SERVICE INFORMATION
PB-251
2
1 SERVICE INFORMATION
1-1 Specifications
Dimensions Length*
mm(in)
330 (13.0)
Width*
mm(in)
265 (10.4)
Height
mm(in)
360 (14.2)
Dry weight**
kg(lb)
4.5 (9.9)
Engine
Type
KIORITZ, air-cooled, two-stroke, single cylinder
Rotation
Counterclockwise as viewed from the output end
Displacement
cm
3
(in
3
)
25.4 (1.55)
Bore
mm(in)
34.0 (1.34)
Stroke
mm(in)
28.0 (1.10)
Compression ratio
7.0
Carburetor
Type
Rotary type : Diaphragm, horizontal-draught, with purge bulb
Model
ZAMA RB-K85
Ignition
Type
CDI (Capacitor discharge ignition) system
Variable Slope Timing (VST) : Slope advance ignition
system combined with electronic speed governor
Spark plug
BPM8Y
Exhaust
Muffler type
Spark arrestor muffler with catalyst
Starter
Type
Automatic rewind
Rope diameter x length
mm(in)
3.0 x 815 (1/8 x 32.1)
Fuel
Type
†
Premixed two-stroke fuel
Mixture ratio
50 : 1 (2%)
Gasoline
Minimum 89 octane
Two-stroke engine oil
ISO-L-EGD (ISO/CD13738), JASO M345-FC/FD
Tank capacity
L (U.S.fl.oz.)
0.5 (16.9)
Blower
Fan type
Centrifugal, single stage
Max. air volume (with pipes)
10.9 (386)
m
3
/min ( ft
3
/min)
Max. air velocity (with pipes)
63.5 (142)
m/s (mph)
Discharge ID
††
mm(in)
62 (2.44)
*Without blower pipes **With all blower pipes
†
Refer to Operator’s manual.
††
ID : Inner diameter
Summary of Contents for PB-251
Page 1: ...Ord No 403 16...
