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Husqvarna 3120K Operator's Manual: Maintenance; Adjusting The Drive Belt; Changing The Drive Belt

Husqvarna cut-off saw operator's manual.
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Adjusting the drive belt

• The drive belt is fully
enclosed and well protected
from dust, dirt and
mechanical effects during
the cutting process.
• To tension the drive belt,
slightly loosen the bolts (A),
which secure the cutting
head and belt guard.
• Turn the tensioning screw
so that the nut (B) is located
directly under the arrow on
the cover. Shake the head
to ensure the spring can
tension the belt. The belt
now automatically has the
right tension.
• Tighten the bolts that hold
the cutting head.
IMPORTANT INFORMATION! A new drive belt should be
tensioned after using one or two tanks of fuel.

Changing the drive belt

• Loosen the two bolts (A).
• Turn the tensioning
screw(B) until the tension
has been released.
• Remove the two bolts (A).
• Remove the front belt cover
• Remove the belt from the
• Dismantle the cutting head.
• Remove the nut (D).
Remove the side cover.
• Replace the drive belt.
• To assemble reverse the
procedure for dismantling.
• Check the blade guard for
signs of cracking or other
damage. Replace it if
WARNING! Never use a power cutter without a
blade guard over the cutting blade.
– English


Belt pulley and clutch
Never start the engine when the belt pulley and clutch are
removed for maintenance.


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