Husqvarna Rider 13C Workshop Manual page 24

Design and function
The mowing deck is raised and lowered using the
mechanical lifting lever, which actuates a shaft
that rotates.
When the shaft rotates, the chain that is secured
in an arm on the inner end of the shaft raises or
lowers the tool frame.
The attachment's lifting device
The mowing deck is rear suspended with the lug
on the rear transverse axle in a U-bracket on the
tool frame. The front of the tool frame is linked to
a bracket on the attachment. The front rollers are
supported against the ground, for example, when
turning when the attachment tends to lean. The
rollers on the rear section of the protective frame
are used when removing and fitting the mowing
deck or moving it to the service position.
Otherwise, when dismantling, the rear of the
attachment would fall directly to the ground when
the lug on the rear axle releases its grip.
The mowing height is adjusted using the lever,
which has a catch for the different mowing height
positions. The setting for the mowing height range
is located on the same axle, see "Adjustment of
the mowing height range". Two connecting rods
via a toggle joint actuate the protective frame
Mowing height manoeuvring
22
– English
When lowering the unit, the two connecting rods,
via the three-point link, will alter the belt adjuster
so that the drive belt is tensioned and the blades
begin to rotate.
When the attachment is raised the microswitch in
the safety circuit is actuated.
around the mowing deck and raise or lower the
mowing deck's cover within the mowing height
range.
There are two struts on the top of the cutting unit
cover. The upper one is coupled between the
horizontal connecting rod and the tongue of the
forward perpendicular shaft on the top of the
mowing deck cover. When the shaft is rotated, it
will raise or lower the cutting unit cover in relation
to the protective frame. The lower strut (parallel
strut) is connected between the front and rear
transverse axles, so that even the rear axle
rotates in the same way as the front axle. There is
an adjuster on the parallel strut to adjust the
mowing deck cover's parallelism with the ground.
See "Checking and adjusting the mowing deck's
the parallelism".