Echo Cs-520 Instruction Manual

OPTIONAL ATTACHMENTS & ACCESSORIES

Accessories

103942147 CS Carry Bag

89850308032 Bar & Chain Cover - 17"

89850308033 Bar & Chain Cover - 20"

99988800207 CS Removable Nose Case

99988800308 CS Lanyard Strap w_Ring

99988801205 CS Fixed Nose Case

Guide Bars

16A0MD3366 Guide Bar - 16" (.050" Ga) -- Micro-Lite Pro

18A0MD3372 Guide Bar - 18" (.050" Ga) -- Micro-Lite Pro

20A0MD3378 Guide Bar - 20" (.050:Ga) -- Micro-Lite Pro

Sawing Chains

95VP66G Sawing Chain - 16" (.050" Ga) -- Micro-Lite

95VP72G Sawing Chain - 18" (.050" Ga) -- Micro-Lite

95VP78G Sawing Chain - 20" (.050" Ga) -- Micro-Lite

PARTS CATALOG

CS-520 Chain Saw

50.1cc

MODEL:SERIAL NUMBERS

CS-520: S/N: C09312001001 - C09312999999

ECHO, INCORPORATED

400 Oakwood Road Lake Zurich, Illinois 60047 USA

WWW.ECHO-USA.COM

99922204144

Click Any Diagram Desciption Below To Veiw That Diagram.

CS-520 S/N: C09312001001 - C09312999999

Cylinder Cover, Intake, Fuel System, Ignition Switch...................................................................................................4

Carburetor -- WT-594........................................................................................................................................................6

Exhaust.............................................................................................................................................................................8

Starter.............................................................................................................................................................................10

Ignition............................................................................................................................................................................12

Chain Brake....................................................................................................................................................................14

Guide Bar, Sawing Chain, Kick Guard.........................................................................................................................16

Clutch.............................................................................................................................................................................18

Handles, Throttle Control..............................................................................................................................................20

Auto-Oiler, Oil Tank........................................................................................................................................................22

Engine, Short Block -- SB1080, Engine Cover............................................................................................................24

Labels.............................................................................................................................................................................26

Tools...............................................................................................................................................................................28

Part Number Index.........................................................................................................................................................30

Part Description Index..................................................................................................................................................31

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CS-520 Chain Saw Cylinder Cover, Intake, Fuel System, Ignition Switch

REMARKSDESCRIPTIONQTYPART NUMBERITEM LID, CLEANER1P0210071501KNOB, AIR CLEANER LID1A2350000002PLUG1130338324303COVER, CYLINDER1A1600002024SCREW 53163890383305DEFLECTOR, HEAT1101520354306GASKET, INTAKE1130016399307ADAPTER, INTAKE1130510399328SCREW 5X122900238050129INCLUDES ITEMS 9-11INSULATOR KIT11300003833110 CUSHION1V42000113011 NUT21300203333012 GASKET, INTAKE11300103833013 See Carburetor Diagram For Additional InformationCARBURETOR1------------------14 PIPE, IMPULSE11301103833015 BRACKET, AIR CLEANER11304053833216 FILTER, AIR11303103833117 ELBOW, CARBURETOR1A20400000418 SCREW 5X5029001620505019 CUSHION11304303833020 BRACKET11638103893321 ROD, THROTTLE1C45400004122 GROMMET11788101453423 ROD, CHOKE1A24100010024 SWITCH, IGNITION11634003833025 TERMINAL, SWITCH11634133893026 GROMMET11321150492027 PIPE, FUEL - SPIRAL11320103833128 CLIP11320132663029 FILTER, FUEL11312051983030 INCLUDES ITEMS 30-31CAP ASY11310043793131 CONNECTOR, CAP1A36500005032 O-RING 2219007200002233

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CS-520 Chain Saw Cylinder Cover, Intake, Fuel System, Ignition Switch

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CS-520 Chain Saw Carburetor --WT-594

REMARKSDESCRIPTIONQTYPART NUMBERITEM CARBURETOR -- WT-5941A0210002200SCREW, METERING DIAPHRAGM

COVER

4123130029601

COVER, METERING DIAPHRAGM1123142039302BODY, CARBURETOR1

1------------------3SHAFT, CHOKE1P0030001504WASHER1123149260305LEVER, FAST IDLE1P0030001606SPRING, CHOKE RETURN1P0030001407SCREW, CHOKE VALVE1123114039308VALVE CHOKE1P0030002309CLIP, CHOKE SHAFT11231271503010 CAP, MIXTURE LIMITER2P00300001011 NEEDLE, HIGH SPEED21231200366112 SHAFT, THROTTLE1P00300048013 SPRING, THROTTLE RETURN11231133753014 SCREW, THROTTLE VALVE11231140393015 VALVE, THROTTLE11231161053016 CLIP, THROTTLE SHAFT11231271503017 LEVER, THROTTLE1P00300013018 SCREW, THROTTLE LEVER11231140393019 SCREW, IDLE ADJUST11231340426020 SPRING, IDLE ADJUST11231330426021 PLUG, FRICTION11231781503022 COVER, FUEL PUMP11231243833023 SCREW, PUMP COVER11231100393024 SCREW, METERING LEVER PIN11231390393025 INCLUDES ITEMS 27-36REPAIR KIT1P00300025026 DIAPHRAGM, METERING1------------------27 GASKET, METERING DIAPHRAGM1------------------28 LEVER, METERING1------------------29 PIN, METERING LEVER1------------------30 PLUG, WELCH1------------------31 SPRING, METERING LEVER1------------------32 VALVE, INLET NEEDLE1------------------33 SCREEN, INLET1------------------34 DIAPHRAGM, FUEL PUMP1------------------35 GASKET, FUEL PUMP1------------------36 INCLUDES ITEMS 38-41GASKET/DIAPHRAGM KIT1P00300024037 DIAPHRAGM, METERING1------------------38 GASKET, METERING DIAPHRAGM1------------------39 DIAPHRAGM, FUEL PUMP1------------------40 GASKET, FUEL PUMP1------------------41

