Specifications; Engine - Stihl 029, 039 Service Manual

STIHL 029, 039
1.

SPECIFICATIONS

1.1

Engine

Displacement:
Bore:
Stroke:
Compression ratio:
Power output:
Max. torque:
Max. permissible engine
speed with bar and chain:
Mean idle speed:
Crankshaft:
Crankshaft bearings:
Crankpin dia.:
Big-end bearing:
Conrod length:
Piston pin diameter:
Small-end bearing:
Rewind starter:
Starter rope:
Clutch:
Clutch engages at:
Crankcage leakage test
at gauge pressure:
under vacuum:
029
STIHL single-cylinder two-stroke engine with special
impregnated cylinder bore
3
54.1 cm (3.3 cu.in)
45 mm (1.77 in)
34 mm (1.34 in)
9.5:1
2.70 kW (3.7 bhp)
2.8 Nm (2.1 lb. ft)
at 6,500 r.p.m.
13,000 r.p.m.
2,700 r.p.m.
Three-part,
drop forged
2 ball bearings
14.4 mm (0.55 in)
Needle cage
58 mm (2.28 in)
10 mm (0.39 in)
Needle cage
Pawl system with
automatic rope
rewind mechanism
3.5 mm (0.14 in) dia.,
960 mm (37.8 in) long
Centrifugal clutch
without linings,
76 mm (3.0 in) dia.
approx. 3,500 r.p.m.
0.4 bar (5.8 psi)
0.4 bar (5.8 psi)
039
3
64.1 cm (3.9 cu. in)
49 mm (1.93 in)
34 mm (1.34 in)
10:1
3.20 kW (4.4 bhp)
3.4 Nm (2.5 Ib. ft)
at 6,500 r.p.m.
13,000 r.p.m.
2,700 r.p.m.
Three-part,
drop forged
2 ball bearings
14.4 mm (0.55 in)
Needle cage
58 mm (2.28 in)
10 mm (0.39 in)
Needle cage
Pawl system with
automatic rope
rewind mechanism
3.5 mm (0.14 in) dia.,
960 mm (37.8 in) long
Centrifugal clutch
without linings,
76 mm (3.0 in) dia.
approx. 3,500 r.p.m.
0.4 bar (5.8 psi)
0.4 bar (5.8 psi)
3