Stihl MM 55 Instruction Manual - Page 27

Specifications

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Definitions 1 Manual Fuel Pump Provides additional fuel feed for a cold start. 2 Carburetor Adjusting Screws For tuning the carburetor. 3 Spark Plug Boot Connects the spark plug with the ignition lead. 4 Starter Grip The grip of the pull starter, for starting the engine. 5 Muffler with Spark Arresting Screen Muffler reduces exhaust noises and diverts exhaust gases away from operator. Spark arresting screen is designed to reduce the risk of fire. 6 Fuel Tank For fuel and oil mixture. 7 Left Handle For holding the unit with the left hand during operation. 8 Control Handle For holding and controlling the unit with the right hand during operation. 9 Throttle Trigger Lockout Must be depressed before the throttle trigger can be activated. 10 Slide Control For starting throttle, run and stop. Keeps the choke partially open during starting and switches off the ignition to stop the engine. 11 Throttle Trigger Controls the speed of the engine. 12 Handlebar For holding and controlling the unit with both hands during operation. 13 Knob Locks the handlebar in the selected position. 14 Throttle Cable Retainer Secures the throttle cable to the frame. 15 Loop Handle For transporting the unit. 16 Fuel Filler Cap For closing the fuel tank. 17 Air Filter Cover Covers and protects the air filter element. 18 Choke Lever Eases engine starting by enriching mixture. 19 Carrying Handle For transporting the unit. 20 Deflector Designed to reduce the risk of injury from foreign objects flung backwards toward the operator by the attachment and from contact with the attachment. 21 Gearbox Transmits power from the engine to the shaft. 22 Shaft Holds the tools in position. 23 Hitch Pin Secures the attachments and simplifies removal and installation of the attachments. Specifications English 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 Single cylinder two-stroke engine Displacement: 1.66 cu. in. (27.2 cm3) Bore: 1.34 in. (34 mm) Stroke: 1.18 in. (30 mm) Engine power to ISO 8893: 1.1 hp (0.8 kW) Idle speed: 2800 rpm Max. engine speed: 8900 rpm Max. output shaft speed (working tool) 200 rpm Ignition system Electronic magneto ignition Spark plug (suppressed): Electrode gap: Bosch WSR 6F, NGK BPMR 7A 0.02 in. (0.5 mm) MM 55, MM 55 C 25

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MM 55, MM 55 C
English
25
Definitions
1
Manual Fuel Pump
Provides additional fuel feed for a
cold start.
2
Carburetor Adjusting Screws
For tuning the carburetor.
3
Spark Plug Boot
Connects the spark plug with the
ignition lead.
4
Starter Grip
The grip of the pull starter, for
starting the engine.
5
Muffler with Spark Arresting Screen
Muffler reduces exhaust noises and
diverts exhaust gases away from
operator.
Spark arresting screen is designed
to reduce the risk of fire.
6
Fuel Tank
For fuel and oil mixture.
7
Left Handle
For holding the unit with the left
hand during operation.
8
Control Handle
For holding and controlling the unit
with the right hand during operation.
9
Throttle Trigger Lockout
Must be depressed before the
throttle trigger can be activated.
10
Slide Control
For starting throttle, run and stop.
Keeps the choke partially open
during starting and switches off the
ignition to stop the engine.
11
Throttle Trigger
Controls the speed of the engine.
12
Handlebar
For holding and controlling the unit
with both hands during operation.
13
Knob
Locks the handlebar in the selected
position.
14
Throttle Cable Retainer
Secures the throttle cable to the
frame.
15
Loop Handle
For transporting the unit.
16
Fuel Filler Cap
For closing the fuel tank.
17
Air Filter Cover
Covers and protects the air filter
element.
18
Choke Lever
Eases engine starting by enriching
mixture.
19
Carrying Handle
For transporting the unit.
20
Deflector
Designed to reduce the risk of injury
from foreign objects flung
backwards toward the operator by
the attachment and from contact
with the attachment.
21
Gearbox
Transmits power from the engine to
the shaft.
22
Shaft
Holds the tools in position.
23
Hitch Pin
Secures the attachments and
simplifies removal and installation of
the attachments.
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
Single cylinder two-stroke engine
Ignition system
Electronic magneto ignition
Specifications
A = 300 hours
B = 125 hours
C = 50 hours
Displacement:
1.66 cu. in.
(27.2 cm
3
)
Bore:
1.34 in. (34 mm)
Stroke:
1.18 in. (30 mm)
Engine power to
ISO 8893:
1.1 hp (0.8 kW)
Idle speed:
2800 rpm
Max. engine speed:
8900 rpm
Max. output shaft
speed (working tool)
200 rpm
Spark plug
(suppressed):
Bosch WSR 6F,
NGK BPMR 7A
Electrode gap:
0.02 in. (0.5 mm)