Footnotes

1: NOT AVAIABLE SEPARATELY

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CS-520 Chain Saw Carburetor --WT-594

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CS-520 Chain Saw Exhaust

REMARKSDESCRIPTIONQTYPART NUMBERITEM INCLUDES ITEMS 2-5MUFFLER ASY1P0210065911GASKET, EXHAUST1145510354312SCREEN1145884393303GUIDE, EXHAUST1A3030000504SCREW 4X82900250040085SCREW 4X61900105040066PLATE1145711606317SCREW 5X142900105050148

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CS-520 Chain Saw Exhaust

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CS-520 Chain Saw Starter

REMARKSDESCRIPTIONQTYPART NUMBERITEM SCREW 5X184900238050181INCLUDES ITEMS 3-12STARTER ASY1177200393352LABEL - ECHO1X5020000103GUIDE, ROPE1177227379304SCREW 3X141900296030145GRIP, STARTER1177228354306SPRING, REWIND1177220354307PLATE, STARTER1177221383308DRUM, STARTER1177215383309REPOWER BULK OPTION: 99944445000ROPE, STARTER - 3.5X960mm11772263833010 WASHER11772140283011 SCREW 5X1219002380501212 COVER, FAN1A17200006213 SCREW 5X142V20300009014 WASHER 529006030000515 PAWL, STARTER21772181983016 SPACER21772470463017 SPRING, RETURN21772343543018

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CS-520 Chain Saw Starter

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CS-520 Chain Saw Ignition

REMARKSDESCRIPTIONQTYPART NUMBERITEM COIL, IGNITION1A4110000311SCREW 4X302900162040302LEAD, GROUND1162010383323BOOT, CONNECTOR1C4830000004SCREW 4X61900220040065GROMMET1V1350000106CAP, SPARK PLUG1A4270000127TERMINAL, SPARK PLUG CAP1A4260000108SPARK PLUG -- BPM-7A1159010106309CANADA MODELSSPARK PLUG -- BPMR-8Y1A42500000010 FLYWHEEL1A40900003011 NUT 819005150000812 WOODRUFF KEY11001423083013

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CS-520 Chain Saw Ignition

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CS-520 Chain Saw Chain Brake

REMARKSDESCRIPTIONQTYPART NUMBERITEM INCLUDES ITEMS 2-26CHAIN BRAKE ASY1433100390371INCLUDES ITEMS 3-10BRAKE LEVER ASY1433201390312NUT 42900500000043WEIGHT, BRAKE1433171393304SCREW 4X182900238040185SCREW 5X32191318050326SPACER2433167391307SPRING1433114383318FLANGE NUT 51900562500059PIN 3X2419003303024010 INCLUDES ITEMS 12-16SPROCKET GUARD ASY1P02100128011 GUARD, SPROCKET14330053933412 NOT REQUIREDPLUG1V16200002013 PLATE, SPROCKET GUARD1C30500000114 SCREW 3X619002200300615 SCREW 4X1019002530401016 ADJUSTER, BRAKE14331423543017 WASHER1V30400009018 BAND, BRAKE1C32800006019 SPRING PIN 2.5X1219003422501220 COVER, BRAKE14333103933021 SCREW 4X1019002530401022 STOPPER, BRAKE14332093543023 SPRING, BRAKE14331223543024 COLLAR 5.2X12X1414331153833025 LEVER, BRAKE14332083543126 SPRING PIN 4X8.819003304008827 BOLT 51V20300011028 TENSIONER, CHAIN1C30900003029 COLLAR1V35500027030 GEAR, BEVEL1V65100001131 GEAR, BEVEL1V65100000132 FLANGE NUT 824330191233033 PLATE, GUIDE - INNER14330133543134 SCREW 4X619002200400635 INCLUDES ITEM 32CHAIN CATCHER KIT14330001983136 SCREW 5X1819002200501837 SPIKED BUMPER KIT18802003833038 SCREW 5X1229001050501239

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CS-520 Chain Saw Chain Brake

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CS-520 Chain Saw Guide Bar, Sawing Chain, Kick Guard

REMARKSDESCRIPTIONQTYPART NUMBERITEM KICK GUARD KIT128932011GAUGE: .050"GUIDE BAR - 16" -- MicroLite Pro116A0MD33662GAUGE: .050"GUIDE BAR - 18" -- MicroLite Pro118A0MD33722GAUGE: .050"GUIDE BAR - 20" -- Micro-Lite Pro120A0MD33782GAUGE: .050" / PITCH:.325"SAWING CHAIN - 16" -- Micro-Lite195VP66G3GAUGE: .050" / PITCH:.325"SAWING CHAIN - 18" -- Micro-Lite195VP72G3GAUGE:.050" / PITCH: .325"SAWING CHAIN - 20" -- Micro-Lite195VP78G3

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CS-520 Chain Saw Guide Bar, Sawing Chain, Kick Guard

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CS-520 Chain Saw Clutch

REMARKSDESCRIPTIONQTYPART NUMBERITEM INCLUDES ITEMS 2-5CLUTCH ASY1P0210070701HUB, CLUTCH1A5520000502CLUTCH SHOE SET1P0210070503SPRING, CLUTCH3V4510005004PLATE, CLUTCH1A5510000605DRUM, CLUTCH1A5560000206BEARING, NEEDLE1V5570000107SPROCKET, RIM1175114125308PLATE, CLUTCH1A5510000009

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CS-520 Chain Saw Clutch