Part of the John Deere Repair Manuals.
Hunting for a John Deere 250G technical manual PDF? This 174-page factory technical manual (OEM #TM1791) covers the whole generator family: 250G, 440G, 550GE, G2500K, G4400K, G5500K, and G5500KE. You get factory electrical schematics with circuit-by-circuit wire tracing, rotor and stator resistance tests, GFCI checks, and a full troubleshooting section for no-start, idle-control, and no-voltage conditions. Exploded views of the generator end, control panels, and recoil starter back up page after page of step-by-step procedures, from carburetor rebuilds to crankshaft end play adjustment. Torque the flywheel nut to 88 N-m (65 lb-ft) and pull the cylinder head cap screws down to 18.7 N-m before you button up the engine. No more chasing wiring faults with a multimeter and a prayer. Bookmarked with a live text layer: search any spec, jump straight to the test you need, and get your generator back online.
What's Inside This John Deere 250G, 440G, 550GE, G2500K, G4400K, G5500K, G5500KE Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction and Safety | 3-6 | Recognize Safety Information, Prevent Acid Burns, Handle Fuel Safely, Service Generators Safely, Operating Precautions |
| General Specifications and Service Data | 9-25 | Model Specifications for 250G, 440G, 550GE, G2500K, G4400K, G5500K and G5500KE, Break-In and Service Oils, Fuel Type and Capacities, Metric and Inch Fastener Torque Values |
| Engine Troubleshooting, Tests and Adjustments | 26-29 | Engine Will Not Start or Runs Rough, Idle Control Faults, Slow and Fast Idle Adjustment, Engine Under Load Symptoms |
| Engine Repair - Briggs & Stratton 5 Hp and 8 Hp | 30-78 | Carburetor Removal, Disassembly and Installation, Muffler, Cylinder Head Inspection, Valve Guide Rebush and Seat Reconditioning, Valve Lapping, Governor Lever and Bushing, Piston and Connecting Rod Service, Piston Rings, Crankshaft End Play, Cylinder Deglazing and Rebore, Main Journal Rebush, Recoil Starter |
| Engine - Kawasaki FE170 (5.3 Hp) | 79-100 | FE170D Specifications, Valve Clearance Check, Automatic Compression Release Test, Ignition Coil Air Gap, Flywheel and Cylinder Head Service, Valve and Seat Reconditioning, Crankcase Cover, Tappets, Piston and Rod Service, Crankshaft and Cylinder Block Inspection |
| Engine - Kawasaki FE250/FE350 (8 Hp and 11 Hp) | 101-138 | FE250/FE350 Specifications and Repair Limits, Valve Clearance (G4400K), Ignition Coil Air Gap, Carburetor Service, Rocker Arm Inspection, Cylinder Head Service, Camshaft Removal and Inspection, Reciprocating Balancer, Crankshaft Removal and End Play, PTO Oil Seal, Oil Filter Manifold |
| Electrical System - Schematics and Diagnostics | 141-146 | Reading Electrical Schematics, Theory of Operation, Common Circuit Tests (Short, Open, High Resistance, Ground), Component Location |
| Generator End and Control Panel | 147-152 | End Bell, Stator and Harness, Rotor and Brush Head (250G/G2500K and 440G/G4400K/550GE/G5500K/G5500KE), Receptacles, Switches, Control Board, Circuit Breaker, Full Electrical Schematics |
| Electrical Troubleshooting and Tests | 153-162 | Voltage at Receptacles, Generator Tester Procedure, Rotor and Stator Resistance, Idle-Start Switch Test, Electromagnet Adjustment, Gfci Checks, Engine Oil Switch Test, Diode Test |
| Generator Repair and Assembly | 163-174 | Generator Disassembly and Reassembly Methods, Generator Tester Use, Field Flashing, Control Panel Removal and Wiring Connections |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 250G, G2500K | ||
| Engine (250G, G2500K) | Briggs & Stratton 133412, 5 hp @ 3250 rpm, 206 cc | p. 23 |
| Engine oil capacity - 5 hp | 0.62 L (21 U.S. oz.) | p. 23 |
| 440G, 550GE | ||
| Engine (440G, 550GE) | Briggs & Stratton 196412, 8 hp @ 3250 rpm, 319 cc | p. 51 |
| Engine oil capacity - 8 hp | 1.42 L (48 U.S. oz.) | p. 51 |
| Kawasaki-powered units | ||
| Engine (Kawasaki option) | Kawasaki FE170D, 3.95 kW (5.3 hp) @ 3600 rpm | p. 81 |
| G4400K, G5500K, G5500KE | ||
| Engine oil capacity - FE250/FE350 | 1.4 L (3.0 pt.) | p. 103 |
| Spark plug torque - Kawasaki | 25 N•m (221 lb-in.) | p. 83 |
| 250G, 440G, 550GE, G2500K | ||
| Spark plug torque - Briggs & Stratton | 20 N•m (180 lb-in.) | p. 24 |
| Briggs & Stratton engines | ||
| Cylinder head cap screw torque | 18.7 N•m (165 lb-in.) | p. 54 |
| Flywheel nut torque | 88 N•m (65 lb-ft) | p. 54 |
| Valve clearance - intake | 0.13-0.18 mm (0.005-0.007 in.) | p. 24 |
| All Models | ||
| End bell to engine torque | 13.6-16.9 N•m (120-150 lb-in.) | p. 13 |
| Fuel type | Unleaded gasoline, 87 octane | p. 23 |
John Deere 250G, 440G, 550GE, G2500K, G4400K, G5500K, G5500KE Common Problems This Manual Covers
John Deere 440G generator starts, runs about ten seconds, then dies with low oil light flashing
Check the oil level first; the 440G crankcase holds 1.42 L (48 U.S. oz.), and the low oil switch kills ignition well before the dipstick reads empty. If the level is correct, test the oil switch for continuity per page 161 with the float moved through its travel, and replace a switch that stays closed.
