Stihl MS 251 Manual De Instrucciones página 60

English
Specifications
EPA / CEPA
The Emission Compliance Period
referred to on the Emissions
Compliance Label indicates the number
of operating hours for which the engine
has been shown to meet Federal
emission requirements.
Category
A = 300 hours
B = 125 hours
C = 50 hours
Engine
STIHL single cylinder two-stroke engine
MS 251, MS 251 C
Displacement: 2.78 cu.in
(45.6 cm
Bore: 1.73 in (44 mm)
Stroke: 1.18 in (30 mm)
Engine power to 3.0 hp (2.2 kW) at
ISO 7293: 9,500 rpm
Idle speed: 2,800 rpm
High speed setting
when performing
repairs (with bar and
chain): 13,000 rpm
Ignition System
Electronic magneto ignition
58
Spark plug (resistor
type):
Electrode gap:
Fuel System
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity:
Chain Lubrication
Fully automatic, speed-controlled oil
pump with rotary piston
Oil tank capacity:
Weight
dry, without bar and chain
MS 251
MS 251 C with quick chain
3
)
adjuster and
Easy2Start:
Cutting Attachment
Recommended cutting attachments
complying with Section 5.11 of ANSI B
175.1-2000.
Observe notes on ANSI B 175.1-2000
and definition of "low kickback chain" in
chapter on "Safety Precautions and
Working Techniques".
Rollomatic E 3/8" P guide bars
NGK CMR6H
Reduced kickback STIHL guide bar
0.02 in (0.5 mm)
(with green label)
Cutting lengths:
Pitch:
Groove width:
Nose sprocket:
13.2 fl.oz (0.39 L)
Rollomatic E .325" guide bars
Reduced kickback STIHL guide bar
(with green label)
Cutting lengths:
Pitch:
6.7 fl.oz (0.2 L)
Groove width:
Nose sprocket:
3/8" P chain
Low kickback STIHL saw chains (with
11.0 lbs
green label)
(4.9 kg)
Picco Micro 3 (63 PM3) Type 3636
Picco Super 3 (63 PS3) Type 3616
11.5 lbs
Picco Duro (63 PD3) Type 3612
(5.2 kg)
Pitch:
Drive link gauge:
.325" saw chains
Low kickback STIHL saw chains (with
green label)
Rapid Micro 3 (26 RM3) Type 3634
Rapid Duro 3 (26 RD3) Type 3667
Pitch:
Drive link gauge:
12, 14, 16, 18 in
(30, 35, 40, 45 cm)
3/8" P (9.32 mm)
0.050 in (1.3 mm)
9-tooth
14, 16, 18 in (35,
40, 45 cm)
.325" (8.25 mm)
0.063 in (1.6 mm)
11-tooth
3/8" P (9.32 mm)
0.050 in (1.3 mm)
.325" (8.25 mm)
0.063 in (1.6 mm)
MS 251, MS 251 C