Kubota built this B2650, B3350, B3350SU Operator Manual (OEM #6C410-6311-8) around one job: running your compact tractor the way the factory intended. Fifteen pages walk through operating procedures, from DPF regeneration sequences and HST speed control to PTO engagement and 3-point hitch setup. A full service intervals table lists every oil, filter, and grease point from 50 hours out to 1000. The instrument panel section explains each Easy Checker lamp, sitting next to a daily pre-operation checklist, fluid capacities, and a troubleshooting chart that pairs displayed error codes with the operator action required. Torque the wheel bolts to 196-225 N-m (145-166 ft-lbs), top off the 27 L fuel tank, and roll out. No forum thread answers fast enough when the machine is down. Every section is bookmarked, and the 112-page PDF is keyword-searchable on any device.
What's Inside This Kubota B2650, B3350, B3350SU Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safe Operation | 9-18 | Before Operating the Tractor, Cab, Rops, Operating the Tractor (Starting, Working, Safety for Children), Operating on Slopes, Driving the Tractor on the Road, Parking the Tractor |
| Servicing of Tractor | 19-20 | Type Serial No., Warranty, Scrapping the Tractor and Its Procedure, ROPS Identification, Diesel Particulate Filter Serial Number |
| Specifications | 21-23 | Specification Table, Hydraulic Unit, Traveling Speeds |
| Implement Limitations | 24-25 | Tread with Farm Tires, Actual Figures, Implement |
| Instrument Panel and Controls | 26-28 | Instrument Panel, Switches and Hand Controls, Illustrated Contents, Foot and Hand Controls |
| Pre-Operation Check | 29-29 | Daily Check, Check Item |
| Operating the Engine | 30-44 | Exhaust Aftertreatment Devices (Diesel Oxidation Catalyst and Diesel Particulate Filter Muffler) |
| Operating the Tractor | 45-59 | 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 | 60-62 | Pto Operation (Pto Select Lever, Mid-Rear Pto, Rear Pto, Mid-Pto), Pto Clutch Lever, Lcd Monitor Message, Stationary Pto |
| Point Hitch & Drawbar | 63-67 | 3-Point Hitch (Selecting the Holes of Lifting Rods and Lower Links, Selecting the Top Link Mounting Holes, Lifting Rod, Top Link), Drawbar, Telescopic Stabilizers, Check Chains |
| Hydraulic Unit | 68-72 | 3-Point Hitch Control System (Position Control, Hydraulic Control), 3-Point Hitch Lowering Speed, Auxiliary Hydraulics (Hydraulic Block Type Outlet) |
| Tires, Wheels and Ballast | 73-76 | Tires (Inflation Pressure, Dual Tires), Wheel Adjustment (Front Wheels), Rear Wheels, Treads, Ballast (Front Ballast, Rear Ballast) |
| Maintenance | 77-82 | Service Intervals (Engine Oil, Engine Oil Filter, Transmission Oil Filters [Hst], Hydraulic Oil Filter, Transmission Fluid, Front Axle Case Oil, Front Axle Pivot, Engine Start System, Greasing, Wheel Bolt Torque, Battery Condition, Air Cleaner Element [Double Element Type] Primary Element, Air Cleaner Element [Double Element Type] Secondary Element, Fuel Filter Element, Fan Belt, Brake) |
| Periodic Service | 83-106 | Waste Disposal, How to Open the Hood, Close the Hood, Engine Side Cover, Daily Check, Walk Around Inspection, Checking and Refueling, Checking Engine Oil Level |
| Storage | 107-107 | Tractor Storage, Removing the Tractor from Storage |
| Troubleshooting | 108-109 | Engine Troubleshooting, Trouble Cause Countermeasure, Power Train Trouble Shooting, Displayed Error Code Trouble Operator's Action |
| Options | 110-110 | Rear Work Light, Front End Weights, Mounting Kit, Engine Block Heater, Rear Remote Hydraulics, Spacer Kit |
| Appendices | 111-112 | Index, PM Warning Level and Required Procedures, Position Control |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Wheel Bolt Torque | 196 to 225 N-m (20 to 23 kgf-m, 145 to 166 ft-lbs.) | p. 72 |
| Air Cleaner Primary Element Replacement Interval | Every 1000 hours or once yearly, whichever comes first | p. 74 |
| Coolant Boiling Point (50% Anti-freeze) | 108 °C (226 °F) | p. 101 |
| Fuel tank capacity | 27 L (7.1 U.S.gals.) | p. 21 |
| Engine coolant capacity | 4.3 L (4.5 U.S.qts.) | p. 21 |
| Transmission case capacity | 15 L (4.0 U.S.gals.) | p. 21 |
| Max. lift force (at lift points) | 970 kg (2139 lbs.) | p. 22 |
| Rear-PTO speed | 540 rpm | p. 22 |
| Engine oil change interval | Every 200 Hr | p. 77 |
| B3350 only | ||
| Differential Pressure Sensor Hose Replacement | Consult your local KUBOTA Dealer for this service. | p. 86 |
| B2650HSD | ||
| Engine crankcase (with filter) capacity | 4.0 L (4.2 U.S.qts.) | p. 21 |
| B3350HSD/B3350SUHSD | ||
| Engine crankcase (with filter) capacity | 4.8 L (5.1 U.S.qts.) | p. 21 |
Kubota B2650, B3350, B3350SU Common Problems This Manual Covers
Kubota B2650 temperature gauge spikes into the red zone while operating under heavy loads or mowing p. 101
Inspect the radiator and grill screens for debris, then check the coolant level. The 50% anti-freeze mix should hold a 108 °C (226 °F) boiling point, the figure given on page 101. Clear any packed cooling fins where airflow is choked.
