MAINTENANCE
Drive shaft
The drive shaft must be greased every three months during
Spark plug
The spark plug condition is influenced by:
•Incorrect carburetor 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 0.020 inch (0.5 mm). The spark plug should be replaced after about a month in operation or earlier if necessary.
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.
Winter use
Running problems can occur when using the machine in the cold and snowy conditions caused by:
•Too low engine temperature.
•Icing of the air filter and carburetor. Special measures are therefore often required:
•Partly mask the air inlet on the starter to increase the working temperature of the engine.
•Preheat the intake air to the carburetor by using the heat from the cylinder.
Temperature 5°C (41°F) or colder:
The air filter holder is prepared so it can be changed for use in the cold. Remove the air filter cover and air filter. Turn the winter cover anticlockwise using a screwdriver so that the preheated air from the engine can pass inside the carburettor compartment and prevent, for example, the air filter from icing up (see figure).
For temperatures below 5°C (41°F) and/or in snow conditions there is also:
•a special cover for the starter housing
•a cover for cylinder cover’s air inlet should be fitted as illustrated.
These reduce the cooling air and prevent large amounts of snow from being sucked into the engine.
IMPORTANT! The machine MUST be returned to its standard design at temperatures warmer than 5°C
(41°F). Otherwise there is a risk of overheating resulting in serious engine damage.
IMPORTANT! Any maintenance other than that described in this manual must be carried out by your servicing dealer (retailer).
IMPORTANT! Use only HUSQVARNA replacement parts. Use of other brands of replacement parts can cause damage to your unit or injury to the operator or others.Your warranty does not cover damage or liability caused by the use of accessories and/or attachments not specifically recommended by HUSQVARNA.
34 – English