Section 1 – Parts List
This section provides a detailed list of parts for the Miller Bobcat 250, organized by item number, part number, and description. The parts are categorized by their assembly or function.
Figure 1-1. Main Assembly
This diagram illustrates the main assembly of the Bobcat 250 welder/generator, showing the overall layout of major components. It includes parts such as the front panel, engine, generator, fuel tank, and various covers and shields.
| Item No. | Dia. Mkgs. | Part No. | Description | Quantity |
|---|---|---|---|---|
| 1 | Figure 1-3 | Front Panel Assembly | 1 | |
| 2 | SR1 | 249234 | Rectifier | 1 |
| 3 | 249262 | Reactor, Stab | 1 | |
| 4 | 249241 | Upright, Base | 1 | |
| 5 | 249256 | Heat Shield, Muffler | 1 | |
| 6 | 249250 | Door, Side Rh | 1 | |
| †255940 | Door, Side Rh W/Latch And Seal | 1 | ||
| 7 | 249248 | Panel, Side Rh | 1 | |
| †255942 | Panel, Side Rh W/Bumper | 1 | ||
| 8 | 252069 | Shield, Heat Reflective (Cover) | 1 | |
| 9 | 249244 | Door Assy, Access Engine Top | 1 | |
| 10 | †249252 | Cover, Top | 1 | |
| †255907 | Cover, Top Service Assy (Includes Engine Access Door, Labels, Fuel Filler Grommet) | 1 | ||
| †255908 | Cover, Top Service Assy LP (Includes Engine Access Door, Labels, Fuel Filler Grommet) | 1 | ||
| 11 | 249249 | Panel, Side Lh | 1 | |
| †255943 | Panel, Side Lh W/Bumper | 1 | ||
| 12 | 249251 | Door, Side Lh | 1 | |
| †255941 | Door, Side Lh W/Latch And Seal | 1 | ||
| 13 | 211370 | Latch, Door | 5 | |
| 14 | 233088 | Label, Danger Using A Generator Indoors Can Kill | 1 | |
| 217395 | Bumper, Door .500 Od X .250 High Nprn 70 Duro | 10 | ||
| 220371 | Seal, Rubber W/Adhesive .370 X .750 X 14.500 | 2 | ||
| 191626 | Bumper, Door Access Engine | 1 | ||
| 15 | 249317 | Pipe, Exhaust Elbow w/Resonator (Prior to MF220012F) | 1 | |
| 249318 | Pipe, Exhaust Elbow (Eff w/MF220012F) | 1 | ||
| 16 | 249302 | Label, Warning Gasoline (Epa) Bilingual | 1 | |
| 229133 | Label, Warning LP Gas (Bilingual) | 1 | ||
| 17 | 255052 | Label, Warning General Precautionary Csa (Bilingual) | 1 | |
| 18 | 249280 | Baffle, Air Rear | 1 | |
| 19 | 249239 | Panel, Rear | 1 | |
| 20 | 252215 | Shield, Heat Reflective (Tank) | 1 | |
| 21 | 249313 | Muffler, Exhaust Engine (Kohler CH730) | 1 | |
| 249741 | Muffler, Exhaust Engine (Kohler ECH730 - EFI) | 1 | ||
| 249314 | Muffler, Exhaust Engine (Subaru) (Prior to ME381002R) | 1 | ||
| 189477 | Gasket, Muffler (Kohler) | 2 | ||
| 261651 | Gasket, Muffler (Subaru) (Prior to ME381002R) | 2 | ||
| 209057 | Clamp, Muffler 1.625 Dia U Pld | 1 | ||
| 22 | Figure 1-2 | Generator Assembly | 1 | |
| CT1 | 246549 | Xfmr, Current Sensing | 1 | |
| 23 | 249255 | Mount, Vibration | 4 | |
| 24 | 249229 | Bracket, Mtg Base Generator | 1 | |
| 25 | 249226 | Bracket, Mtg Engine Kohler | 1 | |
| 249227 | Bracket, Mtg Engine Subaru (Prior to ME381002R) | 1 | ||
| 26 | 249228 | Bracket, Mtg Base Engine | 1 | |
| 27 | 249329 | Cover, Fuel Tank | 1 | |
| 28 | 249253 | Baffle, Engine | 1 | |
| 216641 | Seal, Engine Air Baffle (Subaru Engine Models) (Prior to ME381002R) | 1 | ||
