OPTIONAL ATTACHMENTS & A CCESSORIES
Accessories
99944100025 Rain Gutter Kit
99944200300 Yard Shield
PARTS CATALOG
PB-251 Power Blower
RePower Maintenance Kits
90107 Tune-Up Kit
25.4cc
MODEL:SERIAL NUMBERS
PB-251: S/N: 09001001 - 09999999
ECHO, INCORPORATED
400 Oakwood Road Lake Zurich, Illinois 60047 USA
WWW.ECHO-USA.COM
99922203923
©2010 ECHO Incorporated, RePower is Registered Trademark of ECHO Incorporated. All Rights Reserved REVISED 12/29/10
Table of Contents Part Number Index
Table of Contents
Click Any Diagram Description Below To View That Diagram.
PB-251 S/N: 09001001 - 09999999
Fuel System.....................................................................................................................................................................4
Starter...............................................................................................................................................................................6
Intake................................................................................................................................................................................8
Carburetor -- RB-K85.....................................................................................................................................................10
Exhaust...........................................................................................................................................................................12
Handle, Switch,Throttle Cable......................................................................................................................................14
Blower Tubes..................................................................................................................................................................16
Fan Housing...................................................................................................................................................................18
Ignition, Cylinder Cover................................................................................................................................................20
Engine, Short Block - SB1092......................................................................................................................................22
Labels.............................................................................................................................................................................24
Gasket Kit -- P021012350..............................................................................................................................................26
Part Number Index.........................................................................................................................................................28
Part Description Index..................................................................................................................................................29
99922203923 - 2 - REVISED 12/29/10
This Page Intentionally Left Blank
- 3 -
Table of Contents Part Number Index
PB-251 Power Blower Fuel System
99922203923 - 4 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Fuel System
REMARKSDESCRIPTIONQTYPART NUMBERITEM
TANK, FUEL1A3500005101
SCREW 5X20 - TAPPING2900253050202
WASHER2900603000053
CUSHION1V4200014304
GROMMET1132115443305
REPOWER BULK OPTION: 90017PIPE, RETURN - 3X6X85mm1132010497306
REPOWER BULK OPTION: 90014PIPE, FUEL - 3X5X175mm1V4710018607
CLIP2132013098208
FILTER, FUEL1131205073209
VENT ASY1A35600003010
REPOWER BULK OPTION: 90014PIPE, VENT - 3X5X50mm1V47100122011
GROMMET11321150146112
INCLUDES ITEMS 14-15CAP ASY - ORANGE11310045553013
GASKET, CAP11310165583014
CONNECTOR, CAP11310515603015
99922203923 - 5 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Starter
99922203923 - 6 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Starter
REMARKSDESCRIPTIONQTYPART NUMBERITEM
INCLUDES ITEMS 2-3SPACER ASY1V3760009001
FLANGE NUT 51V2630000702
SCREW 4X164900163040163
INCLUDES ITEMS 5-7STARTER PAWL ASY1A0520002004
