Stihl 064 User Manual

STIHL 064, 066 3
1. SPECIFICATIONS
1.1 Engine 064 066
STIHL single-cylinder two-stroke
engine
Displacement: 85 cm³ (5.2 cu.in) 91.6 cm³ (5.6 cu.in)
Bore: 52 mm (2.05 in) 54 mm (2.12 in)
Stroke: 40 mm (1.6 in) 40 mm (1.6 in)
Compression ratio: 10.0 10.0
Power output: 4.8 kW (6.5 bhp) 5.0 kW (6.8 bhp)
at 9,500 rpm at 9,500 rpm
Max. torque: 5.45 Nm (4.0 Ib.ft) 5.6 Nm (4.1 Ib.ft)
at 6,500 rpm at 6,500 rpm
Cylinder bore: Highly wear-resistant electroplated coating
Max. permissible engine
speed with bar and
chain: 12,000 rpm
Cut-off speed: 13,500 rpm
Mean idle speed: 2,400 rpm 2,400 rpm
Crankshaft: Two-part, drop forged Two-part, drop forged
Crankshaft bearings: 2 deep groove ball bearings 2 deep groove ball bearings
Crankpin diameter: 16 mm (0.63 in) 16 mm (0.63 in)
Big-end bearing: Needle cage Needle cage
Piston pin dia.: 12 mm (0.47 in) 12 mm (0.47 in)
Small-end bearing: Needle cage Needle cage
Conrod length: 68 mm (2.67 in) 68 mm (2.67 in)
Rewind starter: Two-pawl system with automatic starter rope
rewind mechanism
Starter rope: 4.5 mm (0.18 in) dia., length 1000 mm (39.4 in)
Clutch: Centrifugal clutch Centrifugal clutch
without linings, without linings,
82 mm (3.2 in) dia. 82 mm (3.2 in) dia.
Clutch engages at: approx. 3,200 rpm approx. 3,200 rpm
Crankcase leakage test
at gauge pressure: 0.5 bar (7.25 psi) 0.5 bar (7.25 psi)
under vacuum: 0.5 bar (7.25 psi) 0.5 bar (7.25 psi)

Stihl 064 Specifications

General

Brand	Stihl
Model	064
Category	Chainsaw
Language	English