Special Functional Components - Husqvarna K 960 Workshop Manual

SPECIAL FUNCTIONAL COMPONENTS

A A
B
Torx T27
A
B
New technical solutions
Husqvarna K960 is the first model in a new
generation of power cutters with a number of
new technical solutions:
New engine technology – Dual
Charge
The cylinder, piston and carburettor are
radically changed.
The carburettor's inlet duct (venturi) is
split in two halves. The upper venturi half (A)
supplies the cylinder with clean air while the
lower half (B) gives an over-rich fuel/air mix-
ture. By leading the fuel-air mixture and the
clean air in separate flushing channels into
the cylinder, the proportions of the air-fuel
mixture and clean air can be controlled so
that these vary in different phases of the
engine's work cycle.
Cleaner exhaust fumes and improved
performance
The amount of uncombusted hydrocarbons
(HC) is reduced by the Dual Charge techno-
logy to about half compared with a tradi -
tional design. The emission values are now
well below levels in the regulations from
EPAII.
The output is higher over the entire speed
range and the torque in the lower speed range
is now significantly higher.
Lower vibration levels
The fuel tank is integrated in the handle unit,
which means lower handle vibrations through
the greater weight. A redesigned vibration
dampening element gives lower vibration
levels, compared to the forerunner K950.
Poly-V belt
This type of belt has improved strength and
is more resilient against stretching than pre-
vious V-belts, which results in longer intervals
between adjustments. Friction losses are also
less.
Friction Retarder
A new front belt pulley is being introduced in
2007 with a braking mechanism that takes
effect at low speeds.
Torx – T27
Torx screws, with the dimensions T27, are
used virtually throughout to simplify the ser-
vice work.
Note that screws with both a flat and fluted
undersides are used.
2
3