Specifications; Engine; Fuel System - Stihl 020 T Service Manual

1.

SPECIFICATIONS

1.1

Engine

1.2

Fuel System

STIHL 020 T
STIHL single-cylinder two-stroke engine with special
impregnated cylinder bore
Displacement:
Bore:
Stroke:
Compression ratio:
Power output:
Max. torque:
Max. permissible engine
speed with bar and chain:
Mean idle speed:
Bearings:
Piston pin diameter:
Connecting rod length:
Rewind starter:
Reserve pull on rope rotor:
Starter rope:
Clutch:
Diameter:
Clutch engages at:
Crankcase leakage
test
at gauge pressure:
under vacuum:
Carburetor:
Standard setting
High speed adjusting screw H:
Low speed adjusting screw L:
Carburetor leakage test
at gauge pressure:
Fuel tank capacity:
Octane number:
Fuel mixture:
Mix ratio:
Air filter:
3
35.2 cm (2.15 cu.in)
40 mm (1.57 in)
28 mm (1.10 in)
7.41:1
1.6 kW (2.2 bhp)
1.8 Nm (1.3 Ib.ft)
at 7,500 r.p.m.
14,000 r.p.m.
2,800 r.p.m.
Crankshaft supported in heavy-
duty roller bearings, needle
cages on small and big ends
9 mm (0.35 in)
49 mm (1.93 in)
Pawl system
min. 1/2 turn
3.0 mm (0.12 in) dia., 800 mm
(31.5 in) long
Centrifugal clutch without linings
66 mm (2.60 in)
3,900 r.p.m.
0.5 bar (7.25 psi)
0.5 bar (7.25 psi)
Diaphragm carburetor
Back off approx. 1 turn
Back off approx. 1 turn
0.4 bar (5.8 psi)
0.37 I (0.8 US pt)
mind. 90 RON (USA/CAN: pump
octane min. 87 unleaded)
Regular brand-name gasoline
and two-stroke engine oil
50:1 with Stihl two-stroke
engine oil
25:1 with other brand-name
two-stroke, air-cooled
engine oils
Dual-ply synthetic fabric
or flocked wire mesh element
and foam element
3