Operation Manual

44
english
HT 70, HT 75
Engine
EPA:
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
CARB:
The Emission Compliance Period used
on the CARB Air Index Label indicates
the terms:
Extended = 300 hours,
Intermediate = 125 hours,
Moderate = 50 hours
Engine
Ignition System
Fuel System
Carburetor: All position diaphragm
carburetor with integral fuel pump
Cutting Attachment
Weight
Single cylinder two-stroke engine
Displacement: 1.55 cu.in
(25.4 cm
3
)
Bore: 1.34 in (34 mm)
Stroke: 1.10 in (28 mm)
Engine power to
ISO 8893: 1.3 bhp
(0.95 kW)
Idle speed: 3.000 rpm
Specifications
Type: Electronic
magneto ignition
Spark plug
(suppressed): NGK CMR 7 A
Electrode gap: 0.02 in (0.5 mm)
Spark plug thread: M 14 x 1.25;
0.37 in long
(9.5 mm)
Air filter: Foam element
and metal screen
Fuel tank capacity: 0.92 US pt
(0.44 l)
Fuel mix: See “Fuel”
Guide bar
- Type: Rollomatic with
sprocket nose
- Part No. 3005 000 3905
- Bar length: 12" (30 cm)
Oilomatic chain
- Type: Picco Micro Mini
- Chain pitch: 3/8"P (9.32 mm)
- Drive link gauge: 0.04 in (1.1 mm)
- Part No. 3987 000 0044
Chain sprocket
- Type: Spur sprocket
- Chain pitch: 3/8"P (9.32 mm)
- No. of teeth: 6
7 (special
accessories)
Chain lubrication
Fully automatic speed-controlled rotary
piston oil pump.
Oil tank capacity: 0.22 l
(0.46 US pt)
without bar and
chain, empty tanks:
HT 70 11.2 lbs (5.1 kg)
HT 75 15.4 lbs (7.0 kg)