Specifications; Engine - Stihl 064 Service Manual

STIHL 064, 066
1.

SPECIFICATIONS

1.1

Engine

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