Owner's Manual

HT 250
English
40
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
Engine
STIHL single cylinder four-stroke engine
with mixture lubrication
Ignition System
Electronic magneto ignition
(breakerless)
Fuel System
All position diaphragm carburetor with
integral fuel pump
Chain lubrication
Fully automatic, speed-controlled oil
pump with rotary piston
Weight
Cutting Attachment
Rollomatic guide bars
3/8" Picco chain
Chain sprocket
Please ask your STIHL dealer for the
latest recommendations on new
bar/chain combinations developed after
publication of this instruction manual.
Specifications
A = 300 hours
B = 125 hours
C = 50 hours
Displacement: 2.45 cu. in.
(40.2 cm
3
)
Bore: 1.57 in. (40 mm)
Stroke: 1.26 in. (32 mm)
Engine power to
ISO 8893:
2.1 hp (1.6 kW)
at 9,000 rpm
Idle speed: 2,800 rpm
Max. output shaft
speed (chain
sprocket): 12,300 rpm
Cut-off speed (rated): 12,300 rpm
Spark plug (resistor
type): NGK BPMR 7 A
Electrode gap: 0.02 in. (0.5 mm)
Fuel tank capacity: 21.6 fl.oz
(0.640 l)
Oil tank capacity: 7.4 fl.oz (0.22 L)
dry, without bar and chain:
HT 250: 13.4 lbs (6.1 kg)
Cutting length: 12, 14 in. (30,
35 cm)
Pitch: 3/8" (9.32 mm)
Groove width: 0.043" (1.1 mm)
Nose sprocket: 7-teeth
Picco Micro Mini Comfort 3
(61 PMMC3)
Pitch: 3/8" P
(9.32 mm)
Drive link gauge: 0.043" (1.1 mm)
6-tooth for 3/8" (rim sprocket)
7-tooth for 3/8" (rim sprocket)