | Amazon eBay | |
| 358311 | Block heater (kit GM84997-KP1-QS) | 1 | Service part / kit | eBay |
| 358327 | Block heater (kit GM84997-KP2) | 1 | Service part / kit | Amazon eBay |
| GM16160 | Valve, PCV | 1 | Service part / kit | Amazon eBay |
| GM17383 | Diaphragm, silicone (nat. gas or LP) - mixer | 1 | Service part / kit | Amazon eBay |
| GM17809 | Shield, heat (32 mm ID x 152 mm) | 1 | Service part / kit | eBay |
| GM23718 | Shield, heat (32 mm ID x 455 mm) | 1 | Service part / kit | eBay |
| GM62348-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| GM82973 | Mounting Bracket | 1 | Service part / kit | Amazon eBay |
| GM83718-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| GM86771-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| GM89979-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| GM93396-SKP1-QS | Maintenance Kit | 1 | Service part / kit | Amazon eBay |
| M6923-06-80 | Nut, Hex 6mm | 2 | Service part / kit | Amazon eBay |
| M933-06016-60 | Screw, hex cap, M6x16mm, js500 full thrd | 2 | 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.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Standby | 25% | 7.7 | 2.03 |
| Standby | 50% | 10.2 | 2.69 |
| Standby | 75% | 13.8 | 3.65 |
| Standby | 100% | 6.9 | 1.82 |
Available documents
Spec sheet (Kohler)Spec sheet — G4139 40REZG (Kohler)Reference (Kohler)Reference — G6-39 0918AZ (Kohler)Parts manual — tp6730 (Kohler)Service manual — tp6712 (Kohler)Service manual — tp6799 (Kohler)