Covers both the M5660SUH and M5660SUHD across 115 pages, drawn straight from Kubota's factory procedures for operation, daily inspection, and maintenance intervals. The safety section runs 11 pages on slope work, PTO hazards, and road travel. A full instrument panel walkthrough maps each LCD warning indicator, the Easy Checker system, and every hand and foot control. Periodic service fills 24 pages: the daily walk-around out to 3000-hour DPF cleaning, fluid specs for engine oil, transmission, and coolant, plus an implement limitations table listing max drawbar load and 3-point hydraulic lifting capacity. Fan belt deflection should read 7-9 mm (0.28-0.35 in.); rear wheel bolts torque to 260-304 N-m (192-224 ft-lbs). Bookmarked by section, so you can search any spec by keyword and land on it fast.
What's Inside This Kubota M5660SUH, M5660SUHD Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Universal Symbols | 3 | Safety Alert Symbol, Diesel Fuel, Engine-Rotational Speed, Position Control-Raised Position, Lock |
| Safe Operation | 11-22 | Before Operating the Tractor, Cab, Rops, Starting, Working, Safety for Children, Operating on Slopes, Driving the Tractor on the Road |
| Servicing of Tractor | 23-24 | Tractor Identification Plate, Tractor Serial Number, Engine Serial Number, Warranty, Scrapping the Tractor and its Procedure, ROPS Identification Plate |
| Specifications | 25-27 | Specification Table (Engine, Dimensions, Traveling System, Hydraulic Unit, PTO), Traveling Speeds |
| Implement Limitations | 28-29 | Tread with Farm Tires, Implement Weight Max. Drawbar Load Trailer Loading Weight, Lower Link End Max Hydraulic Lifting Capacity, Implement Weight, Max Drawbar Load |
| Instrument Panel and Controls | 30-32 | Instrument Panel |
| Pre-Operation Check | 33 | Daily Check (Check Item, Care of Danger, Warning and Caution Labels) |
| Operating the Engine | 34-45 | Exhaust Aftertreatment Devices, Diesel Particulate Filter Muffler, Handling Points, Fuel, Engine Oil, Prohibition of Unnecessary Idling Operation, Regeneration |
| Operating the Tractor | 46-62 | Operating New Tractor, Do Not Operate the Tractor at Full Speed for the First 50 Hours, Changing Lubricating Oil for New Tractors, Boarding and Leaving the Tractor |
| PTO | 63-65 | PTO Operation, PTO Clutch Control Lever, PTO Clutch Indicator, PTO Gear Shift Lever, PTO Speed Limiter, LCD Monitor Message, PTO Shaft Cover and Shaft Cap |
| Point Hitch & Drawbar | 66-69 | 3-Point Hitch, Category 1 & 2, Selecting the Holes of Lower Links, Selecting the Top Link Mounting Holes, Drawbar, Attaching and Detaching Implements, Lifting Rod, Top Link |
| Hydraulic Unit | 70-73 | 3-Point Hitch Control System, Position Control, Hydraulic Control Lever, Float Control, 3-Point Hitch Lowering Speed, Remote Hydraulic Control System, Remote Control Valve |
| Tires, Wheels and Ballast | 74-80 | Tires, Inflation Pressure, Dual Tires, Wheel Adjustment, Front Wheels, Rear Wheels, Ballast, Front Ballast |
| Maintenance | 81-85 | Service Intervals, Lubricants, Fuel and Coolant, Engine Oil:, Fuel:, Transmission Oil: |
| Periodic Service | 86-109 | How to Open the Hood, Hood, Daily Check, Walk Around Inspection, Checking and Refueling, Checking Water Separator, Checking Engine Oil Level, Checking Transmission Fluid Level |
| Storage | 110 | Warning, Tractor Storage, Removing the Tractor from Storage |
| Troubleshooting | 111-112 | Engine Troubleshooting (Engine is Difficult to Start or Won't Start, Insufficient Engine Power, Engine Stops Suddenly, Exhaust Fumes are Colored, Engine Overheats) |
| Options | 113 | Engine Block Heater, Front End Weights, Rear Wheel Weights, Canopy, Double Acting Remote Hydraulic Control Valve with Detents and Self-Cancelling |
| Appendices | 114-115 | Index, 3-Point Hitch Lowering Speed, Foldable ROPS, Air Cleaner Primary Element |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Rear Wheel Bolt Torque (Standard) | 260 to 304 N-m (26.5 to 31 kgf-m) [192 to 224 ft-lbs] | p. 77 |
| Rear Wheel Bolt Torque (Steel disk, 8.3-24 tires) | 244 N-m (24.9 kgf-m) (180 ft-lbs) | p. 77 |
| Brake Pedal Free Travel | 40 to 45 mm (1.6 to 1.8 in.) | p. 73 |
| Air Cleaner Cleaning Compressed Air Pressure | under 205 kPa (2.1 kgf/cm², 30 psi) | p. 71 |
| Fan Belt Deflection | 7 to 9 mm (0.28 to 0.35 in.) | p. 72 |
| Fuel Tank Capacity | 67 L (17.7 U.S.gals.) | p. 62 |
| Engine Oil Capacity (with filter) | 7.2 L (7.6 U.S.qts.) | p. 62 |
| Front Tire Pressure (4WD, 8.3-24, 6PR) | 200 kPa (2.0 kgf/cm², 29 psi.) | p. 74 |
| Front Tire Pressure (4WD, 9.5-22, 6PR) | 200 kPa (2.0 kgf/cm², 29 psi.) | p. 74 |
| Engine Oil Capacity | 7.2 L (7.6 U.S.qts.) | p. 25 |
| Coolant Capacity | 8 L (8.5 U.S.qts.) | p. 25 |
| Transmission Fluid Capacity | 48 L (50.7 U.S.qts.) | p. 84 |
Kubota M5660SUH, M5660SUHD Common Problems This Manual Covers
Engine turns over slowly or hesitates to start in cold weather p. 111
Check the engine start system per page 111. Look over the battery connections for corrosion and confirm fuel is reaching the engine; bleed the fuel system if it isn't. Keeping to the 400 Hr engine oil change interval also helps cold-weather cranking.
