Stihl 020 T Specifications

Stihl 020 T Chainsaw Specifications

Stihl 020 T Specifications for Stihl 020T chainsaw, Find the specs information for the Stihl chainsaw including engine, fuel ignition system and cutting attachments.

Stihl 020 T Specifications

020T Chainsaw Engine: STIHL single-cylinder two-stroke engine with special impregnated cylinder bore.

Replace carburetor with either Walbro or Zama carbs.

Walbro Carburetor Models: WT-215 , WT-286A , WT-503A

Zama Carburetor Models: C1Q-S11G

Displacement: 35.2 cm3 (2.15
Bore: 40 mm (1.57 in)
Stroke: 28 mm (1.10 in)
Compression ratio: 7.41:1
Power output: 1.6 kW (2.2 bhp)
Max. torque: 1.8 Nm (1.3 Ib.ft)
Max. permissible engine speed with bar and chain: 14,000 r.p.m.
Mean idle speed: 2,800 r.p.m.
Bearings: Crankshaft supported in heavy-duty roller bearings, needle cages on small and big ends. 9 mm (0.35 in)
Piston pin diameter: 49 mm (1.93 in)
Connecting rod length: Pawl system
Rewind starter: min. 1/2 turn
Reserve pull on rope rotor: 3.0 mm (0.12 in) dia., 800 mm
Starter rope: (31.5 in) long
Clutch: Centrifugal clutch without linings
Diameter: 66 mm (2.60 in)
Clutch engages at: 3,900 r.p.m.
Crankcase leakage test
at gauge pressure: 0.5 bar (7.25 psi)
under vacuum: 0.5 bar (7.25 psi)

Fuel System

Carburetor: Diaphragm carburetor
Standard setting High speed screw H: Open approx. 1 turn, Low speed screw L: Open approx. 1 turn.
Carburetor leakage test at gauge pressure: 0.4 bar (4.8 psi)
Fuel tank capacity: 0.37 I (0.8 US pt)
Octane number: min. 90 RON (US/CAN: pump octane min. 87 unleaded)
Fuel mixture: Regular brand-name gasoline and two-stroke engine oil
Mix ratio: 1:50 with STIHL 50:1 two-stroke engine oil, 25:1 with other brand-name
two-stroke, air-cooled engine oils
Air filter: Dual-ply synthetic fabric or flocked wire mesh element and foam element

Ignition System

Type: Electronic magneto ignition (breakerless) with integral trigger unit
Air gap: 0.25 mm (0.010 in)
Ignition timing: 2.0 – 2.8 mm B.T.D.C. at 8,000 r.p.m.
Spark plug (suppressed): Bosch WSR 6 F or NGK BPMR 7 A
Electrode gap: 0.5 mm (0.02 in)
Spark plug thread: M14x1.25
Length of thread: 9.5 mm (0.37 in)

Heat range: 200

Cutting Attachments

Guide bars: Rollomatic
Bar tail: 3005
Bar lengths: 30, 35, 40 and 45 cm (12, 14, 16 and 18 in)
Oilomatic chain: 3/8″ (9.32 mm) Picco-Micro, Optional: 1/4″ (6.35 mm) Rapid-Micro
Chain sprockets: 6-tooth spur sprocket for 3/8″ Picco, Optional:, 7-tooth for 3/8″ Picco, 8-tooth for 1/4″
Chain speed: 18.6 m/s (61 ft/sec) at 10,000 r.p.m. (with 6-tooth 3/8″ P sprocket)
Chain lubrication: Speed-controlled reciprocating oil pump, no oil feed at idle speed. Additional manual oil flow adjustment.
Oil feed rate (adjustable):4.0 – 10.5 cm3/min,0.14 -0.36 fl.oz/min) at 10,000 r.p.m.  
Oil tank capacity: 0.24 I (0.5 US pt)

Special Accessories
For User

STIHL repair kit 1129 900 5000

7-tooth 3/8″ P spur sprocket 1129 640 2050
6-tooth 3/8″ P spur sprocket 1123 640 2005
8-tooth 1/4″ spur sprocket 1129 640 2051
ElastoStart 1128 190 3400

Air filter (flocked) 1129 120 1606

For Service

Carburetor parts kit 1129 007 1060

Gasket kit 1129 007 1050

Spur gear/tensioning screw kit 1129 007 1000

Stihl 020 T Specifications Tightening Torques

Plastoform screws are used for polymer components and “DG” screws for light metal components. These screws form a permanent thread when they are installed for the first time. They can be removed and installed as often as necessary without detrimentally affecting the strength of the screwed assembly, providing the specified tightening torque is observed.
For this reason it is essential to use a torque wrench when adjusting or correcting from the Stihl 020T Specifications.

More Stihl 020 T Specifications information can be found in Carburetor Manuals HERE and a Stihl 020T chainsaw workshop manual HERE. Stihl Parts list HERE a chainsaw search (magnifier icon) at top and bottom of this page, as well as a chainsaw repair help question and answer page HERE.

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