Part of the Kubota Operator Manuals.
This is the Kubota BH70 backhoe operator manual, a 39 page PDF (publication 7K506-7991-1) for owners and operators of the BH70 attachment. It covers safe operation, backhoe specifications and terminology, pre operation checks, every control, scheduled maintenance, and the complete removal and reinstallation procedure.The specifications section gives real figures, including a maximum digging depth of 2197 mm (86.5 in.) and 180 degree bucket rotation, so you know the machine's working range.With this manual you can learn the boom, swing, dipperstick and stabilizer levers, run the daily and 50 hour maintenance checks, torque the sub frame mounting bolts to spec, and safely detach or remount the backhoe on the tractor when switching between jobs.
What's Inside This Kubota BH70 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safe Operation | - | Before Operating Backhoe, Operating the Backhoe, Safety for Children, Driving the Tractor on the Road, Servicing the Backhoe, Danger, Warning and Caution Labels, Care of Danger |
| Servicing of Backhoe | - | - |
| Specifications | - | Digging Force, Cycle Time, Hydraulic Cylinders, Bucket Alternatives |
| Backhoe Terminology | - | Backhoe Bucket, Bucket Teeth, Link, Bucket, Cylinder, Dipperstick |
| Pre-Operating Instructions | - | Pre-Operation Checks, Operator's Seat, Ballast, Operation, Reversing the Seat |
| Operating Instructions | - | Operating Speed, Backhoe Controls (Boom & Swing Lever, Dipperstick & Bucket Lever, Stabilizer Control Levers) |
| Maintenance | - | Daily Checks, Every 50 Hours (Checking Sub Frame Bolt Torque), Lubrication, Tire Inflation, Bucket Service (Changing: Backhoe Bucket, Bucket Teeth) |
| Removing the Backhoe | - | - |
| Reinstalling the Backhoe | - | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| M16 bolt and nut Tightening torque (Sub Frame) | 176-203 N-m (18.0-20.7 kgf-m, 130-150 ft-lbs) | p. 27 |
| Hose fitting, Flare nut (UNF) Tightening torque (9/16 thread size) | 22 to 25 N-m (2.3 to 2.6 kgf-m, 16 to 19 ft-lbs) | p. 30 |
| Tractor stopping distance from backhoe for reinstallation | 254 to 304 mm (10.0 to 12.0 in.) | p. 35 |
| Maximum Digging Depth | 2197 mm (86.5 in.) | p. 12 |
| Bucket Rotation | 180 deg. | p. 12 |
| Digging Force (Bucket Cylinder) | 2900 lbs (12900 N) | p. 13 |
| Boom Cylinder Extend Time | 3.4 seconds | p. 13 |
| Hydraulic Cylinder Rod Diameter (Boom, Dipperstick, Bucket, Swing) | 3.0 cm (1.18 in.) | p. 13 |
| Trenching 10" Bucket Weight | 29 kg (64 lbs) | p. 13 |
| Sub Frame M16 Bolt Torque | 176-203 N-m | p. 27 |
| SAE GR.5 1/4" Bolt Torque | 11.7 to 15.8 N-m | p. 29 |
| Metric 8.8 M6 Cap Screw Torque | 9.8 to 11.2 N-m | p. 29 |
Kubota BH70 Common Problems This Manual Covers
Bucket curl lever feels sloppy
BH70 owners report the bucket curl lever developing excess play or not responding cleanly, usually from worn linkage or valve wear. The Operating Instructions section explains the controls and their correct feel.
Manual Section: Operating Instructions p. 19Backhoe will not disengage cleanly
Removing the backhoe can stall if the couplers, pins and stabilizers are not handled in the right order. The Removing the Backhoe section lays out the sequence.
Manual Section: Removing the Backhoe p. 31Hoses hard to reconnect on reinstall
On remounting, the quick couplers and hoses can be awkward to match and easy to cross connect. The Reinstalling the Backhoe section covers the hookup steps.
Manual Section: Reinstalling the Backhoe p. 35Boom or bucket drifts or lifts weakly
Slow lift or a boom that settles after release usually means a hydraulic fluid, hose or cylinder issue. The Maintenance section covers the daily hydraulic checks to catch it.
Manual Section: Maintenance p. 26Sub frame mounting bolts loosen
Vibration can back off the sub frame bolts, giving play at the mount. The Maintenance section includes the every 50 hours sub frame bolt torque check.
Manual Section: Maintenance p. 26Confirming digging range and capacity
Buyers often need to confirm the machine's reach and force before a job. The Specifications section lists digging depth, digging force, cycle times and bucket rotation.
Manual Section: Specifications p. 12Frequently Asked Questions
What does this BH70 manual cover?
It is the operator manual for the Kubota BH70 backhoe, covering safe operation, specifications, terminology, controls, maintenance, and removing and reinstalling the attachment.
Does it list the sub frame bolt torque?
Yes. The Maintenance section gives the sub frame mounting bolt torque, listed as 176 to 203 N-m for the M16 bolts. p. 26
What are the backhoe specifications?
The Specifications section lists digging depth, digging force, cycle times and bucket rotation, including a maximum digging depth of 2197 mm (86.5 in.). p. 12
Does it explain removing and reinstalling the backhoe?
Yes. The Removing the Backhoe section covers detaching the unit, and a matching section covers reinstalling it on the tractor. p. 31
Is this Kubota BH70 Operator Manual a digital download?
You get a 39-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, bring it right to the shop floor.
Can I print this manual?
Yes. The PDF has no DRM restrictions, print any page or section you need for your shop. Works with any standard printer.
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