Husqvarna 3120K manual Assembly, Fitting the cutting head, Checking the drive shaft and flanges

ASSEMBLY

Fitting the cutting head Fitting the cutting blade

Remove the bolts (1). Remove		Husqvarna cutting blades are
the cover. Fit the drive belt		manufactured and approved
over the clutch drum. Refit the		for freehand cutting. The
cover and tighten the bolts.		paper labels on each side of
		the blade are there to
		distribute the pressure from
	1	the flange washer and prevent
		the blade from slipping.
		The blade is placed between
		the flange hub (A) and the
		flange washer (B). The flange	A	B
		washer is turned so that it fits
		in the flange hub. The cutting
	2	blade is tightened using the
		socket spanner 501 69 17-02.
Feed the drive belt over the		The shaft can be locked using
pulley on the cutting head (2).		a screwdriver, steel pin or the
		like. This is slid in as far as
		possible. The blade is tighte-
		ned clockwise.
		Tightening torque for the bolt
		holding the blade is:
		15-25 Nm (130-215 in.lb).
Slide on the belt cover and
secure the cutting head
together with the belt guard.
Tighten both bolts (4) by hand.
Screw in the tensioning screw	4	3
(3) so that the square nut is in
line with the arrow on the belt
guard. Shake the head to
ensure the spring can tension		Blade guard
the belt. This automatically
adjusts the belt to the correct		The blade guard should
tension. Tighten both bolts (4)
		always be fitted on the
using the combination
		power cutter.
spanner.
		The guard should be adjusted
NOTE! After fitting a new belt
		so that the rear section is
the belt tension must be
		close to the work piece.
readjusted after the first two
		Cutting fragments and sparks
tanks of fuel have been used.
		are then collected by the
		guard and led away from the
		user.
Checking the drive shaft and flanges
• Check that the threads on		WARNING!
the drive shaft are
undamaged.		16 inch blade and blade guard should only be
		used on power cutters originally equipped
		! with a 16" blade guard. If a blade guard is
• Check that the contact		fitted as a spare part on a power cutter
surfaces of the cutting blade		originally equipped with a 14" blade guard, the
and flanges are flat, run		16" cutting blade will rotate too fast. A cutting
correctly on the spindle and		blade with too high speed can burst or cause
are free from foreign		serious injury and damage.
objects.
Do not use flanges that are
twisted, have damaged
edges, untrue or dirty. Do
not use different size
flanges.

English – 13