Echo cs-520 User Manual

OPTIONAL ATTACHMENTS & A CCESSORIES

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

Table of Contents Part Number Index

Table of Contents

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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Table of Contents Part Number Index

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

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Table of Contents Part Number Index

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

REMARKSDESCRIPTIONQTYPART NUMBERITEM LID, CLEANER1P0210071501 KNOB, AIR CLEANER LID1A2350000002 PLUG1130338324303 COVER, CYLINDER1A1600002024 SCREW 53163890383305 DEFLECTOR, HEAT1101520354306 GASKET, INTAKE1130016399307 ADAPTER, INTAKE1130510399328 SCREW 5X122900238050129

INCLUDES 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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Table of Contents Part Number Index

CS-520 Chain Saw Carburetor -- WT-594

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Table of Contents Part Number Index

CS-520 Chain Saw Carburetor -- WT-594

REMARKSDESCRIPTIONQTYPART NUMBERITEM CARBURETOR -- WT-5941A0210002200 SCREW, METERING DIAPHRAGM

4123130029601

COVER COVER, METERING DIAPHRAGM1123142039302

1------------------3

BODY, CARBURETOR SHAFT, CHOKE1P0030001504 WASHER1123149260305 LEVER, FAST IDLE1P0030001606 SPRING, CHOKE RETURN1P0030001407 SCREW, CHOKE VALVE1123114039308 VALVE CHOKE1P0030002309 CLIP, 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

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

DIAPHRAGM, METERING1------------------38 GASKET, METERING DIAPHRAGM1------------------39 DIAPHRAGM, FUEL PUMP1------------------40 GASKET, FUEL PUMP1------------------41

INCLUDES ITEMS 27-36REPAIR KIT1P00300025026

INCLUDES ITEMS 38-41GASKET/DIAPHRAGM KIT1P00300024037

Footnotes

1: NOT AVAIABLE SEPARATELY

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Table of Contents Part Number Index

CS-520 Chain Saw Exhaust

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Table of Contents Part Number Index

CS-520 Chain Saw Exhaust

REMARKSDESCRIPTIONQTYPART NUMBERITEM

INCLUDES ITEMS 2-5MUFFLER ASY1P0210065911 GASKET, EXHAUST1145510354312 SCREEN1145884393303 GUIDE, EXHAUST1A3030000504 SCREW 4X82900250040085 SCREW 4X61900105040066 PLATE1145711606317 SCREW 5X142900105050148

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Table of Contents Part Number Index

CS-520 Chain Saw Starter

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Table of Contents Part Number Index

CS-520 Chain Saw Starter

REMARKSDESCRIPTIONQTYPART NUMBERITEM SCREW 5X184900238050181

INCLUDES ITEMS 3-12STARTER ASY1177200393352 LABEL - ECHO1X5020000103 GUIDE, ROPE1177227379304 SCREW 3X141900296030145 GRIP, STARTER1177228354306 SPRING, REWIND1177220354307 PLATE, STARTER1177221383308 DRUM, STARTER1177215383309

REPOWER BULK OPTION: 99944445000ROPE, STARTER - 3.5X960mm11772263833010 WASHER11772140283011 SCREW 5X1219002380501212 COVER, FAN1A17200006213 SCREW 5X142V20300009014 WASHER 529006030000515 PAWL, STARTER21772181983016 SPACER21772470463017 SPRING, RETURN21772343543018

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