Part of the Kubota Repair Manuals.
This Kubota Service Manual covers the T1570A, T1670A, T1770A, and T1870A lawn and garden tractors, spanning the GH430V, GH570V, and GH630V Kubota engines plus the Kohler CV17 and CV19 used across the range. It is a 378 page PDF with a searchable text layer that you download and keep.The book is split into clear sections: a general chapter on identification, maintenance intervals, and torque values, two engine sections, the hydrostatic transaxle, brakes, front axle, steering, fender and lift, PTO, two electrical sections with wiring diagrams, the mower deck, and a full engine body teardown.Independent mechanics and owners use it to chase no-start faults, service the transaxle, adjust steering and brakes, engage a balky PTO, and set the deck for a level cut, all to Kubota's published figures.
What's Inside This Kubota T1570–T1870 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 11-44 | Features, Identification (Machine, Engine, Mower), Handling Precautions for Electrical Parts and Wiring (Battery, Fuse, Connector, Handling of Circuit Tester), Fuel and Lubricants |
| Sect 1 Engine 1 | 45-96 | Disassembling and Servicing (Disassembling and Assembling, Engine Body, Lubricating System, Fuel System, Checking and Adjusting, High Altitude Kit) |
| Sect 2 Engine 2 | 97-110 | Engine Body, Lubricating System, Ignition System, Separating Engine |
| Sect 3 Transaxle | 111-134 | Hydrostatic Transaxle, Hydrostatic Transmission, Disassembling and Servicing (T1670A, T1770A and T1870A)(T1570A: Refer to WSM T1460, T1560 (97897-11741)), Separating Hydrostatic Transaxle, Disassembling Hydrostatic Transaxle, Assembling Hydrostatic Transaxle |
| Sect 4 Brakes | 135-142 | Disassembling and Servicing (Checking and Adjusting, Disassembling and Assembling) |
| Sect 5 Front Axle | 143-150 | Disassembling and Servicing (Checking and Adjusting, Disassembling and Assembling, Separating Front Axle Assembly, Disassembling Front Axle) |
| Sect 6 Steering | 151-158 | Steering Wheel, Battery, PTO Clutch Lever, Parking Lock Pedal, Throttle Cable, Fender, Steering Support, Steering Shaft |
| Sect 7 Fender and Lift | 159-170 | Disassembling and Servicing (Checking and Adjusting, Disassembling and Assembling, Separating Fender, Lift Linkage, Lift Lever) |
| Sect 8 PTO | 171-178 | Disassembling and Servicing (Checking and Adjusting, Disassembling and Assembling) |
| Sect 9 Electrical 1 | 179-212 | Wiring Diagram (Color of Wiring), Kra System |
| Sect 10 Electrical 2 | 213-240 | Wiring Diagram (Color of Wiring), Kra System |
| Sect 11 Mower | 241-254 | Disassembling and Servicing (Checking and Adjusting, Disassembling and Assembling) |
| Sect P Engine Body | 255-378 | Safety and General Information, Air Cleaner and Air Intake System, Fuel System and Governor, Lubrication System, Electrical System and Components, Disassembly, Reconditioning |
Every system also includes tightening torques, troubleshooting, checking, and servicing specifications.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| T1570A | ||
| Fuel Tank Capacity | 11.0 L (2.9 U.S.gals., 2.4 Imp.gals.) | p. 7 |
| Hydrostatic Transmission Case Capacity | 2.3 L | p. 7 |
| T1670A, T1770A, T1870A | ||
| Fuel Tank Capacity | 15.0 L (3.9 U.S.gals., 3.3 Imp.gals.) | p. 7 |
| All Models | ||
| Engine Crankcase Capacity | 1.9 L | p. 7 |
| Front Tire Pressure (cold) | 100 kPa | p. 28 |
| Rear Tire Pressure (cold) | 70 kPa | p. 28 |
| Engine Oil Change Interval | 100 hours | p. 261 |
| Spark Plug Gap (Engine 1) | 1.02 mm | p. 53 |
| Spark Plug Torque (Engine 1) | 38.0 to 43.4 N·m | p. 54 |
| PTO Tension Spring Length | 69 to 72 mm | p. 174 |
| Blade Screw Torque | 102.9 to 117.6 N·m | p. 246 |
| Steering Wheel Play | 20 to 30 mm | p. 154 |
Kubota T1570–T1870 Series Common Problems This Manual Covers
Hard starting or rough running
Fouled plugs, a weak carburetor, or worn valves make these single and V-twin engines hard to start. Sect 1 Engine 1 covers troubleshooting, ignition, and engine service.
Manual Section: Sect 1 Engine 1 p. 45Weak hydrostatic drive
A tired HST or low fluid leaves the tractor slow or unable to hold speed on grades. Sect 3 Transaxle explains the hydrostatic transaxle structure and checks.
Manual Section: Sect 3 Transaxle p. 111PTO will not engage
A stretched tension spring or worn clutch stops the mower drive from engaging. Sect 8 PTO covers adjusting the belt tension spring to its 69 to 72 mm length and clutch service.
Manual Section: Sect 8 PTO p. 171Excessive steering play
Wear in the steering gears and linkage lets wheel play grow past the 20 to 30 mm spec, making the tractor wander. Sect 6 Steering covers disassembly and adjustment.
Manual Section: Sect 6 Steering p. 151No-start and electrical faults
A failed safety switch, relay, or connector keeps the engine from cranking or starting. Sect 9 Electrical 1 provides the wiring diagrams and circuit checks.
Manual Section: Sect 9 Electrical 1 p. 179Uneven cut
Worn blades or loose blade hardware spoil the finish. Sect 11 Mower covers blade service and the 102.9 to 117.6 N·m blade screw torque.
Manual Section: Sect 11 Mower p. 241Brake drag or poor stopping
Worn or misadjusted brakes drag or fail to hold. Sect 4 Brakes covers checking, adjusting, and disassembling the brake system.
Manual Section: Sect 4 Brakes p. 135Frequently Asked Questions
Which tractors and engines does this manual cover?
It covers the Kubota T1570A, T1670A, T1770A, and T1870A, using the GH430V, GH570V, and GH630V engines plus the Kohler CV17 and CV19.
Does it cover the hydrostatic transaxle?
Yes. Sect 3 Transaxle explains the hydrostatic transaxle structure, troubleshooting, and servicing specifications. p. 111
Are wiring diagrams included?
Yes. Sect 9 Electrical 1 and the following electrical section provide wiring diagrams and circuit checks for tracing faults. p. 179
Can I use it to service the mower deck?
Yes. Sect 11 Mower covers blade service, deck adjustment, and the 102.9 to 117.6 N·m blade screw torque. p. 241
What format is this Kubota T1570–T1870 Series manual in?
This is a 378-page searchable PDF ready for immediate download. Pull it up on your phone right at the machine. No shipping, no waiting.
Are there any print restrictions on this Kubota T1570–T1870 Series manual?
Yes. The PDF carries no DRM restrictions, so print any page or section your shop needs. Works with any standard printer.
Does this Kubota T1570–T1870 Series manual include hydraulic schematics?
Yes. Full hydraulic diagrams are included, covering circuits, valve locations, and component specs for the Kubota T1570–T1870 Series.
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