E-RING 42900700000045
SPRING, RETURN2177234122206
PAWL2P0220068507
INCLUDES ITEMS 9-15STARTER, RECOIL1A0510010608
SCREW1177236443309
RETAINER11772461112010
GRIP, STARTER11772282703011
GUIDE, ROPE11772274203012
REPOWER BULK OPTION: 99944440000ROPE, STARTER - 3X700mm1P02200826013
PULLEY11772154443014
SPRING, REWIND11772204203015
CUSHION1V42000144016
SCREW 5X1439001060501417
99922203923 - 7 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Intake
99922203923 - 8 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Intake
REMARKSDESCRIPTIONQTYPART NUMBERITEM
THUMB SCREW1V2990002501
WASHER1131911034602
LID, AIR CLEANER1A2320003403
1A2260004704
FILTER, AIR - DOUBLE LAYER
PLATE, PREVENT1A2440000706
SCREW 5X602900105050607
AIR CLEANER CASE ASY1P0210109808
1130016420319
GASKET, INTAKE
GUIDE, CABLE1C48000007010
NUT 61V26400005011
1V10300040012
GASKET, INTAKE
INSULATOR1A20000028013
SCREW 5X2529001620502514
1V10300039015
GASKET, INTAKE
1: Also Included In REPOWER TUNE-UP
2: Also Included In Gasket Kit
2
2
2
1
OPTIONALFILTER, AIR - SINGLE LAYER1A2260003505
See Carburetor Diagrams For Additional InformationCARBURETOR1------------------16
Footnotes
99922203923 - 9 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Carburetor -- RB-K85
99922203923 - 10 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Carburetor -- RB-K85
REMARKSDESCRIPTIONQTYPART NUMBERITEM
CARBURETOR -- RB-K851A021001350
ROTOR COVER ASY1P0050020001
SCREW, ROTOR COVER3125344139312
SWIVEL1P0050012403
E-RING1P0050001904
SCREW, THROTTLE ADJUST1P0050001005
PLUG1P0050012706
O-RING1P0050002807
1------------------8
BODY, CARBURETOR
PLUG1P0050012709
NEEDLE - HIGH SPEED1P00500126010
PURGE BASE ASY1P00500189011
SCREW, PURGE BASE ASY1P00500027012
BULB, PURGE11253810866013
RETAINER, PURGE BULB1P00500025014
SCREW, RETAINER4P00500190015
COVER, DIAPHRAGM11253425213016
SCREW, DIAPHRAGM COVER21253445213017
SCREW, METERING LEVER PIN11253394203018
ROLLER, GUIDE1P00500100020
PIN, METERING LEVER1------------------21
VALVE, INLET NEEDLE1------------------22
LEVER, METERING1------------------23
SPRING, METERING LEVER1------------------24
STRAINER1------------------25
DIAPHRAGM, PUMP1------------------26
GASKET, PUMP1------------------27
GASKET, METERING DIAPHRAGM1------------------28
DIAPHRAGM, METERING1------------------29
DIAPHRAGM, PUMP1------------------31
GASKET, PUMP1------------------32
GASKET, METERING DIAPHRAGM1------------------33
DIAPHRAGM, METERING1------------------34
1
INCLUDES ITEMS 21-30REPAIR KIT1P00500167019
INCLUDES ITEMS 32-35DIAPRAGM/GASKET KIT1P00500166030
Footnotes
1: NOT AVAILABLE SEPARATELY
99922203923 - 11 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Exhaust
99922203923 - 12 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Exhaust
REMARKSDESCRIPTIONQTYPART NUMBERITEM
SCREW 5X142900106050141
COVER, EXHAUST1A3200004102
SCREW 4X12591367040123
GUIDE, EXHAUST - OUTER1A3130008504
GUIDE, EXHAUST - INNER1A3130008405
INCLUDES ITEM 7EXHAUST GUIDE KIT1P0210169306
GUIDE, EXHAUST1A3130010707
1V1040009408
1V10400082013
1: Also Included In Gasket Kit
GASKET, EXHAUST
SCREEN1A3100000709
BOLT 52V20300019010
WASHER29006030000511
MUFFLER1A30000014112
SHIELD, EXHAUST
1
1
Footnotes
99922203923 - 13 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Handle, Switch,Throttle Cable
99922203923 - 14 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Handle, Switch,Throttle Cable
REMARKSDESCRIPTIONQTYPART NUMBERITEM
COVER, HANDLE1C4110000101
SCREW 5X20 - TAPPING3900253050202
SCREW 5X251900253050253
SCREW 5X251900238050254
WASHER1900603000055
LEVER, THROTTLE1C4530002606
WASHER1900603000057
FLANGE NUT 51900562500058
TRIGGER, THROTTLE1C4500002409
ROD, THROTTLE1C45400013010
CABLE, THROTTLE1V43100000011
INCLUDES ITEMS 13-14IGNITION SWITCH ASY1A44000077012
SCREW 3X101915450301013
KNOB1A44400002014
TERMINAL, GROUND1V48600007015
LEAD, GROUND1V48500083016
FLANGE NUT 51V26300007017
HANDLE, UPPER1C40000047118
COVER, THROTTLE1C45900001019
COVER, ENGINE1A16000083020
99922203923 - 15 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Blower Tubes
99922203923 - 16 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Blower Tubes