| 29 | 227913 | Label, Warning Battery Explosion Can Blind | 1 | |
| 30 | †249254 | Base | 1 | |
| 31 | 227912 | Label, Warning Do Not Weld On Base/Fuel Level | 2 |
Figure 1-1 Main Assembly (Continued)
| Item No. | Dia. Mkgs. | Part No. | Description | Quantity |
|---|---|---|---|---|
| 32 | 211355 | Cover, Base (LP Model, 3 Qty) | 4 | |
| 250494 | Cover, Base LP | 1 | ||
| 33 | 246217 | Bracket, W/Components/Harness (Includes) | 1 | |
| 248219 | -Bracket, Mtg Components | 1 | ||
| 172731 | -Holder, Fuse Mintr .250 X 1.250 Clip Anti-pivot | 2 | ||
| 1T | 172661 | -Block, Stud Connection 6 Position | 1 | |
| 177136 | -Clamp, Capacitor 1.375 Dia | 1 | ||
| C1 | 218680 | -Capacitor, Elctlt 2000 uF 200 VDC Can 1.42 Dia | 1 | |
| SR2-SR3 | 035704 | -Rectifier, Integ Bridge 40. Amp 800V | 2 | |
| F1-F2 | *169296 | -Fuse, Mintr Gl 25. Amp 125 Volt | 2 | |
| D4 | 135184 | -Diode Board | 1 | |
| 173734 | Link, Jumper | 1 | ||
| 34 | 249305 | Engine, Gas Elec Start Kohler CH730 | 1 | |
| *215984 | Filter, Fuel In-line .250 Kohler CH730 | 1 | ||
| *230015 | Tune-up & Filter Kit, Kohler CH730 (Includes) | 1 | ||
| 230016 | -Air Filter Element, Kohler | 1 | ||
| 066698 | -Oil Filter, Kohler | 1 | ||
| 215985 | -Filter, Fuel w/Clamps & 1/4 in Fuel Line | 1 | ||
| 067007 | -Spark Plug | 2 | ||
| 230017 | -Air Filter Wrapper | 1 | ||
| *276379 | Switch, Oil Pressure (Kohler CH730) | 1 | ||
| *190249 | Regulator, Voltage (Kohler CH730) | 1 | ||
| 34 | 259991 | Engine, Gas Elec Start Kohler ECH730 - EFI | 1 | |
| 264859 | Sensor, Oxygen Kohler EFI | 1 | ||
| *246115 | Tune-up & Filter Kit, Kohler ECH730 - EFI (Includes) | 1 | ||
| 230016 | -Air Filter Element | 1 | ||
| 066698 | -Oil Filter | 1 | ||
| 246117 | -Filter, Fuel w/Clamps (Primary) | 1 | ||
| 246123 | -Filter, Fuel w/Clamps (Secondary) | 1 | ||
| 067007 | -Spark Plug | 2 | ||
| 230017 | -Air Filter Wrapper | 1 | ||
| *276395 | Switch, Oil Pressure (Kohler ECH730) | 1 | ||
| *244143 | Regulator, Voltage 25 Amp (Kohler ECH730) | 1 | ||
| TS1 | †199530 | Solenoid, Idle (Kohler) | 1 | |
| 34 | 249307 | Engine, Gas Elec Start (Subaru) (Prior to ME381002R) | 1 | |
| 237857 | Filter, Fuel In-line .250 Subaru (Prior to ME381002R) | 1 | ||
| 199062 | Tune-up & Filter Kit, Subaru (Includes) (Prior to ME381002R) | 1 | ||
| 198755 | -Element, Air Filter | 1 | ||
| 198754 | -Filter, Oil | 1 | ||
| 241408 | -Filter, Fuel w/Clamps | 1 | ||
| 198777 | -Spark Plug | 1 | ||
| *198756 | Fuel Pump (Subaru) | 1 | ||
| *198778 | Regulator (Subaru) | 1 | ||
| TS1 | †206573 | Solenoid, (Subaru) (Prior to ME381002R) | 1 | |
| 34 | 249309 | Engine, LP Gas Elec Start Kohler | 1 | |
| *190248 | Fuel Pump (Kohler) | 1 | ||
| F6 | *215621 | Fuse, 30 Amp Ato Type Subaru and Kohler CH730 | 1 | |
| F6 | *242712 | Fuse 15 Amp Automotive Blade Kohler ECH730-EFI | 1 | |
| F6 | *021718 | Fuse, Mintr Gl 30. Amp 32 Volt Kohler LP | 1 | |
| 35 | Battery, Stor 12V Gp 58 Maint Free | 1 |
Note: Gas tanks are EPA compliant starting 2012 week 10 (March 5, 2012). Contact Factory Service Department to ensure correct replacement parts are ordered.
