Processes
Stick (SMAW), flux-cored (FCAW), MIG (GMAW), DC TIG (GTAW), and optional Spectrum plasma paths; air carbon arc is listed for the 250 platform.
Miller Stick / Engine-Drive Support
Miller Bobcat 250 EFI Machine Support
Discontinued Miller Bobcat 250 EFI historical support for EFI engine-drive welding, auxiliary power, and the Miller accessories listed in literature ED/4.4.
Stick / TIG (SMAW / GTAW)MIG / FCAW paths12,000 W peak generatorEFI gas engine
Representative catalog image shown.
Welding range
AC and DC Stick/TIG: 40 - 250 A. MIG/FCAW: 17 - 28 V.
Generator
120/240 VAC generator. 12,000 W peak and 10,500 W continuous.
Engine
Kohler ECH730, 23 hp gasoline EFI at 3,600 rpm.
Size and weight
The supplied sheet lists the same general 250 dimensions: H 28 in. / 32.75 in. to exhaust, W 20 in., D 40.5 in.
Support status
Discontinued historical machine. Use this page for document-backed data and replacement-accessory research.
Stock Packages
| Stock number | Catalog package |
|---|---|
| 907502 | Base model with Kohler EFI engine |
Start with the common replacement paths
These are the quickest routes for historical Bobcat support. Every listed relationship comes from Miller literature ED/4.4; Amazon buttons are either approved links or clearly labeled searches.
Field options and service
Open the field options and service path for Bobcat 250 EFI.
Running gear, cages, and covers
Open the running gear, cages, and covers path for Bobcat 250 EFI.
Welding and feeder paths
Open the welding and feeder paths path for Bobcat 250 EFI.
TIG and controls
Open the tig and controls path for Bobcat 250 EFI.
Trailers and jobsite
Open the trailers and jobsite path for Bobcat 250 EFI.
Search a stock number
Open the search a stock number path for Bobcat 250 EFI.
Field Options and Service
Miller lists these field options and engine service kits for the Bobcat 250 EFI. Installation may be required; verify engine, fuel configuration, and serial-specific fitment before ordering.
| Part / stock | Item | Catalog note | Buy / lookup |
|---|---|---|---|
| 300975 | GFCI Receptacles Field option |
Field kit with two GFCI 120 VAC duplex receptacles. | Search Amazon Site lookup |
| 300976 | Electric Fuel Pump Field option |
For gas models at high altitude; improves engine starting and high-output performance. | Search Amazon Site lookup |
| 300924 | Spark Arrestor Field option |
Required in some California grassland, brush, forest, and National Forest applications. Check local rules. | Search Amazon Site lookup |
| 300923 | Remote Oil Drain and Filter Kit Service option |
Front-mount kit for the Kohler engine to simplify service when the machine is mounted in tight spaces. | Search Amazon Site lookup |
| 300517 | Adapter Cord, Full KVA Power accessory |
NEMA 14-50P to NEMA 6-50R adapter for common Millermatic and Spectrum 240 V plugs. | View on Amazon Site lookup |
| 119172 | Full KVA Plug Kit Power accessory |
120/240 VAC, 50 A NEMA 14-50P plug for the full KVA receptacle. | View on Amazon Site lookup |
| 246115 | Engine Tune-Up Kit Service part |
Kohler ECH730 EFI gas kit. Miller says to order engine tune-up kits through Miller Service Parts. | Search Amazon Site lookup |
Running Gear, Cages, and Covers
These running gear, cage, cylinder-mounting, and protective-cover accessories are listed for the Bobcat 250 EFI. The catalog fitment notes shown in each row matter.