REMARKSDESCRIPTIONQTYPART NUMBERITEM
TUBE, BLOWER - NOZZEL1E1650001701
TUBE, BLOWER - STRAIGHT1E1650001802
99922203923 - 17 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Fan Housing
99922203923 - 18 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Fan Housing
REMARKSDESCRIPTIONQTYPART NUMBERITEM
GUARD, FAN1E1040000801
SCREW 5X20 - TAPPING14900253050202
CLAMP2E1620000003
CASE, FAN1E1030004614
BOLT 8X141900100080145
WASHER1100143198306
FAN1E1000000707
CASE, FAN1E1030004518
SCREW 4X204900162040209
HANDLE, LOWER - INNER1C41000039010
HANDLE, LOWER - OUTER1C41000040011
99922203923 - 19 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Ignition, Cylinder Cover
99922203923 - 20 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Ignition, Cylinder Cover
REMARKSDESCRIPTIONQTYPART NUMBERITEM
COIL, IGNITION1A4110002901
BOLT291113040202
INSULATOR1V4750033803
CAP, SPARK PLUG1A4270000134
COVER, DUST1A4290000105
TERMINAL, SPARK PLUG CAP1A4260000106
1159010198307
SPARK PLUG -- BPM-8Y
1A4250000008
SPARK PLUG -- BPMR-8Y
BUSHING1156110049209
LEAD, IGNITION1V48500082010
BUSHING11521150553011
FLYWHEEL1A40900021012
HUB, FAN1E10100007113
COVER, CYLINDER1A16000082014
SCREW 5X829001060500815
1: Also Included In REPOWER TUNE-UP KIT
1
1
Footnotes
CANADA MODELS
99922203923 - 21 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Engine, Short Block - SB1092
99922203923 - 22 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Engine, Short Block - SB1092
REMARKSDESCRIPTIONQTYPART NUMBERITEM
INCLUDES ITEMS 2-21SHORT BLOCK - SB10921SB10921
SCREW 5X254900162050252
CYLINDER1A1300007803
1V1000001904
GASKET, CYLINDER
RING, PISTON1A1010001406
PIN, PISTON1V6060000007
CIRCLIP, PISTON PIN2100015046308
SPACER, PISTON PIN2100014115209
BEARING, NEEDLE 81V55300001010
CRANKSHAFT ASY1A01100037111
OIL SEAL21002124203113
DOWEL PIN2V62200002014
BEARING, BALL - 62012940353620115
11002424203016
GASKET, CRANKCASE
SCREW 5X2839001620502817
1------------------18
SHIELD, EXHAUST
1------------------19
GASKET, INTAKE
1------------------20
GASKET, INTAKE
1------------------21
GASKET, INTAKE
1
INCLUDES ITEMS 6-9PISTON KIT1P0210102605
INCLUDES ITEMS 13-17CRANKCASE KIT1P02100823112
1
1
1
1
1
SEE PAGE "Exhaust"
SEE PAGE "Intake"
SEE PAGE "Intake"
SEE PAGE "Intake"
1: Also Included In Gasket Kit
Footnotes
99922203923 - 23 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Labels
99922203923 - 24 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Labels
REMARKSDESCRIPTIONQTYPART NUMBERITEM
LABEL - CAUTION -- HOT1X5050023101
LABEL - SPARK PLUG -- BPM-8Y1X5320006712
CANADA MODELSLABEL - SPARK PLUG -- BPMR-8Y1X5320007203
LABEL - MODEL -- PB-2511X5030081604
LABEL, ECHO1X5020003305
LABEL, CHOKE1X5060000806
CANADA MODELSLABEL, CHOKE1X5060000907
LABEL, NOISE1X5080001208
LABEL, CAUTION1X5050020809
LABEL - MODEL -- PB-2511X54700052010
99922203923 - 25 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Gasket Kit -- P021012350
99922203923 - 26 - REVISED 12/29/10
Table of Contents Part Number Index
PB-251 Power Blower Gasket Kit -- P021012350
REMARKSDESCRIPTIONQTYPART NUMBERITEM
GASKET KIT1P0210123501
99922203923 - 27 - REVISED 12/29/10
Table of Contents Part Number Index
Part Number Index
Click The Page Number After Any Part Number To View The Diagram Containing That Part.
PagePart Number
PagePart Number
PagePart Number
9, 11, 23------------------ .............
2310001411520 ............
2310001504630 ............
1910014319830 ............
2310021242031 ............
2310024242030 ............
1112533942030 ............
1112534252130 ............
1112534413931 ............
1112534452130 ............
1112538108660 ............
913001642031 ............
513100455530 ............
513101655830 ............
513105156030 ............
513120507320 ............
913191103460 ............
513201049730 ............
513201309820 ............
513211501461 ............
513211544330 ............
2115211505530 ............
2115611004920 ............
2115901019830 ............
717721544430 ............
717722042030 ............
717722742030 ............
717722827030 ............
717723412220 ............
