Part of the John Deere Repair Manuals.
This 894-page John Deere X710/X730/X734/X738/X739 Technical Manual (OEM #TM142319) puts the full factory service program for these Select Series tractors in your hands, and it's the John Deere x738 technical manual pdf you actually want on the bench. Inside: wiring harness diagrams with connector pinouts, hydraulic system schematics, DTC troubleshooting charts, and Groups 10 through 60 covering everything from engine and power train repair to electrical diagnosis and tests. You get theory of operation writeups alongside the actual teardown procedures, so you're not just guessing why a circuit trips. Set rear axle ball bearing clearance to 0-0.38 mm and torque metric Grade 7 cap screws exactly per the chart, not a forum estimate. Stop swapping parts on a hunch. Bookmarked by group and searchable by keyword, so pull it up on a tablet in the shop and go straight to the section you need.
What's Inside This John Deere X710 to X739 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 8-39 | Safety, General Specifications, Fuel and Lubricants, Machine Specifications |
| Engine Repair | 40-137 | Engine, Cooling System, Fuel and Air System |
| Electrical Repair | 138-187 | Battery, Starting Motor and Alternator, Wiring Harnesses |
| Power Train Repair | 188-309 | Controls and Charge Pump, Transaxle, Differential, Hfwd, PTO Repair |
| Steering and Brake Repair | 310-339 | Steering, Brakes |
| Hydraulics Repair | 340-352 | Hydraulic Pump, Control Valve, Cylinders, Hoses and Fittings, Reservoir |
| Attachment Repair | 353-397 | Mower Deck, Blades, Spindles, Front Attachments, Drive Belts |
| Miscellaneous Repair | 398-422 | Wheels, Tires, Fenders, Frame, Fuel Tank, Fasteners |
| Operator’S Station Repair | 423-430 | Operator’s Station, Component Location |
| Engine Operation, Tests, and Adjustments | 431-489 | Engine Component Location, Theory of Operation, Diagnostic Tests, Adjustments, Specifications |
| Electrical System Operation, Tests, and Adjustments | 490-683 | Electrical Component Location, Theory of Operation, Diagnostic Tests, Adjustments, Specifications |
| Power Train Operation, Tests, and Adjustments | 684-740 | Power Train Component Location, Theory of Operation, Diagnostic Tests, Adjustments, Specifications |
| Steering and Brake Operation, Tests, and Adjustments | 741-798 | Steering & Brake Component Location, Theory of Operation, Diagnostic Tests, Adjustments, Specifications |
| Hydraulic System Operation, Tests, and Adjustments | 799-856 | Hydraulic Component Location, Theory of Operation, Diagnostic Tests, Adjustments, Specifications |
| Attachment Operation, Tests, and Adjustments | 857-891 | Attachment Component Location, Theory of Operation, Diagnostic Tests, Adjustments, Specifications |
| Service Tools and Kits | 892-894 | Service Tools, Dealer-Fabricated Tools, Test Kits |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Metric Cap Screw Torque Values-Grade 7 | 21 | p. 6 |
| Metric Bolt and Screw Torque Values | 22 | p. 6 |
| Rear Axle Ball Bearing Clearance | 0–0.38 mm (0–0.015 in.) | p. 207 |
| Rear Axle Pipe ID | 31 mm (1–3/16 in.) | p. 207 |
| RIO Switch Connector Terminal 1 Circuit Number | 500K (X710), 500E (X730, X734, X738, X739) | p. 616 |
| Engine Oil Capacity (with filter) | 1.8 L | p. 37 |
| Fuel Tank Capacity | 19.7 L | p. 37 |
| Battery | 12 Vdc 300 CCA | p. 37 |
| Engine Mounting Bolts Torque | 50 N·m | p. 42 |
| Flywheel Bolt Torque | 56 N·m | p. 42 |
| Cylinder Bore ID New | 78.00 mm | p. 42 |
John Deere X710 to X739 Series Common Problems This Manual Covers
John Deere X738 mower blades keep spinning when shifted into reverse, RIO switch not cutting power
Check the RIO switch connector wiring harness listed on page 616; verify continuity between terminal 1 (circuit 500E for X730, X734, X738, X739) and terminal 2 (circuit 754C). Test the switch with the tractor in reverse using a multimeter, and if it fails to open the circuit, replace the RIO switch immediately as a recall-related safety issue.