Manual Section: Engine Oil Switch Test p. 161Engine cranks strong but will not fire, or starts only after long cranking
Verify the fuel valve is open and the tank has fresh unleaded 87 octane gasoline; stale or watered fuel is the usual culprit. Drain the tank and carburetor bowl, refill, and work through the engine no-start chart starting on page 26. Pull the spark plug and check for fouling while you are in there.
Manual Section: Troubleshooting p. 26No voltage at either receptacle while the engine runs at full speed
Check the main breaker and press the GFCI reset first. Work through the electrical troubleshooting steps on page 153, then measure rotor and stator resistance per page 155. If residual magnetism is lost, flash the field (page 167). After brush work on a 250G, torque the end bell to 13.6 to 16.9 N•m (120 to 150 lb-in.).
Manual Section: Electrical Troubleshooting p. 153Engine runs but bogs down and lacks power when load is applied
Remove and inspect the air cleaner elements; a plugged filter starves these engines fast in dusty conditions. Drain any stale fuel and refill with fresh 87 octane unleaded. If power is still down, run a cylinder compression test and check valve clearance per page 29; intake clearance on the 250G should be 0.13 to 0.18 mm (0.005 to 0.007 in.).
Manual Section: Tests and Adjustments p. 29Excessive vibration at full speed, gets worse as the unit warms up
Tighten all engine and generator mounting hardware first; loose isolators cause most vibration complaints. Pull the blower housing and check the flywheel key and nut; removal is covered on page 30. If vibration persists, measure crankshaft end play with a dial indicator per page 46; the 250G spec is 0.05 to 0.30 mm (0.002 to 0.008 in.).
Manual Section: Crankshaft End Play Measurement p. 46Frequently Asked Questions
What are the torque specifications for the cylinder head cap screws on the John Deere 550GE generator?
For the John Deere 550GE generator, which uses an 11 HP Briggs & Stratton engine, the cylinder head cap screw should be torqued to 18.7 N•m (165 lb-in.). This specification is found in the repair specifications for 8 HP and 11 HP engines. p. 54
What is the spark plug torque specification for the John Deere 250G generator?
The spark plug for the John Deere 250G generator should be torqued to 20 N•m (180 lb-in.). This specification is listed under the torque specifications for the 5 HP Briggs & Stratton engine. p. 24
What is the fuel capacity of the John Deere 250G generator?
The John Deere 250G generator has a fuel capacity of 3 Gallons (11 Liters). This information is provided in the general specifications for the 250G generator under the fuel system details. p. 9
What is the intake valve clearance for the John Deere 250G generator?
The intake valve clearance for the John Deere 250G generator should be between 0.13 - 0.18 mm (0.005 - 0.007 in.). This specification is crucial and is listed under the valve clearance section for the 5 HP engine. p. 24
What is the armature air gap specification for the John Deere 250G generator?
The armature air gap for the John Deere 250G generator should be set between 0.25 - 0.36 mm (0.010 - 0.014 in.). This electrical specification is important for proper ignition and is found in the electrical specifications for the 5 HP engine. p. 23
What do I get after purchasing this John Deere 250G & variants manual?
Instant PDF download. You get the full 174-page searchable Technical Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Am I able to print pages from this manual?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