| Part / stock | Item | Catalog note | Buy / lookup |
|---|---|---|---|
| 300909 | Off-Road Running Gear Running gear |
Gas/LP models with inner tubes. Includes four heavy-duty 15-inch tires and a rugged handle. | Search Amazon Site lookup |
| 300910 | Off-Road Running Gear Running gear |
Gas/LP models with Never Flat tires. Includes four heavy-duty 15-inch tires and a rugged handle. | Search Amazon Site lookup |
| 300912 | Off-Road Running Gear with Protective Cage Running gear and cage |
Gas/LP models with Never Flat tires and a rugged protective cage with cable holders. | Search Amazon Site lookup |
| 300913 | Multi-Terrain Running Gear Running gear |
Gas/LP models with inner tubes. Includes two 15-inch tires, two 8-inch swivel casters, and a heavy-duty handle. | Search Amazon Site lookup |
| 300914 | Multi-Terrain Running Gear Running gear |
Gas/LP models with Never Flat tires. Includes two 15-inch tires, two 8-inch swivel casters, and a heavy-duty handle. | Search Amazon Site lookup |
| 300921 | Protective Cage with Cable Holders Protective cage |
Gas/LP models. Can be used with running gear, gas cylinder mounting assembly, LP tank mounting assembly, or trailer. | Search Amazon Site lookup |
| 300918 | Gas Cylinder Mounting Assembly Gas-only accessory |
Gas models. Not for use with the LP Tank Mounting Assembly; not recommended with the protective cover. | Search Amazon Site lookup |
| 300919 | Protective Cover Machine cover |
For gas models without a protective cage or running gear. | Search Amazon Site lookup |
| 300920 | Protective Cover Machine cover |
For gas models with a protective cage and/or running gear. | Search Amazon Site lookup |
Welding, Feeder, Spool Gun, and Plasma Paths
Miller lists these MIG, flux-cored, stick-lead, wire-feeder, spool-gun, multiprocess, and plasma paths for use with the Bobcat engine-drive platform.
| Part / stock | Item | Catalog note | Buy / lookup |
|---|---|---|---|
| 173851 | 2/0 Stick Weld Leads, 50 ft. Stick welding leads |
350 A, 100% duty cycle; 50-foot stinger and 50-foot work cable. | Search Amazon Site lookup |
| 043952 | 2/0 Stick Weld Leads, 100/50 ft. Stick welding leads |
300 A, 100% duty cycle; 100-foot stinger and 50-foot work cable. | Search Amazon Site lookup |
| 907529 | Spectrum 375 X-TREME Plasma cutting path |
Optional Spectrum plasma cutter listed in the supplied Bobcat literature. | Search Amazon Site lookup Plasma support |
| 907579 | Spectrum 625 X-TREME Plasma cutting path |
Optional Spectrum plasma cutter listed in the supplied Bobcat literature. | Search Amazon Site lookup Plasma support |
| 907583 | Spectrum 875 Plasma cutting path |
Optional Spectrum plasma cutter listed in the supplied Bobcat literature. | Search Amazon Site lookup Plasma support |
| 907335 | Millermatic 140 Auto-Set MIG welder path |
Complete MIG package listed for operation from generator power. The current support path is the Millermatic 142 replacement page. | Search Amazon Site lookup 142 support |
| 907312 | Millermatic 180 Auto-Set MIG welder path |
Complete MIG package listed for operation from generator power. | Search Amazon Site lookup MIG support |
| 907422 | Millermatic 211 Auto-Set with MVP MIG welder path |
Complete MIG package listed for operation from generator power. | Search Amazon Site lookup 211 support |
| 907405 | Millermatic 212 Auto-Set MIG welder path |
Complete MIG package listed for operation from generator power. | Search Amazon Site lookup MIG support |
| 951583 | SuitCase X-TREME 8VS Wire Feeder Wire feeder path |
Voltage-sensing feeder with secondary contactor, MIG gun, gas valve, and drive roll kit. | Search Amazon Site lookup Feeder support |
| 951543 | SuitCase X-TREME 12VS Wire Feeder Wire feeder path |
Voltage-sensing feeder with secondary contactor, MIG gun, gas valve, and drive roll kit. | Search Amazon Site lookup Feeder support |
| 130831 | Spoolmatic 30A Spool Gun MIG / aluminum spool gun |
Air-cooled, 200 A, 1-pound spool gun for aluminum MIG. Requires WC-115A Control. | Search Amazon Site lookup Spool gun support |
