Husqvarna 525P4S Operation Manual - Page 25

MAINTENANCE 2 Fins on the flywheel. 3 Cooling fins on the cylinder. 4 Cylinder cover (directs cold air over the cylinder). Clean the cooling system with a brush once a week, more often in demanding conditions. A dirty or blocked cooling system results in the machine overheating which causes damage to the piston and cylinder. Spark plug Clean the filter every 25 hours, or more regularly if conditions are exceptionally dusty. The spark plug condition is influenced by: • Incorrect carburettor adjustment. • An incorrect fuel mixture (too much or incorrect type of oil). • A dirty air filter. These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difficulties. If the machine is low on power, difficult to start or runs poorly at idle speed: always check the spark plug first before taking any further action. If the spark plug is dirty, clean it and check that the electrode gap is 0.65 mm. The spark plug should be replaced after about a month in operation or earlier if necessary. 0,65 Cleaning the air filter Close the choke valve by moving the choke control up. Remove the air filter cover and take out the filter. Blow clean with compressed air. Gear CAUTION! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/ cylinder. Check that the spark plug is fitted with a suppressor. Air filter IMPORTANT! All service on the saw head must be carried out by an authorized Husqvarna dealer. Always use Husqvarna's original grease to prevent damage to the gear in the saw head. Use grease with part number: 579 06 49-01 The air filter must be regularly cleaned to remove dust and dirt in order to avoid: • Carburettor malfunctions. • Starting problems. • Loss of engine power. • Unnecessary wear to engine parts. • Excessive fuel consumption. English - 25