Part of the John Deere Repair Manuals.
Need the factory data for your John Deere Z910A? This 716-page ZTrak™ Mower Technical Manual (OEM #TM109119) covers the full Z-series lineup: Z910A, Z920A, Z925A, Z925A EFI, Z930A, Z950A, Z960A, and Z970A. Inside you'll find wiring schematics broken out by harness configuration (standard, EFI-only, and convenience package), hydraulic schematics for the power train, and a full engine diagnostic section for both Kawasaki and Kohler EFI powerplants. You also get engine diagnostic test codes, a complete troubleshooting section for electrical and drivetrain faults, and page after page of torque specifications through the repair sections. Replace your primary air cleaner element every 250 hours; torque the rear mower deck hanger jam nut to 67 N·m (50 lb.-ft.) when reinstalling the deck. Your machine is down. Bookmarked and keyword-searchable, this PDF opens on any device so you can pull up the exact spec before you reach for a wrench.
What's Inside This John Deere Z910–Z970 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 5-28 | Safety, Fuel and Lubricant, Machine Specifications |
| Engine Repair, Kawasaki | 29-197 | Repair FX651V and FX730V, Repair FX751V, FX801V, And FX850V, Repair FX921V and FX1000V |
| Engine Repair, Kohler Efi | 198-278 | Repair |
| Electrical Repair | 279-322 | Component Location, Wire Harness, Standard, Efi Only, Convenience Package |
| Power Train Repair | 323-362 | Component Location, Repair |
| Attachments Repair | 363-404 | Component Location, Repair |
| Miscellaneous Repair | 405-431 | Wheels, Operators Station, Roll Over Protective Structure, Miscellaneous |
| Engine Diagnosis, Tests, and Adjustments, Kawasaki | 432-500 | Component Location, Theory of Operation, Diagnosis, Tests and Adjustments |
| Engine Diagnosis, Tests, and Adjustments, Kohler | 501-525 | Theory of Operation, Diagnosis, Tests and Adjustments |
| Electrical Diagnosis, Tests, and Adjustments | 526-634 | Theory of Operation, Diagnosis, Engine Diagnostic Test Codes, Tests and Adjustments, Wiring Schematics |
| Power Train Diagnosis, Tests, and Adjustments | 635-660 | Transaxle Operation, Brake System Operation, Diagnose System Fails to Build Pressure, Diagnose Machine Will Not Drive Straight, Bleed Hydrostatic System, Adjust Tracking and Speed |
| Attachments Diagnosis, Tests, and Adjustments | 661 | Mulch on Demand (M.O.D.) Operation, PTO Clutch Operation, Diagnose Mower System, Adjust Mower Deck Cutting Height, Check and Adjust PTO Air Gap, Break-In PTO Clutch |
| Service Tools and Kits | 4 | Barbed Fitting, Battery Charger, Compression Gauge, Digital Pulse Tachometer, Fuel Pressure Kit, Lapping Tool |
| Section 10 | 5-28 | Safety, General Specifications |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Rear Mower Deck Hanger Jam Nut Torque | 67 N·m (50 lb.-ft.) | p. 688 |
| Oil Filter Nipple Torque | 28.5 N·m (21 lb.-ft.) | p. 217 |
| Traction Drive Belt Replacement Condition | if not in good condition, not broken, worn, frayed, glazed, or stretched | p. 641 |
| Crankshaft Total Indicated Runout | 0.05 mm | p. 33 |
| Cylinder Head Cap Screw Torque | 46 N·m | p. 34 |
| Carburetor Float Height | Parallel with carburetor body | p. 32 |
| Ignition Coil Air Gap | 0.2-0.4 mm | p. 477 |
| Z910A, Z920A, Z925A, Z930A, Z950A, Z960A, Z970A | ||
| Primary Air Cleaner Element Replacement Interval | every 250 hours | p. 45 |
| FX651V, FX730V | ||
| Engine Cylinder Compression | 390 kPa | p. 477 |
| FX751V, FX801V, FX850V, FX921V, FX1000V | ||
| Engine Cylinder Compression | 440 kPa | p. 477 |
| FX651V, FX730V, FX751V, FX801V, FX850V | ||
| Engine Oil Pressure | 294-588 kPa | p. 477 |
| FX921V, FX1000V | ||
| Engine Oil Pressure | 294-490 kPa | p. 477 |
John Deere Z910–Z970 Series Common Problems This Manual Covers
John Deere Z910A drive pulley flange degrades over time, traction belt slips or breaks. p. 641
Inspect the traction drive belt condition as outlined on page 641. Replace the belt if it is broken, worn, frayed, glazed, or stretched. Check the drive pulley flange for heavy wear before installation. Mount the rear wheels and torque the nuts to 100 N·m.
Manual Section: Power Train Driving IssuesMower deck will not run when engaged and PTO clutch slips or vibrates aggressively. p. 584
Test the clutch circuit using a digital multimeter at the connector. Check page 584 and measure the PTO clutch resistance; it must read exactly between 1.2-1.6 ohms. If the coil is out of specification, replace the clutch assembly entirely. Verify all electrical connections are secure and free of corrosion.
Manual Section: PTO Clutch DiagnosisKawasaki engine cranks but will not start, runs erratically, or dies shortly after running.
Examine the fuel system and verify the primary air cleaner element replacement interval of every 250 hours has not been exceeded, as noted on page 45. Check the fuel lines and ensure the tank has up to its 44.48 L capacity of fresh fuel. Clean the spark plugs.
Manual Section: Kawasaki Engine Starting and Running IssuesMower deck cuts unevenly, vibrates excessively, or leaves a stepped appearance across the grass. p. 688
Adjust the deck leveling hardware and verify the rear mower deck hanger jam nut torque is set to 67 N·m (50 lb.-ft.) as detailed on page 688. Inspect all cutting elements for damage and tighten the mower blade screws to 122 N·m on page 381.
Manual Section: Mower Deck Operation IssuesFrequently Asked Questions
How to reset error codes on John Deere Z925A EFI?
To reset the ECM, turn the key switch to the OFF position. Install a jumper connector with a red wire into the engine harness service port connector, or a jumper wire between the white wire terminal (C) and black wire terminal (D). Turn the key switch to the RUN position, then OFF, and wait ten seconds. Repeat this step once more. The ECM is now reset.
What are the torque specs for drive belt pulley on John Deere Z970A?
The torque specification for the Spindle Sheave Nut, which is part of the drive belt pulley assembly, is 255 N·m (188 lb.-ft.). This value is found in the specifications for attachments repair.
How to reset the engine control module on John Deere Z960A?
To reset the ECM, turn the key switch to the OFF position. Install a jumper connector with a red wire into the engine harness service port connector, or a jumper wire between the white wire terminal (C) and black wire terminal (D). Turn the key switch to the RUN position, then OFF, and wait ten seconds. Repeat this step once more. The ECM is now reset.
How do you fix john Deere Z910A drive pulley flange degrades over time, traction belt slips or breaks?
Inspect the traction drive belt condition as outlined on page 641. Replace the belt if it is broken, worn, frayed, glazed, or stretched. Check the drive pulley flange for heavy wear before installation. Mount the rear wheels and torque the nuts to 100 N·m.
Is this John Deere Z910–Z970 Series Technical Manual a digital download?
This is a 716-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Are there any print restrictions on this John Deere Z910–Z970 Series manual?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Does this John Deere Z910–Z970 Series manual include hydraulic schematics?
Yes, a hydraulic system diagram is included showing the main circuit layout.
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