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MAINTENANCE
Carburetor
Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions.
After your unit has been run
!WARNING!
The complete clutch cover with shaft must be fitted before the machine is started, otherwise the clutch can become loose and cause personal injury.
Operation
• The carburetor governs the engine‘s speed via the throttle. Air/fuel is mixed in the carburetor. The air/fuel mixture is adjustable. To take advantage of the engine‘s optimal output the adjustment must be correct.
• The setting of the carburetor means that the engine is adapted to local conditions, for example, the climate, altitude, gasoline and the type of
•The carburetor is equipped with three adjustment possibilities:
L = Low speed needle
H = High speed needle
T = Idle speed adjuster
Basic setting
•The carburetor is set to its basic setting when test run at the factory. The basic setting should be kept during the machine‘s first working hours. Thereafter the carburetor should be finely adjusted. Fine adjustment should be carried out by a skilled technician.
NOTE! If the cutting attachment rotates/moves while the engine is idling the
Rec. idling speed: 2 700 rpm.
Recommended max. speed: See “Technical Data” .
!WARNING!
If the idling speed cannot be adjusted so that the cutting attachment stops, contact your service workshop. Do not use the machine until it has been correctly adjusted or repaired.
Fine adjustment
•When the machine has been
Conditions
•Before any adjustments are made the airfilter should be clean and the airfilter cover fitted. Adjusting the carburetor while a dirty airfilter is in use will result in a leaner mixture when the filter is finally cleaned. This can give rise to serious engine damage.
•Carefully turn the L and H needle to the mid point between fully turned in and fully turned out..
•Do not attempt to adjust the needles beyond the stops as damage can occur.
•Now start the machine according to the starting instructions and run it warm for 10 minutes.
NOTE! If the cutting attachment rotates/moves the T screw should be turned
screw
•The fuel quantity in relation to the air flow permitted by the throttle opening is adjusted using the L and
•The
Low speed needle L
Try to find the highest idling speed, turning the low speed needle L clockwise respectively counter- clockwise. When the highest speed has been found, turn the low speed needle L 1/4 turn
+ 1/4
L
English – 17