Husqvarna 165R Instruction manual

Technical data
Service data
Special tools
Fuel system, carburettor
Electrical system
Cylinder, piston
Crankcase, crankshaft
Starter
Handlebars, controls
Engine mounting, drive shaft
Transmission system

Ignition system
Ignition advance
Sparking plug
Sparking plug gap
Ca
r
bu
r
e
tt
o
r
Fuel tank capacity
Harness
Saw blade
Shaft angle
Weight
Grease
Classification table
SEM, type GA2
24° b t d c at 142 r/s (8500 r/mm)
Bosch WS7F, Champion CJ7Y
0.5mm
Tlllotson diaphragm carburettor type HS 121 A
Basic setting
H = 3/3 turn
L=1turn
1.0 litre petrol admixture
Fuel mixture 4% (1:25) oil
With Husqvarna Twostroke Oil 2% (1:50)
Husqvarna, type BU 75
Husqvarna, type Maxi 9“
110°
10.8kg
Empty clearing saw without harness and transit protection
for saw blade
EP 0 grease or Husqvarna special grease,
order number 502 51 27-01
Cylinder class Piston class
A A
B B
C C
If absolutely necessary,
a class A piston may be
used with a class B
cylinder.
NOTE:
A class B piston must not be used with a class A
cylinder nor a class C piston with a class
B cylinder
1
:
1

Leakage testing
Pressure: 0.08 MPa (0.8 kgf/cm2)
Max. leakage: 0.02 MPa per 30 see
(0.2 kgf/cm2 per 30 sec. )
Tools: 502 50 38-01 Pressure tester
502 50 45-01 Spacer sleeve (35 mm)
502 50 47-01 Sealing plate, inlet
502 50 48-01 Sealing plate, exhaust
Starter
It should be possible to turn the cord pulley about
another half-turn when the starter cord 15 fully with-
drawn.
Carburettor
Pressure: 0.03 MPa (0.3kgf/cm2, 4.3 psi)
Leakage: No leakage permitted
Tools: 502 50 38-01 Pressure tester
502 50 45-01 Spacer sleeve (35 mm)
502 50 47-01 Sealing plate, inlet
502 50 48-01 Sealing plate, exhaust
2:1

Fuel mixture
The engine is of two-stroke type and receives lubrica-
tion through the addition of oil to the petrol certain
proportions For ordinary two-stroke oil a mixture of 1
part oil to 25 parts petrol (4°/0) is recommended.
For premixed two-stroke oil a mixture of 1 part oil to 20
parts petrol (5%) is recommended.
For Husqvarna Two-stroke Oil a mixture of 1 part oil to
50 parts petrol (2%) is recommended.
The table below shows the different mixture proportions.
Mixture table
Litres For 2% For 4YO For SO
of petrol mixture mixture mixture
Litres of oil Litres of oil Litres of oil
5 0.1 0.2 0.25
10 0.2 0.4 0.50
15 0.3 0.6 0.75
20 0.4 0.8 1.00
25 0.5 1.0 1.25
2:2

2:3

502 50 06-01
Pliers, sparking
plug cover
502 50 18-01 NV 4 mm
502 50 18-01 NV 3 mm
502 50 64-01 NV 5 mm
T-type Allen key
502 50 20-01 (M5)
Stud tightener
502 50 22-01 NV 8 mm
502 50 23-01 NV 10 mm
Nut driver
502 50 25-01
Holdfast, complete
502 50 26-01
Puller, complete with screw
520 50 36-01
Tachometer
502 50 37-01
Vacuum tester, complete
502 50 38-01
Pressure tester, complete
502 50 42-01
Lithium grease, 250 g
502 50 45-01
Spacer sleeve, 35 mm
502 50 47-01
Sealing plate, inlet
502 50 48-01
Sealing plate, exhaust
502 50 49-01
Pliers, centrifugal
clutch
3:1

3:2
502 50 50-01
Repair kit for electric
leads
502 50 51-01
Crimping pliers
502 50 53-01
Sealing ring assembly
socket
502 50 63-01
Extractor, angle
gear
502 50 65-01 (M10)
Puller, gear shaft
502 50 70-01
Piston assembly kit,
complete
502 50 78-01
Extractor, sealing ring
502 50 79-01
Sealing ring assembly
sleeve
502 50 83-01
Hook for tank weight
502 50 86-01 NV 3 mm
502 50 87-01 NV 4 mm
502 50 88-01 NV 5 mm
Socket driver with ball
502 50 90-01
Jet-Pac spray gun, complete
with touch-up paint
502 50 91-01
Touch-up paint, orange
1/8 litre
502 50 92-01
Propellant gas for Jet-Pac
502 51 02-01
Assembly Jig
502 51 03-01
Special fixture

502 51 06-01
Glue
502 51 07-01
Epoxy adhesive
502 51 08-01
Loctite AA (normal
locking force)
502 51 09-01
Loctite AAV (high
locking force)
502 51 24-01
SEM ignition system tester
502 70 04-01 (M12)
Screw for puller
3:3

Dismantling the carburettor
Clamp the cleanse saw in fixture No 502 51 03-01.
Remove the cylinder casing and blow as much dirt as
possible away from the area round the carburettor,
using compressed air
Remove the sparking plug cover and air cleaner Do not
yet remove the plastic sleeve over the carburettor adju-
sting screws as this is held in place by a nail
Close the choke flap to prevent dirt from entering the
cylinder Disconnect the fuel line and back off the two
nuts (nut driver No 502 50 22-01) holding the carburet-
tor place.
Open the choke flap and pull the carburettor straight
out to the rear.
Remove the small nail holding the plastic sleeve in position
over the adjusting screws and remove the sleeve.
Clean the outside of the carburettor.
Back off the four screws holding the diaphragm cover in
place and remove the cover Remove the diaphragm
Note that the centre stud of the diaphragm enters a
fork-shaped opening in the needle valve lever
Connect pressure tester No 502 50 38-01 to the fuelinlet
on the carburettor and pump it up to a pressure of
0 03 MPa (0 3 kgf/cm2)
Check whether any leakage occurs at the needle valve
or at the gasket on the pump side Leakage points can
most easily be located by dripping petrol onto the places
where leakage is suspected.
Back off the screw holding the shaft on which the lever
pivots and remove lever, shaft, spring and needle valve
4:1