Yanmar EF393T User Manual

EF393T OM
67
1. Engine (continued)
PROBLEM CAUSE REMEDY
Engine overheats
Engine overloaded Reduce load or shift to lower gear.
Low coolant level
Fill coolant and check cooling system for
loose connections or leak.
Loose or defective fan belt Adjust fan belt and replace if needed
Radiator screen or fins clogged Clean radiator screen or fins.
Cooling system needs flushing Flush cooling system.
Defective thermostat Remove and check thermostat.
Defective temperature gauge or
sender
See your YANMAR dealer.
High oil consumption
Oil viscosity is too light Use proper viscosity oil.
Oil leaks
Check for leaks in lines, seals, drain plug
and around gaskets.
Engine emits white
smoke
Improper type of fuel Use proper fuel.
Low engine temperature
Warm up engine to normal operating
temperature.
Engine emits black or
gray smoke
Improper type of fuel Use proper fuel.
Engine overloaded Reduce load or shift to lower gear.
Air cleaner clogged Clean or replace air cleaner element.
High fuel consumption
Improper type of fuel Use proper fuel.
Engine overloaded Reduce load or shift to lower gear.
Air cleaner clogged Clean or replace air cleaner and element.
Crankcase breather clogged Clean breather pipe.
Radiator screen or fins clogged Clean radiator screen or fins.
Improper implement mounted
Check required horsepower for
implement.
Tire pressure too low. Inflate tires to proper pressure.
Clutch slipping. Adjust clutch free travel or replace disk.
Unusual noise Defective component parts See your YANMAR dealer.
2. Electrical system
PROBLEM CAUSE REMEDY
Battery not charged
Loose or corroded connections Clean and tighten connections.
Battery service life is ending
Check electrolyte level and specific
gravity and replace if necessary.
Loose or defective fan belt Adjust belt tension or replace belt.
Excessive engine idling Allow engine to idle when necessary.
Charging indicator lamp
lights during operation
Low engine speed Increase speed.
Defective battery
Check electrolyte level and specific
gravity and replace if necessary.
Loose or defective fan belt Adjust belt tension or replace belt.
Engine oil pressure indicator
lamp lights
Low oil Add oil.

Yanmar EF393T Specifications

General

Brand	Yanmar
Model	EF393T
Category	Lawn Mower
Language	English