Manual Section: Cooling System OverheatingRegeneration warning light flashes on the dashboard and tractor enters limp mode with severely reduced engine power p. 109
Confirm the engine crankcase sits at exactly 4.8 L (5.1 U.S.qts.) on the B3350, since the wrong oil level skews emissions. Match the fault against the error code reference on page 109 to pin down the exhaust aftertreatment problem. A clogged differential pressure sensor hose is dealer work.
Manual Section: TroubleshootingThree point hitch operates slowly and front loader struggles to lift heavy materials off the ground p. 22
Top off the transmission case to its 15 L (4.0 U.S.gals.) capacity if the level reads low. Swap the hydraulic oil filter on its 400 Hr schedule. Keep the load under the maximum lift force of 970 kg (2139 lbs.) listed on page 22.
Manual Section: SpecificationsEngine turns over slowly and struggles to start or stalls frequently while operating in dusty environments p. 108
Check the troubleshooting procedures on page 108 for slow engine revolution. Inspect the air cleaner evacuator valve for dirt buildup. Replace the primary air cleaner element if it exceeds the maximum interval of 1000 hours. Fill the fuel tank to its maximum 27 L (7.1 U.S.gals.) capacity.
Manual Section: TroubleshootingFrequently Asked Questions
How do I clear an error code on a Kubota B3350SU?
Codes such as Err 2 (Fuel sensor trouble), Err 3 (Meter panel memory reading trouble), or Err 21 (CAN communication trouble) show up on the liquid crystal display. The manual gives no user-resettable function for them, so contact your local KUBOTA Dealer for repairs.
What does the warning light on a Kubota B2650 mean?
On the Kubota B2650, each Easy Checker (TM) lamp flags a specific fault: Engine overheat (water temperature gauge reading an unusual level), Engine oil pressure (pressure below the prescribed level), Electrical charge (alternator not charging the battery), and Master system warning (a fault that restarting the tractor did not clear).
How do I reset the regen indicator on a Kubota B3350?
Once a set amount of PM builds up in the DPF, the regeneration indicator on a Kubota B3350 turns "ON", then switches "OFF" by itself when the cycle finishes. Should it begin flashing, keep working and rev the engine to maximum rpm until it stops flashing and stays "ON". The indicator has no manual reset; its state follows the DPF regeneration process.
How to reset Kubota B3350SU error code
There is no operator reset for these codes. When Err 2 (Fuel sensor trouble), Err 3 (Meter panel memory reading trouble), or Err 21 (CAN communication trouble) appears on the liquid crystal display, the manual directs you straight to your local KUBOTA Dealer for repairs.
What are the replacement specifications for Air cleaner element?
Replace the air cleaner primary element every 1000 hours or once a year, whichever comes first. On double-element types, the primary and secondary elements share that same interval. Fit only a KUBOTA genuine filter; anything else risks serious engine damage.
How quickly can I access this Kubota B2650, B3350, B3350SU manual after buying?
A 112-page Operator Manual in searchable PDF format, available the moment you complete checkout. View it on computer, tablet, or phone, with no shipping wait.
Are there any print restrictions on this Kubota B2650, B3350, B3350SU manual?
Yes. The PDF carries no DRM restrictions, so print any page or section you need for your shop. It works with any standard printer.
Document Quality
This document is a scanned PDF with an OCR layer, allowing you to search and copy text, though the text itself is not perfectly crisp and shows minor pixelation. Diagrams and illustrations are raster images, generally clear with readable labels, but they are not vector graphics. All pages are clean, free of scan artifacts, stains, marks, or skewing. There are no notable blank or filler pages throughout the manual.
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