Kubota MX5100 - Engine Troubleshooting

1-S1
MX5100, WSM
ENGINE
1. TROUBLESHOOTING
W1114419
Symptom Probable Cause Solution
Reference
Page
Engine Does Not
Start
No fuel Replenish fuel G-14
Air in the fuel system Vent air G-41
Water in the fuel system Change fuel and
repair or replace fuel
system
–
Fuel hose clogged Clean or replace G-27
Fuel filter clogged Replace G-26
Excessively high viscosity of fuel or engine oil at
low temperature
Use specified fuel or
engine oil
G-8
Fuel with low cetane number Use specified fuel G-8
Fuel leak due to loose injection pipe retaining nut Tighten retaining nut 1-S38
Incorrect injection timing Adjust 1-S19
Fuel camshaft worn Replace 1-S46, S47
Injection nozzle clogged Clean or replace 1-S39
Injection pump malfunctioning Replace 1-S43
Seizure of crankshaft, camshaft, piston, cylinder
or bearing
Repair or replace 1-S46, S47,
S49, S50
Compression leak from cylinder Replace head
gasket, tighten
cylinder head screw,
glow plug and nozzle
holder
1-S41
Improper valve timing Correct or replace
timing gear
1-S47
Piston ring and cylinder worn Replace 1-S51
Excessive valve clearance Adjust 1-S16
Stop solenoid malfunctioning Replace 1-S28
Starter Does Not Run Battery discharged Charge G-23
Starter malfunctioning Repair or replace 1-S33
Key switch malfunctioning Replace 9-S9
Wiring disconnected Connect –
Shuttle lever neutral switch malfunctioning Replace 9-S11
PTO switch malfunctioning Replace 9-S11