Kubota WSM BX1880 User Manual (English)

Questions and Answers:

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dmcknightAug 21, 2025
Why is my Kubota Lawn Mower producing black exhaust?
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  William OdonnellAug 21, 2025
  If you notice black or dark gray exhaust gas from your Kubota Lawn Mower, it could be due to a few reasons. You might be overloading the mower, so try decreasing the load. It could also be due to using low-grade fuel, so switch to the specified fuel. A clogged fuel filter or air cleaner could also be the culprit, so replace the fuel filter and clean or replace the air cleaner. Finally, deficient nozzle injection can cause this issue, so repair or replace the nozzle.
M
Matthew GuerraAug 23, 2025
What to do if the starter does not operate on my Kubota WSM BX1880 Lawn Mower?
- K
  Katherine GrantAug 23, 2025
  If the starter on your Kubota Lawn Mower isn't working, it could be due to a discharged battery (charge it), a malfunctioning starter (repair or replace it), a malfunctioning main switch (replace it), disconnected wiring (connect it), or a malfunctioning safety switch (check and replace it).
T
Tyler MorrisAug 26, 2025
Why is my Kubota WSM BX1880 Lawn Mower emitting blue or white exhaust gas?
- R
  reidpaulAug 26, 2025
  If you notice white or blue exhaust gas from your Kubota Lawn Mower, it could be due to excessive engine oil (reduce to the specified amount), worn or stuck piston rings and cylinder (repair or replace), incorrect injection timing (adjust it), or deficient compression (check it).
W
Walter LewisAug 27, 2025
Why is my Kubota Lawn Mower using excessive lubricant oil?
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  vmorrisAug 28, 2025
  If you're noticing excessive lubricant oil consumption in your Kubota Lawn Mower, it could be due to a few reasons: the piston ring's gap facing the same direction (shift ring gap direction), a worn or stuck oil ring (replace it), a worn piston ring groove (replace the piston), worn valve stem and valve guide (replace them), or worn crankshaft bearing and crank pin bearing (replace them).
C
Catherine BlakeAug 30, 2025
What causes low oil pressure in my Kubota WSM BX1880 Lawn Mower?
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  Michael PetersonAug 30, 2025
  If you have low oil pressure in your Kubota Lawn Mower, it could be due to several reasons. The engine oil might be insufficient, so fill it up. The oil strainer could be clogged, so clean it. The relief valve might be stuck with dirt, so clean it. The relief valve spring might be weak or broken, so replace it. There could be excessive oil clearance of the crankshaft bearing, crankpin bearing, or rocker arm, so replace them. The oil passage might be clogged, so clean it. You might be using a different type of oil, so use the specified type of oil. The oil pump might be damaged, so replace it. Finally, the oil filter might be clogged, so replace it.
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Joshua HallSep 1, 2025
Why is the engine revolution not smooth on my Kubota WSM BX1880 Lawn Mower?
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  Elizabeth EllisSep 1, 2025
  If your Kubota Lawn Mower's engine revolution isn't smooth, several factors could be at play. Start by checking the fuel filter for clogs or dirt and replace if necessary. The air cleaner might also be clogged, so clean or replace it. Ensure the injection pipe retaining nut is tightened to prevent fuel leaks. Issues with the injection pump, such as malfunctioning, may require repair or replacement. Other potential causes include incorrect nozzle opening pressure (adjust it), a stuck or clogged injection nozzle (repair or replace), or a malfunctioning governor (repair).
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John EdwardsSep 3, 2025
Why is my Kubota WSM BX1880 Lawn Mower engine overheating?
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  Michael DavisSep 3, 2025
  If your Kubota Lawn Mower is overheating, there are several possible causes. Check if the engine oil or coolant levels are insufficient and fill if needed. Inspect the fan belt for breakage or elongation, and replace or adjust it accordingly. Clean any dust clogging the radiator net and fins. If the inside of the radiator or coolant flow route is corroded, clean or replace them. A damaged radiator cap should be replaced. Avoid overload operating by reducing the load. Finally, a damaged head gasket should be replaced.
H
hbakerSep 6, 2025
Why does my Kubota WSM BX1880 Lawn Mower have deficient output?
- A
  austin69Sep 6, 2025
  If your Kubota Lawn Mower is experiencing deficient output, it could be due to several reasons. Incorrect injection timing may be the cause, so you should adjust it. The engine's moving parts might be seizing, requiring repair or replacement. A malfunctioning injection pump or deficient nozzle injection can also lead to this issue, so repair or replace the pump or nozzle as needed. Additionally, a dirty or clogged air cleaner can reduce output, so clean or replace it. Finally, a compression leak may be the problem, requiring you to replace the head gasket and tighten the cylinder head screws, glow plug, and nozzle holder.
E
Elizabeth WrightSep 8, 2025
Why does the battery on my Kubota WSM BX1880 quickly discharge?
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  Deborah CantrellSep 8, 2025
  If your Kubota Lawn Mower's battery is quickly discharging, it could be due to insufficient battery electrolyte (fill with distilled water and charge), a slipping fan belt (adjust belt tension or replace), disconnected wiring (connect it), a damaged rectifier (replace it), a damaged alternator (replace it), or a damaged battery (replace it).
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tshermanSep 12, 2025
Why is fuel mixing into the lubricant oil in my Kubota WSM BX1880?
- C
  cassandra66Sep 12, 2025
  If fuel has mixed into the lubricant oil of your Kubota Lawn Mower, it could be due to a worn injection pump plunger (repair or replace), deficient nozzle injection (repair or replace nozzle), or a broken injection pump (replace).

