Kubota M105S - User Manual

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M105S

WORKSHOP MANUAL

TRACTOR

KiSC issued 03, 2007 A

Table of Contents

Questions and Answers

R
Robert OsborneAug 2, 2025
What to do if my Kubota M105S Tractor engine overheats?
- R
  Robin ValdezAug 2, 2025
  If your Kubota Tractor engine overheats, several issues could be the cause. First, the engine might be overloaded, so shift to a lower gear or reduce the load. Check the coolant level and fill the cooling system to the correct level, inspecting the radiator and hoses for leaks. A loose or defective fan belt can also cause overheating, so adjust or replace it. Make sure the radiator core or grille screens are free of debris. Finally, the coolant flow route may be corroded, requiring you to flush the cooling system.
K
kathleenswansonAug 8, 2025
Why does my Kubota Tractor have insufficient engine power?
- M
  marklittleAug 8, 2025
  Insufficient engine power in your Kubota Tractor could be due to insufficient or dirty fuel. Check the fuel system. Also, a clogged air cleaner can cause this issue; clean or replace the element.
R
Randy JonesAug 14, 2025
Why are the exhaust fumes colored on my Kubota M105S?
- J
  John SmithAug 14, 2025
  Colored exhaust fumes from your Kubota Tractor can indicate different issues. If the fumes are black, change the fuel and fuel filter, check the oil level, and clean or replace the air filter element. If the fumes are blue-white, check the intake air heater function in cold weather, heat the muffler by applying a load to the engine, inspect the injection nozzle, and change the fuel and fuel filter.
H
Hannah BerryAug 19, 2025
What to do if my Kubota M105S Tractor engine stops suddenly?
- R
  Richard MilesAug 20, 2025
  If your Kubota Tractor engine stops suddenly, it could be due to insufficient fuel. Refuel and bleed the fuel system if necessary.
J
Joseph RobertsOct 26, 2025
Why is my Kubota Tractor engine difficult to start?
- C
  Cassandra WardOct 26, 2025
  Several factors can cause a Kubota Tractor engine to be difficult to start. It could be due to no fuel flow, so check the fuel tank and fuel filter, replacing the filter if needed. Air or water in the fuel system could also be the problem; ensure the fuel line coupler bolt and nut are tight. In cold weather, the oil viscosity may increase, slowing the engine revolution; use oils with different viscosities depending on ambient temperatures and consider using an engine block heater. A weak battery can also prevent the engine from turning over quickly enough; clean the battery cables and terminals, charge the battery, and in cold weather, remove the battery, charge it, and store it indoors until use. Lastly, there could be an issue with the intake air heater system; check the slow blow fuse a...

Kubota M105S Specifications

General

Engine Type	Diesel
Cylinders	4
Hydraulic System Type	Open center
3-Point Hitch Category	II
Tire Size (Rear)	18.4-30
Engine Power	105 HP
PTO Horsepower	90 HP
Lift Capacity at 24"	4, 630 lbs
Tire Size (Front)	12.4-24

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