Instruction Manual

BR 450, BR 450 C
English
24
Definitions
1. Straight Nozzle
Aims and widens the airstream.
2. Blower Tube
Directs the airstream.
3. Union Nut
Allows simple adjustment of blower
tube length.
4. Control Handle
Handle on the flexible hose to hold
and direct the tube in the required
direction. Designed to help protect
against static electricity.
5. Start Switch
Engages the eletric starter.
6. Throttle Trigger
Controls the speed of the engine.
7. Setting Lever
For run and stop. Sets the throttle to
various positions or stops the
engine.
8. Quick-Release Clamp
For adjusting the position of the
Control Handle.
9. Pleated Hose
For blowing in the desired direction.
10. Back Padding
Increases carrying comfort.
11. Backplate
Helps protect the back of the user.
12. Harness
For carrying the unit.
13. Carrying Handle
For transporting the unit.
14. Intake Screen
Helps prevent leaves entering
intake.
15. Air Filter Cover
Covers and protects the air filter
element.
16. Carburetor Adjusting Screws
For tuning the carburetor.
17. Manual Fuel Pump
Provides additional fuel feed for a
cold start.
18. Choke Knob
Eases engine starting by enriching
mixture.
19. Starter Grip
The grip of the pull starter, for
starting the engine.
20. Fuel Filler Cap
For closing the fuel tank.
21. Fuel Tank
For fuel and oil mixture.
22. Spark Plug Boot
Connects the spark plug with the
ignition lead.
23. 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.
24. Spacer
Designed to reduce the risk of burns
and fire.
Engine
Ignition System
Electronic magneto ignition
Fuel System
All position diaphragm carburetor with
integral fuel pump
Blowing Performance
Specifications
Single cylinder two-stroke engine
Displacement: 63.3 cc
Bore: 48 mm
Stroke: 35 mm
Idle speed: 3,000 rpm
Engine power to
ISO 7293: 2.9 kW (3.9 bhp)
Spark plug (resistor
type): NGK BPMR 7 A
Electrode gap: 0.5 mm
Fuel tank capacity: 1700 cc (1.7 l)
Blowing force: 28 N
Air velocity: 83 m/s
Air flow rate: 1090 m
3
/h
Maximum air velocity: 99 m/s
Maximum air flow rate
without blower tube
assembly:
1430 m
3
/h