Part of the John Deere Repair Manuals.
All 672 pages of this John Deere EZtrak Technical Manual (OEM #TM113119) are factory-written for the Z625, Z645, Z655, and Z665 residential mowers, covering both Briggs & Stratton and Kawasaki engine variants in one reference. Inside: full wiring schematics with connector pinouts, hydraulic circuit diagrams, a complete troubleshooting section with engine and electrical diagnosis trees, and torque tables spanning every major system. Exploded views and component locations break down both serial number ranges (S.N. -130000 and 130001-), so you're reading the right procedure for your exact machine. Set the ignition coil air gap to 0.20–0.30 mm on the B&S engine or 0.20–0.40 mm on Kawasaki-powered Z645, Z655, and Z665 units, then torque armature mounting screws to 3 N·m. No more hunting forum threads for a number your dealer won't give you. Bookmarked sections jump you straight to the right chapter; download once, search any spec, and get back to mowing.
What's Inside This John Deere Z625, Z645, Z655, Z665 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 7-45 | Safety Information, Signal Words, Safe Maintenance, Proper Tool Use, Fluid Handling, Fire Prevention |
| Engine Repair B&S | 46-135 | B&S Twin-Cylinder Engine Repair |
| Engine Repair Kawasaki | 136-224 | Engine Repair, Starting Motor Repair |
| Electrical Repair | 225-239 | Component Location, Wiring Harness |
| Power Train Repair | 240-306 | Component Location, Transmission Repair (by Serial Number) |
| Attachments Repair | 307-342 | Mower Deck & Lift Assembly, Deck Lift Control & Linkage, 48HC/54HC/60HC Decks, Deck Shields, Spindle |
| Miscellaneous Repair | 343-368 | Park Brake, Seat & Pan, Fuel Tank & Lines, Muffler & Heat Shield |
| Engine Diagnosis, Tests, and Adjustments B&S | 369-394 | B&S V-Twin Engine-Starting Diagnosis, Tests & Adjustments |
| Engine Diagnosis, Tests, and Adjustments Kawasaki | 395-454 | Component Location, Theory of Operation, Diagnosis, Tests & Adjustments |
| Electrical Diagnosis, Tests, and Adjustments | 455-613 | Theory of Operation, Diagnosis, Tests & Adjustments, Wiring Schematics, Connector Information |
| Power Train Diagnosis, Tests, and Adjustments | 614-655 | Theory of Operation, Diagnosis (by Serial Number) |
| Attachments Diagnosis, Tests, and Adjustments | 656-664 | Mower Blade Rotation, Mower Deck Vibration Diagnosis, Tests & Adjustments |
| Miscellaneous Tests and Adjustments | 665-668 | Park Brake Adjustment (by Serial Number), Park Brake Gap Check |
| Service Tools and Kits | 669-672 | Special Service Tools, Service Kits |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Mower Belt Tension Spring Length | 42–43 cm (16.5–16.9 in.) | p. 663 |
| Cylinder Head Distortion (Maximum) Out-of-Flat | 0.05 mm (0.002 in.) | p. 138 |
| Z625 (Briggs & Stratton engine) | ||
| Ignition Coil Air Gap | 0.20–0.30 mm (0.008–0.012 in.) | p. 43 |
| Armature Mounting Screws Torque | 3 N·m (25 lb.-in.) | p. 389 |
| Spark Plug Torque (Z625 (Briggs & Stratton engine)) | 20 N·m (180 lb.-in.) | p. 48 |
| Spark Plug Gap | 0.76 mm (0.030 in.) | p. 49 |
| Briggs & Stratton engines | ||
| Engine Crankcase Capacity (with Filter) | 1.9 L (2.0 qt.) | p. 38 |
| Valve Spring Free Length (minimum) | 33.50 mm (1.319 in.) | p. 49 |
| Z625 (SN. 170001-) | ||
| Spark Plug Torque, Z625 (SN. 170001-) | 20 N·m (180 lb.-in.) | p. 43 |
| Kawasaki engines | ||
| Spark Plug Torque, Kawasaki engines | 22 N·m (195 lb.-in.) | p. 41 |
| Z645, Z655, Z665 (SN. -130000) | ||
| Hydraulic System Oil Capacity (Includes Reservoir) | 6.1 L (1.65 gal.) | p. 38 |
| Z645, Z655, Z665 (SN. 130001-) | ||
| Transaxle Oil Capacity (approximate) | 1550-1650 ml (53.4-55.8 oz.) | p. 40 |