717723644330 ............
717724611120 ............
1990010008014 ............
990010505060 ............
2190010605008 ............
7, 1390010605014 ............
1990016204020 ............
9, 2390016205025 ............
2390016205028 ............
790016304016 ............
1590023805025 ............
5, 15, 1990025305020 ............
1590025305025 ............
1590056250005 ............
5, 13, 1590060300005 ............
790070000004 ............
219111304020 ..............
139136704012 ..............
159154503010 ..............
239403536201 ..............
23A011000371 ..............
11A021001350 ..............
7A051001060 ..............
7A052000200 ..............
23A101000140 ..............
23A130000780 ..............
21A160000820 ..............
15A160000830 ..............
9A200000280 ..............
9A226000350 ..............
9A226000470 ..............
9A232000340 ..............
9A244000070 ..............
13A300000141 ..............
13A310000070 ..............
13A313000840 ..............
13A313000850 ..............
13A313001070 ..............
13A320000410 ..............
5A350000510 ..............
5A356000030 ..............
21A409000210 ..............
21A411000290 ..............
21A425000000 ..............
21A426000010 ..............
21A427000013 ..............
21A429000010 ..............
15A440000770 ..............
15A444000020 ..............
15C400000471 ..............
19C410000390 ..............
19C410000400 ..............
15C411000010 ..............
15C450000240 ..............
15C453000260 ..............
15C454000130 ..............
15C459000010 ..............
9C480000070 ..............
19E100000070 ..............
21E101000071 ..............
19E103000451 ..............
19E103000461 ..............
19E104000080 ..............
19E162000000 ..............
17E165000170 ..............
17E165000180 ..............
11P005000100 ..............
11P005000190 ..............
11P005000250 ..............
11P005000270 ..............
11P005000280 ..............
11P005001000 ..............
11P005001240 ..............
11P005001260 ..............
11P005001270 ..............
11P005001660 ..............
11P005001670 ..............
11P005001890 ..............
11P005001900 ..............
11P005002000 ..............
23P021008231 ..............
23P021010260 ..............
9P021010980 ..............
27P021012350 ..............
13P021016930 ..............
7P022006850 ..............
7P022008260 ..............
23SB1092 ......................
23V100000190 ..............
9V103000390 ..............
9V103000400 ..............
13V104000820 ..............
13V104000940 ..............
13V203000190 ..............
7, 15V263000070 ..............
9V264000050 ..............
9V299000250 ..............
7V376000900 ..............
5V420001430 ..............
7V420001440 ..............
15V431000000 ..............
5V471001220 ..............
5V471001860 ..............
21V475003380 ..............
21V485000820 ..............
15V485000830 ..............
15V486000070 ..............
23V553000010 ..............
23V606000000 ..............
23V622000020 ..............
25X502000330 ..............
25X503008160 ..............
25X505002080 ..............
25X505002310 ..............
25X506000080 ..............
25X506000090 ..............
25X508000120 ..............
25X532000671 ..............
25X532000720 ..............
25X547000520 ..............
99922203923 - 28 - REVISED 12/29/10
Table of Contents Part Number Index
Part Description Index
Click The Page Number After Any Part Desciption To View The Diagram Containing That Part.