Manual Section: TroubleshootingImplement fails to engage or PTO clutch indicator flashes on the instrument panel p. 63
Confirm the PTO gear shift lever is fully engaged. The operator presence control system on page 63 shows how the safety interlocks should behave, so check those next. Top up the transmission fluid if the level sits below its 48 L (50.7 U.S.qts.) capacity.
Manual Section: PTOBrake pedal feels loose or requires excessive force to stop the tractor during operation p. 73
Measure the brake pedal free travel with a ruler. Adjust the linkage rods until free travel falls between 40 to 45 mm (1.6 to 1.8 in.), the range given on page 73. Then work both pedals to confirm they engage evenly and don't drag.
Manual Section: Hydraulic UnitTemperature gauge spikes into the red zone or coolant leaks near the radiator base p. 72
Inspect the radiator fins and clear any debris packed between them. Page 72 covers fan belt tension; the deflection should stay within 7 to 9 mm (0.28 to 0.35 in.). Top off the coolant recovery tank when the level runs low.
Manual Section: Hydraulic UnitFront wheels wobble or steering feels unsteady when operating the tractor on hard surfaces p. 75
Torque the front axle mounting bolts to 124 to 147 N-m (91.5 to 108.9 ft-lbs) on 2WD models, the figure listed on page 75, and make sure all wheel hardware is snug before you roll. Look the tires over for uneven wear and correct inflation.
Manual Section: Tires, Wheels and BallastFrequently Asked Questions
How do I reset the DPF regen on a Kubota M5660SUH/M5660SUHD?
There's no 'reset' as such; the manual covers how to start DPF regeneration. Auto Regeneration Mode kicks in on its own once the engine is running and the DPF INHIBIT switch lamp reads 'OFF'. Parked Regeneration takes a few steps: set the parking brake, shift the shuttle lever to neutral, move the PTO clutch control lever to 'OFF', drop engine rpm to idle, lower the implement, then press the DPF INHIBIT switch to turn it 'OFF'. With those conditions met, the parked regeneration switch flashes; press it to begin the cycle, which usually runs 15-20 minutes.
What do the warning or error lights on a Kubota M5660SUHD mean?
The Easy Checker(TM) on the instrument panel flags several warnings. An 'Engine warning' light points to a fault in the engine control system or to engine overheat. A 'Master system warning' light flashes when trouble shows up in the engine, transmission, or other control parts. Any time a warning lamp lights during operation, stop the engine right away and track down the cause.
How do I clear fault codes on a Kubota M5660SUH?
There's no operator-level procedure for clearing fault codes. Whatever code shows up, whether 'ERROR-1 Acceleration sensor (main) trouble' or 'ERROR-23 Shuttle rotating sensor or switch trouble', the listed operator action is the same: 'Contact your local KUBOTA Dealer.'
What causes hard starting or shuttle hesitation on a Kubota M5660?
Hard starting (or no start) traces back to a handful of causes: no fuel flow, air or water in the fuel system, thicker oil in winter that slows engine revolution, a weak battery that won't spin the engine fast enough, or a fault in the intake air heater system. 'Shuttle hesitation' isn't listed as an operator troubleshooting item, though power train error codes tied to the shuttle sensors call for a KUBOTA Dealer.
How do I turn on the hazard lights or work lights on a M5660SUHD?
Push the hazard light switch and the hazard lights flash, along with the L/H and R/H indicators on the instrument panel; push it again to shut them off. As for work lights, the manual notes a 'Work light (if equipped) 12 V, 35 W' bulb and an accessory outlet for a rear work light, but describes no dedicated switch for integrated work lights.
How will I receive this Kubota M5660SUH, M5660SUHD Operator Manual?
This is a 115-page searchable PDF ready for immediate download. It works on any device, so you can pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print specific sections of this Kubota M5660SUH, M5660SUHD manual?
None at all. The PDF is DRM-free, so print whatever sections you need to take out to the shop. Standard letter or A4 paper works fine.
Document Quality
This document is a scanned PDF with an optical character recognition (OCR) layer, allowing you to search and copy the full text. The text is crisp and consistently easy to read throughout. Diagrams and illustrations are raster images, but their labels remain clear and legible. Pages are clean with no noticeable scan artifacts, stains, or skewed content, though page 10 is intentionally blank. Overall, this is a well-processed scanned document.
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