Kubota WSM BX1880 Specifications

General

Brand	Kubota
Model	WSM BX1880
Category	Lawn Mower
Language	English

Summary

1. INFORMATION

Safety First

Explains the meaning of DANGER, WARNING, CAUTION, IMPORTANT, and NOTE symbols used in the manual.

Safety Labels

Information on safety labels for BX tractor and mower models, including replacement guidance.

Specifications

Details specifications for BX tractor and mower models, including dimensions and capacities.

Traveling Speeds

Lists traveling speeds based on tire size and gear shift settings for different models.

2. GENERAL

Identification

How to identify tractor and mower serial numbers and model information.

General Precautions

Important safety and handling procedures for disassembly, assembly, and part measurement.

Lubricants, Fuel, and Coolant

Specifications for BX tractor and mower fluids, including types, capacities, and grades.

Maintenance Check List

Service intervals for BX tractor and mower based on hour meter readings and time.

3. ENGINE

Mechanism

Details the structure and function of engine components like cylinder block, pistons, crankshaft, and fuel system.

Servicing

Covers troubleshooting, specifications, tightening torques, and checking/adjusting engine parts.

4. TRANSAXLE

Mechanism

Explains the structure of transaxle, traveling system (HST), PTO system, and differential gears.

Servicing

Includes troubleshooting, specifications, torques, and checking/adjusting procedures for the transaxle.

5. FRONT AXLE

Mechanism

Covers front axle structure and wheel alignment parameters like camber, caster, and toe-in.

Servicing

Details troubleshooting, specifications, torques, and checking/adjusting procedures for the front axle.

6. STEERING

Mechanism

Explains the structure of the steering system, including pump, cylinder, controller, and hydraulic circuit.

Servicing

Covers troubleshooting, specifications, torques, and checking/adjusting steering components.

7. HYDRAULIC SYSTEM

Mechanism

Details the structure of the hydraulic system, pump, control valve, flow priority valve, and relief valve.

Servicing

Includes troubleshooting, specifications, torques, and checking/adjusting hydraulic system components.

8. ELECTRICAL SYSTEM

Mechanism

Covers wiring diagrams, connector charts, circuit diagrams, and system functions like starting and charging.

Servicing

Details troubleshooting, specifications, torques, and checking/adjusting electrical system components.

9. MOWER

Mechanism

Explains the structure of mower power transmission, lifting, and self-balancer systems.

Servicing

Covers mower troubleshooting, specifications, torques, and setup procedures.

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Kubota WSM BX1880 User Manual

Table of Contents

Questions and Answers:

Kubota WSM BX1880 Specifications

Summary

1. INFORMATION

Safety First

Safety Labels

Specifications

Traveling Speeds

2. GENERAL

Identification

General Precautions

Lubricants, Fuel, and Coolant

Maintenance Check List

3. ENGINE

Mechanism

Servicing

4. TRANSAXLE

Mechanism

Servicing

5. FRONT AXLE

Mechanism

Servicing

6. STEERING

Mechanism

Servicing

7. HYDRAULIC SYSTEM

Mechanism

Servicing

8. ELECTRICAL SYSTEM

Mechanism

Servicing

9. MOWER

Mechanism

Servicing

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