Zetor PRIMO HT 20 NC, Operator'S Manual

Page: 121 / 134

Engine Faults
FAULT PROBABLE CAUSE SOLUTION
Engine
The engine runs
irregularly

Clogged injection
nozzle

Have it repaired by an authorized
service

Fuel leak from pipes

Tighten the clamp, replace the pipe
and attach the copper washer

Poor fuel injection
quality

Have it repaired by an authorized
service
Engine stops at
low speed

Defective injection
pump

Have it repaired by an authorized
service

Incorrect engine valve
play

Have it repaired by an authorized
service

Low idle speed

Set to standard speed

Defective nozzle

Have it repaired by an authorized
service
Engine overruns

Limited regulator

Have it repaired by an authorized
service

Oil level increasing

Have it repaired by an authorized
service
Engine suddenly
stops

Low fuel level

Refuel and bleed the system

Defective nozzle

Have it repaired by an authorized
service

Engine seizures due to
insufficient oil or poor
lubrication

Have it repaired by an authorized
service
The engine is
overheated

Insufficient coolant
amount

Refill coolant

Damaged fan belt

Replace belt

Clogged radiator

Clean the radiator

Insufficient amount of
engine oil

Check and refill
TROUBLESHOOTING
120