Manual Section: Electrical System Operation, Tests, and Adjustments p. 616Rear end whining noise that gets progressively louder as ground speed increases
Check the power train diagnosis section starting at page 684 for gear noise complaints. Remove the rear axle housing and measure ball bearing clearance; spec is 0-0.38 mm (0-0.015 in.) per page 207. Replace worn bearings or gears if clearance exceeds tolerance, and torque the transaxle mounting lock nuts to 71-106 N·m on reassembly.
Manual Section: Power Train Operation, Tests, and Adjustments p. 684Belt retainers at the PTO pulley keep falling off during normal mowing operation
Check the attachment diagnosis section starting at page 857 for loose retainer fasteners. Inspect the PTO belt retainer fasteners for missing lock washers or under-torqued bolts. Measure the drive belt tensioner spring; replace it if length falls below 310 mm (12.2 in.) per page 878, since a weak spring lets the belt walk and shakes retainers loose.
Manual Section: Attachment Operation, Tests, and Adjustments p. 857Excessive fuel consumption compared to other tractors in the same product lineup
Check the engine performance troubleshooting section starting for high fuel consumption causes. Verify low idle is set to 1600 rpm and high idle to 3550 rpm per page 457, since an idle set too high burns fuel at rest. Inspect the air filter element and carburetor jetting for a rich mixture.
Manual Section: Engine Operation, Tests, and AdjustmentsEngine won't start or cranks slowly in cold weather despite a fully charged battery
Check the engine starting troubleshooting procedures beginning for no-start and hard-start conditions. Test battery voltage and cold cranking amps against the 12 Vdc, 300 CCA spec on page 37; a battery reading low under load needs replacement. Pull a spark plug and check for wet fouling, then torque it to 25 N·m on reinstall per page 457.
Manual Section: Engine Operation, Tests, and AdjustmentsFrequently Asked Questions
What are the torque specifications for John Deere X730 blade bolts?
The torque specification for John Deere X730 blade bolts is 67.8 N·m (50 lb.-ft.). This torque is applied when securing the mower blade with the cupped washer and blade bolt, as detailed in the mower blade installation procedure. p. 363
How do I clear error code E10 on a John Deere X734?
To clear error codes on a John Deere X734, enter diagnostic mode by turning the key from OFF to RUN three times within three seconds, then hold the RIO switch and turn the key to the OFF position. For the E1010 (Fuel Solenoid Circuit Short to Power) code, specifically check the fuel solenoid/main relay, connections, and wiring. p. 635
What are the replacement specifications for the PTO Belt on a John Deere X730?
Specific replacement part numbers or dimensions for the PTO belt are not provided in the manual. However, the nominal length for a new drive belt tensioner spring is 370 mm (14.57 in.), and the minimum length is 310 mm (12.2 in.). p. 878
What are the torque specifications for the belt guide lock nuts on a John Deere X730?
The torque specification for the Belt Guide Lock Nut, which functions as a belt retainer, is 40 N·m (30 lb.-ft.). This torque is applied when securing the belt guide to captive bolts during installation. p. 386
Is this John Deere X710–X739 Series Technical Manual a digital download?
You get a 894-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print specific sections of this John Deere X710–X739 Series manual?
Zero restrictions. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Does this John Deere X710–X739 Series manual include hydraulic schematics?
Yes, this John Deere X710–X739 Series Technical Manual includes a hydraulic system diagram.