A
AIR CLEANER CASE ASY.....9
B
BEARING, BALL - 6201.....23
BEARING, NEEDLE 8.....23
BODY, CARBURETOR.....11
BOLT.....21
BOLT 5.....13
BOLT 8X14.....19
BULB, PURGE.....11
BUSHING.....21
C
CABLE, THROTTLE.....15
CAP ASY - ORANGE.....5
CAP, SPARK PLUG.....21
CARBURETOR.....9
CARBURETOR -- RB-K85.....11
CASE, FAN.....19
CIRCLIP, PISTON PIN.....23
CLAMP.....19
CLIP.....5
COIL, IGNITION.....21
CONNECTOR, CAP.....5
COVER, CYLINDER.....21
COVER, DIAPHRAGM.....11
COVER, DUST.....21
COVER, ENGINE.....15
COVER, EXHAUST.....13
COVER, HANDLE.....15
COVER, THROTTLE.....15
CRANKCASE KIT.....23
CRANKSHAFT ASY.....23
CUSHION.....5, 7
CYLINDER.....23
D
DIAPHRAGM, METERING.....11
DIAPHRAGM, PUMP.....11
DIAPRAGM/GASKET KIT.....11
DOWEL PIN.....23
GASKET, INTAKE.....9, 23
GASKET, METERING DIAPHRAGM.....11
GASKET, PUMP.....11
GRIP, STARTER.....7
GROMMET.....5
GUARD, FAN.....19
GUIDE, CABLE.....9
GUIDE, EXHAUST.....13
GUIDE, EXHAUST - INNER.....13
GUIDE, EXHAUST - OUTER.....13
GUIDE, ROPE.....7
H
HANDLE, LOWER - INNER.....19
HANDLE, LOWER - OUTER.....19
HANDLE, UPPER.....15
HUB, FAN.....21
I
IGNITION SWITCH ASY.....15
INSULATOR.....9, 21
K
KNOB.....15
L
LABEL - CAUTION -- HOT.....25
LABEL - MODEL -- PB-251.....25
LABEL - SPARK PLUG -- BPM-8Y.....25
LABEL - SPARK PLUG -- BPMR-8Y.....25
LABEL, CAUTION.....25
LABEL, CHOKE.....25
LABEL, ECHO.....25
LABEL, NOISE.....25
LEAD, GROUND.....15
LEAD, IGNITION.....21
LEVER, METERING.....11
LEVER, THROTTLE.....15
LID, AIR CLEANER.....9
M
MUFFLER.....13
PURGE BASE ASY.....11
REPAIR KIT.....11
RETAINER.....7
RETAINER, PURGE BULB.....11
RING, PISTON.....23
ROD, THROTTLE.....15
ROLLER, GUIDE.....11
ROPE, STARTER - 3X700mm.....7
ROTOR COVER ASY.....11
SCREEN.....13
SCREW.....7
SCREW 3X10.....15
SCREW 4X12.....13
SCREW 4X16.....7
SCREW 4X20.....19
SCREW 5X14.....7, 13
SCREW 5X20 - TAPPING.....5, 15, 19
SCREW 5X25.....9, 15, 23
SCREW 5X28.....23
SCREW 5X60.....9
SCREW 5X8.....21
SCREW, DIAPHRAGM COVER.....11
SCREW, METERING LEVER PIN.....11
SCREW, PURGE BASE ASY.....11
SCREW, RETAINER.....11
SCREW, ROTOR COVER.....11
SCREW, THROTTLE ADJUST.....11
SHIELD, EXHAUST.....13, 23
SHORT BLOCK - SB1092.....23
SPACER ASY.....7
SPACER, PISTON PIN.....23
SPARK PLUG -- BPM-8Y.....21
SPARK PLUG -- BPMR-8Y.....21
SPRING, METERING LEVER.....11
SPRING, RETURN.....7
SPRING, REWIND.....7
STARTER PAWL ASY.....7
STARTER, RECOIL.....7
STRAINER.....11
SWIVEL.....11
R
S
E
E-RING.....11
E-RING 4.....7
EXHAUST GUIDE KIT.....13
F
FAN.....19
FILTER, AIR - DOUBLE LAYER.....9
FILTER, AIR - SINGLE LAYER.....9
FILTER, FUEL.....5
FLANGE NUT 5.....7, 15
FLYWHEEL.....21
G
GASKET KIT.....27
GASKET, CAP.....5
GASKET, CRANKCASE.....23
GASKET, CYLINDER.....23
GASKET, EXHAUST.....13
99922203923 - 29 - REVISED 12/29/10
NEEDLE - HIGH SPEED.....11
NUT 6.....9
OIL SEAL.....23
O-RING.....11
PAWL.....7
PIN, METERING LEVER.....11
PIN, PISTON.....23
PIPE, FUEL - 3X5X175mm.....5
PIPE, RETURN - 3X6X85mm.....5
PIPE, VENT - 3X5X50mm.....5
PISTON KIT.....23
PLATE, PREVENT.....9
PLUG.....11
PULLEY.....7
N
O
P
TANK, FUEL.....5
TERMINAL, GROUND.....15
TERMINAL, SPARK PLUG CAP.....21
THUMB SCREW.....9
TRIGGER, THROTTLE.....15
TUBE, BLOWER - NOZZEL.....17
TUBE, BLOWER - STRAIGHT.....17
VALVE, INLET NEEDLE.....11
VENT ASY.....5
WASHER.....5, 9, 13, 15, 19
T
V
W
ECHO, INCORPORATED
400 Oakwood Road
Lake Zurich, IL 60047 USA
WWW.ECHO-USA.COM
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