EPA Fuel Tank Change Serial Number Information:
| Model and Engine | Stock Number | Effective Serial Number of EPA Fuel Tank Change |
|---|---|---|
| 250 Kohler GFCI | 907500 | MC100164R Thru MD491360R |
| 250 Subaru | 907501 | MC090993R Thru MD491360R |
| 250 EFI | 907502 | MC120705R Thru MD491360R |
| 250 Kohler | 907500001 | MC090826R Thru MD491360R |
| 250 Kohler Elec Fuel Pump | 907500002 | MC110496R Thru MD491360R |
| 250 Kohler No Battery | 907500003 | MC070779R Thru MD491360R |
| 250 Kohler Sunbelt | 907500004 | MC120668R Thru MD491360R |
†When ordering a component originally displaying a precautionary label, the label should also be ordered. Labels available separately or as part of label kit.
*Recommended Spare Parts
†Service Parts
To maintain the factory original performance of your equipment, use only Manufacturer's Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor.
Figure 1-2. Generator
This diagram illustrates the generator assembly, detailing components such as the generator cover, screws, stator, rotor, bearings, fan, and adapter. It provides part numbers and descriptions for each element of the generator unit.
| Item No. | Dia. Mkgs. | Part No. | Description | Quantity |
|---|---|---|---|---|
| 1 | 249240 | Cover, Generator | 1 | |
| 2 | 142156 | Screw, 375-16x1.75 Hexwhd.81d Gr8 Pld | 4 | |
| 3 | STATOR | †246402 | Generator Assy, Front (Kohler CH730 & Subaru) (Prior to MK350370R) | 1 |
| STATOR | †283605 | Generator Assy, Front (Kohler CH730 & Subaru) (Eff w/MK350370R) | 1 | |
| STATOR | †249613 | Generator Assy, Front (Kohler ECH730) (Prior to MK350370R) | 1 | |
| STATOR | †285337 | Generator Assy, Front (Kohler ECH730) (Eff w/MK350370R) | 1 | |
| 4 | 183419 | -O-Ring 1.984 Id X .139 cs 70 Duro Viton | 1 | |
| 5 | ROTOR | 249325 | Rotor, Generator (Includes) | 1 |
| 6 | 181143 | -Bearing, Ball Rdl Sgl Row .984 X 2.047 X .591 | 1 | |
| 7 | 181135 | -Ring, Collector Rotor | 1 | |
| 8 | 249259 | -Fan, Rotor Gen | 1 | |
| 9 | 249222 | Adapter, Engine | 1 | |
| 10 | 250871 | Baffle, Engine Adapter | 1 | |
| 11 | 249740 | Grommet, Engine Adapter | 1 | |
| 12 | 250336 | Screw, 43714x1.50 Hexwhd.93d Gr8 Pld | 4 | |
| 13 | 205725 | Brushholder Assy, Generator | 1 | |
| 14 | 136343 | Screw, K50x 20 Pan Hd-phl Stl Pld Pt Thread Forming | 2 | |
| 15 | 227724 | Label, Warning Moving Parts Can Cause Serious Etc (Bilingual) | 1 |
†When ordering a component originally displaying a precautionary label, the label should also be ordered. Labels available separately or as part of label kit.
To maintain the factory original performance of your equipment, use only Manufacturer's Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor.
