Yanmar EF393T User Manual

EF393T OM
66
TROUBLESHOOTING
If abnormal operations are found, stop the engine and found a problem by referring to the following table.
1. Engine
PROBLEM CAUSE REMEDY
Engine hard
to start or
not start
Starter motor
runs.
No fuel or improper fuel
Fill fuel.
Drain wrong fuel and fill proper fuel.
Water, dirt, or air in fuel system Drain, flush & bleed fuel system.
Clogged fuel filter Clean or replace fuel filter.
Fuel shut-off valve closed Open fuel shut-off valve.
Accelerator lever not pulled Pull throttle lever.
Engine oil too heavy Use oil of proper viscosity.
Starter motor
doesn’t run.
Reverser lever is not set to “N”. Set the lever to neutral.
PTO shift lever is not set to “N”. Set the lever to neutral.
Low voltage Charge battery.
Slow blow fuse blown Replace slow blow fuse.
Engine runs irregularly or
stalls frequently
Vent in fuel tank cap clogged Clean cap in solvent and blow dry.
Fuel filter clogged Clean or replace fuel filter.
Water, dirt, or air in fuel system Drain, flush & bleed fuel system.
Dirty or faulty injection nozzles See your YANMAR dealer.
Improper type of fuel Use proper fuel.
Engine solenoid linkage out of
adjustment
See your YANMAR dealer.
Insufficient oil Add oil
Engine knocks
Engine overheating See "Engine overheats".
Idle speed too slow Check idle speed.
Improper type of fuel Use proper fuel.
Lack of engine power
Engine overloaded Reduce load or shift to lower gear.
Air cleaner element clogged Clean air cleaner element.
Clogged fuel filter Clean or replace fuel filter.
Improper type of fuel Use proper fuel.
Engine overheating See "Engine overheats".
Improper ballast Adjust ballast to load.
Hydraulic stop valve closed Open stop valve.
Improper implement mounted
Check required horsepower for
implement.

Yanmar EF393T Specifications

General

Brand	Yanmar
Model	EF393T
Category	Lawn Mower
Language	English