Trouble Shooting Guide

Problem

Cause

 

 

 

The engine lacks power

Air in fuel system

 

Clogged air filter

 

Fuel filter blocked

 

• Defective excess flow valve

 

Low feed pressure

 

Defective feed pump

 

• Incorrect timing of injection pump

 

Serious engine damage

 

 

 

Engine overheating

Engine overloaded

 

• Coolant level too low

 

• Air intake or radiator blocked with grass or dirt

 

• Fan damaged or not working

 

• Too little or no oil in the engine

 

Defective radiator cap

 

• Broken coolant pump drive belt

 

 

 

Battery does not charge

One or more battery cells faulty

 

• Poor contact on the battery terminal cable connectors

 

Defective generator

 

• Generator drive belt broken or slipping

 

• Breakage on cables to the generator

 

Insufficient battery maintenance

 

Sulphated battery

 

 

 

The machine vibrates

The blades are loose

 

Damaged universal joint

 

• The engine is loose

 

• The hydraulic pump is loose

 

• Damaged support bearings for power take off shaft

 

• The bevel gear is loose

 

• The engine is not running on all cylinders

 

• Pulley loose or bearings worn in cutting unit

 

• One or more blades imbalanced, caused by damage

 

 

or poor balancing after sharpening

 

 

 

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Husqvarna PT26 D manual Problem Cause