| 137546-01-1 | WC-115A Control Spool-gun control |
With contactor; required for the Spoolmatic 30A path. | Search Amazon Site lookup Spool gun support |
| 195016 | Spoolmate 3035 Spool Gun MIG / aluminum spool gun |
For use with SGA 100C Control and Heavy-Duty Barrel; 150 A, 60% duty cycle with 20-foot cable. | Search Amazon Site lookup Spool gun support |
| 043857 | SGA 100C Control Spool-gun control |
With contactor; required to connect Spoolmate 3035 to a CV engine drive. | Search Amazon Site lookup Spool gun support |
| 195375 | Heavy-Duty Barrel for Spoolmate 3035 Spool-gun accessory |
For demanding applications; rated 200 A, 60% duty cycle. | Search Amazon Site lookup |
| 907518 | Multimatic 200 Multiprocess welder path |
Portable all-in-one MIG, TIG, and Stick package listed in the accessory guide. | Search Amazon Site lookup |
TIG and High-Frequency Controls
The literature points to the Dynasty 200 Series for portable AC/DC TIG and the HF-251D-1 path for high-frequency starting. No current support page or exact machine-specific fitment is assumed where the catalog does not provide one.
| Part / stock | Item | Catalog note | Buy / lookup |
|---|---|---|---|
| See catalog | Dynasty 200 Series TIG welder path |
Premium portable AC/DC TIG path named in the document. | Search Amazon Site lookup |
| 042388 | HF-251D-1 High-frequency arc starter |
115 VAC high-frequency arc starter and stabilizer. Requires the Secondary Contactor. | Search Amazon Site lookup |
| 041969 | Secondary Contactor Control accessory |
Required to use HF-251D-1. | Search Amazon Site lookup |
Trailers and Jobsite Accessories
Miller lists these trailer accessories for the Bobcat engine-drive platform. Verify hitch, trailer capacity, and local requirements before ordering.
| Part / stock | Item | Catalog note | Buy / lookup |
|---|---|---|---|
| 195013 | HWY-1000 Trailer Trailer |
1,000-pound-capacity highway trailer with welded frame, axle, jack stand, 2-inch ball hitch, fenders, and lights. | Search Amazon Site lookup |
| 195023 | Cable Tree Trailer accessory |
Provides a place to wrap weld cables and extension cords on the HWY-1000 trailer. | Search Amazon Site lookup |
| 300831 | Dual Hitch Hitch accessory |
2-inch ball hitch and 3-inch lunette eye in one reversible assembly. | Search Amazon Site lookup |
Catalog Source and Ordering Note
Source: Miller Bobcat 225 and 250 literature ED/4.4, issued January 2014. This page keeps machine data and catalog-listed accessory relationships together for historical support. Confirm model, fuel system, serial number, installation requirements, package contents, and current availability before ordering.
Full machine details
Document-backed specifications
- Bobcat 250 EFI uses the 250 weld output ranges in the supplied literature.
- EFI generator output: 12,000 W peak and 10,500 W continuous.
- EFI is listed with faster starts, lower emissions, and improved fuel efficiency compared with carbureted models.
- 12-gallon fuel capacity; DC TIG is available above 80 A.
- Historical literature does not establish serial-specific replacement compatibility. Verify model and serial number before ordering.
Generator and service notes
- 12-gallon fuel capacity.
- Typical 1/8-inch 7018 use is about 20 hours of gas operation at 125 A and 20% duty cycle.
- About 14 hours of gas operation under a continuous 4,000 W generator load.
- LP operation can derate output by up to 5%.
Ordering caution
These machines are discontinued. The page is a reference and lookup aid, not a confirmation of current stock or universal compatibility.
Source: Miller Bobcat 225 and 250 literature ED/4.4, issued January 2014. Specs and accessory relationships are based on the supplied document; confirm serial-specific fitment and current availability before ordering.
Approved Buy Links
Previously verified accessory links
Adapter Cord, Full KVAPart: 300517
View on AmazonFull KVA Plug KitPart: 119172
View on Amazon