Figure 1-3. Panel, Front w/Components
This diagram displays the front panel of the Bobcat 250, detailing its components including the nameplate, various switches (polarity, range, ignition), rheostat, circuit breakers, receptacles (GFCI, standard), gauges (fuel, hour meter, idle module), knobs, controls, levers, and bezels. It also lists associated wiring harness components.
| Item No. | Dia. Mkgs. | Part No. | Description | Quantity |
|---|---|---|---|---|
| 1 | 228202 | Nameplate (Order by Model and Serial No.) | 1 | |
| 2 | Panel, Front | 1 | ||
| 3 | S1 | 246498 | Switch, Polarity w/Leads & Jumpers | 1 |
| 4 | S3 | 246500 | Switch, Range w/Lead & Jumpers | 1 |
| 5 | R1 | 239168 | Rheostat, WW 150. W 50. Ohm Frict Term | 1 |
| 6 | S2 | 217680 | Switch, Ignition 4 Position W/Out Handle | 1 |
| 7 | CB2, CB3 | 093996 | Supplementary Pro, Man Reset 1p 20A 250VAC Frict | 2 |
| 8 | RC2, RC3 | 237722 | Rcpt, Str Dx Grd 2p3w 20A 125V *5-20r | 2 |
| RC2, RC3 | 280236 | Receptacle, GFCI 15/20A | 2 | |
| 9 | CB1 | 233039 | Supplementary Protector, Man Reset 2p 50A 240VAC | 1 |
| 10 | HM | 222121 | Gauge, Fuel Elec/Hour Meter/Idle Module (Prior to MJ090887R) | 1 |
| HM | 270454 | Gauge, Fuel Elec/Hour Meter/Idle Module (Eff w/MJ090887R) | 1 | |
| HM | 227598 | Gauge, Hour Meter/Idle Module (LP Engine) (Prior to MJ100003R) | 1 | |
| HM | 270455 | Gauge, Hour Meter/Idle Module (LP Engine) (Eff w/MJ100003R) | 1 | |
| 11 | 207077 | Knob, Pointer 1.625 Dia. Push On | 1 | |
| 12 | 249320 | Control, Push/Pull Snap-in 28.937 W/1.75 Ext Kohler | 1 | |
| 249322 | Control, Push/Pull Snap-in 31.437 w/1.75 Ext Subaru (Prior to ME381002R) | 1 | ||
| 110463 | Tubing Corrugated Plastic Slit .250 Dia Xcoil | 0.34 ft | ||
| 13 | 207073 | Lever, Ignition Switch | 1 | |
| 14 | RC1 | 182954 | Rcpt, Str 3p4w 50A 125/250V Flush Mtg *14-50 | 1 |
| 15 | 217346 | Bezel Assy (Includes) | 1 | |
| 211416 | -Bezel | 1 | ||
| 16 | 216776 | -Cover, Output Stud Electrode | 1 | |
| 17 | 213637 | -Cover, Output Stud | 1 | |
| 18 | 216773 | -Cover, Receptacle Duplex 120V | 1 | |
| 19 | 216774 | -Cover, Receptacle Full KVA 120/240V | 1 | |
| 20 | 216772 | -Cover, Output Stud Work | 1 | |
| 21 | 211405 | -Pin, Hinge | 1 | |
| 22 | 207074 | Handle, Switch | 2 | |
| 23 | GRD | 197203 | Grounding Stud Assy, Brass | 1 |
| 24 | ELECT, WORK | 241433 | Terminal, Pwr Output Black | 2 |
Wiring Harnesses
| Item No. | Dia. Mkgs. | Part No. | Description | Quantity |
|---|---|---|---|---|
| 246386 | Harness, Wrg Unit (Includes) | 1 | ||
| PLG8 | 177859 | -Conn, Body 5 Terminal | 1 | |
| RC4 | 116045 | -Conn, Rect Univ 084 6p/S 3row Rcpt Cable/Panel Lkg (Service Kit) | 1 | |
| PLG6 | 136810 | -Conn, Rect Univ 084 4p/S 1row Plug Cable Lkg (Service Kit) | 1 | |
| PLG12 | 214932 | -Conn, Rect Univ 039 8p/S 2row Plug Cable Lkg Seal | 1 | |
| PLG13 | 140523 | -Conn, Rect Comm 062 2p/S 1row Plug Cable Lkg | 1 |
Optional: To maintain the factory original performance of your equipment, use only Manufacturer's Suggested Replacement Parts. Model and serial number required when ordering parts from your local distributor.
Note: Some wiring harness components (switches, relays, circuit breakers) are also referenced elsewhere in this parts list. Purchase components separately or as part of the associated wiring harness.
Company Information
Miller Electric Mfg. LLC, An Illinois Tool Works Company, 1635 West Spencer Street, Appleton, WI 54914 USA. For international locations and more information, visit www.MillerWelds.com.
