Echo CS-310 Service Manual
  1. Manuals
  2. Brands
  3. Echo Manuals
  4. Chainsaw
  5. CS-310
  6. Service manual

Echo CS-310 Service Manual

Hide thumbs Also See for CS-310:
Table of Contents

Advertisement

Quick Links

CS-310
Ord. No. 401-33

Advertisement

Table of Contents
loading

Related Manuals for Echo CS-310

Summary of Contents for Echo CS-310

  • Page 1 CS-310 Ord. No. 401-33...
  • Page 2 INTRODUCTION This service manual contains information for ser- vice and maintenance of ECHO CHAIN SAW, model CS-310. For systematic diagnosis, to avoid extra work, time loss and to meet Emission regulation, please refer to “Troubleshooting guide” that describes problems, testing, remedies and references.

  • Page 3: Table Of Contents

    CS-310 TABLE OF CONTENTS Page Page 1 SERVICE INFORMATION ........2 5 CLUTCH SYSTEM ..........38 Specifi cations ...........2 Inspecting clutch parts ........39 Technical data ..........3 Replacing clutch parts ........40 Torque limits .............4 Installing clutch assembly .......40 Special repairing materials .......4 Service Limits ...........5 6 CHAIN BRAKE SYSTEM ........42...

  • Page 4: Service Information

    CS-310 SERVICE INFORMATION 1 SERVICE INFORMATION 1-1 Specifi cations Model CS-310 Dimensions Length* mm(in) 396 (15.59) Width mm(in) 232 (9.13) Height mm(in) 268 (10.55) Dry weight* kg(lb) 4.0 (8.8) Engine Type KIORITZ, air-cooled, two-stroke, single cylinder Rotation Clockwise as viewed from the output end Displacement 30.5 (1.861)

  • Page 5: Technical Data

    CS-310 SERVICE INFORMATION 1-2 Technical data Engine Idling speed 3,200 +/- 400 Wide open throttle speed* 12,000 - 13,000 Clutch engagement speed 4,000 - 4,500 Compression pressure MPa (kgf/cm ) (psi) 0.88 (9.0) (128) Ignition system Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)

  • Page 6: Torque Limits

    CS-310 SERVICE INFORMATION 1-3 Torque limits Descriptions Size kgf•cm N•m in•lbf Starter Starter pawl M 5* 30 - 45 3 - 4.5 26 - 40 system Starter case M 5** 35 - 50 3.5 - 5 30 - 45 Ignition Magneto rotor (Flywheel)

  • Page 7: Service Limits

    CS-310 SERVICE INFORMATION 1-5 Service Limits 5K177 5K083 5K084 5K081 5K082 5K016 5K025 5K178 5K191 5K173 5K174 5K181 5K097 Description mm (in) A Cylinder bore When plating is worn and aluminum can be seen Piston outer diameter Min. 35. 91 (1.414)

  • Page 8: Special Tools

    CS-310 SERVICE INFORMATION 1-6 Special tools PET-9000 OPPAMA INTEGRATED IGNITION ANALYZER 14, 15 Part Number Description Reference 990511-30017 Tachometer PET-1000 Measuring engine speed X605-000050 Torx L wrench Removing and installing bolt 897501-03938 Puller Removing magneto rotor 897505-16133 Clutch tool Removing and assembling clutch assembly...

  • Page 9: Starter System

    CS-310 STARTER SYSTEM 2 STARTER SYSTEM (i-30 starter) (A) Starter case (B) Rewind spring (C) Rewind spring case assembly (D) Rope reel (E) Power spring (F) Pawl catcher (G) Screw (H) Starter rope (J) Starter grip Construction Working principle 1. Rewind spring case assembly (C) is installed 1.

  • Page 10: Disassembling Starter Assembly

    CS-310 STARTER SYSTEM 2-1 Disassembling starter assembly 1. Remove sprocket guard (A). 2. Remove brake lever (B) and cylinder cover (C). 3. Remove three screws and remove starter as- sembly (D) from unit. 4. Pull out starter rope about 30 cm (12 in) and hold rope reel (E) by hand.

  • Page 11: Replacing Starter Rope

    CS-310 STARTER SYSTEM 2-2 Replacing starter rope 1. Pull out and untie knot (A). 2. Pull knot (B) to remove rope from rope reel (C). 3. When installing a new starter rope, singe both ends of the rope to prevent fraying.

  • Page 12: Assembling Starter

    CS-310 STARTER SYSTEM 2-3 Assembling starter 1. If rewind spring (A) is unwound from rewind spring case (B), wind the spring inside case as shown. 2. Carefully install rewind spring case assembly (C) on starter case, matching hole (c) with post (D).
  • Page 13 CS-310 STARTER SYSTEM 2-3 Assembling starter (continued) 5. Install power spring (G), engaging hook (g1) with rope reel groove (f2). 6. Install pawl catcher (H), engaging hole (h) with power spring top end hook (g2). 7. Reinstall screw (J) on starter post.

  • Page 14: Replacing Starter Pawl

    CS-310 STARTER SYSTEM 2-4 Replacing starter pawl 1. Remove starter assembly from unit. 2. Loosen bolt (A) and remove washer, pawl (B), spacer (C) and torsion spring (D). Replace dam- aged or worn parts. NOTE: When it is hard to loosen bolt, install piston stopper 897537-30130 (E) in spark plug hole to stop crankshaft rotation and remove bolt easily.

  • Page 15: Ignition System

    CS-310 IGNITION SYSTEM 3 IGNITION SYSTEM (A) Flywheel (E) Spark plug cap (B) Ignition coil (F) Switch lead (C) Spark plug (G) Ground lead (D) Spark plug cap coil (H) Ignition switch...

  • Page 16: Troubleshooting Guide

    CS-310 IGNITION SYSTEM 3-1 Troubleshooting guide Start Remedy Inspect S.T. Adjust pole shoe air gaps. Pole (Inspect flywheel magnet shoe air at the same time. Go to gaps Clean / A if OK.) Spark plug Regap / S.T. Replace. Flywheel Replace flywheel.

  • Page 17: Testing Spark

    CS-310 IGNITION SYSTEM 3-2 Testing spark 1. Remove cylinder cover. Remove spark plug cap from spark plug. 2 . C o n n e c t s p a r k p l u g c a p t o s p a r k t e s t e r 990511-30023 (A), and connect spark tester lead (B) on spark plug as shown.

  • Page 18: Inspecting Ignition Switch

    CS-310 IGNITION SYSTEM 3-4 Inspecting ignition switch 1. Remove cylinder cover. 2. Remove switch lead (A) from ignition coil. 3. Connect one probe of Ohm-meter or multi-meter to switch lead. Connect the other probe to cylinder fi n (B). 4. When ignition switch is upward (“ON” position), tester should indicate infi...

  • Page 19: Replacing Ignition Switch

    CS-310 IGNITION SYSTEM 3-5 Replacing ignition switch 1. Remove cylinder cover. 2. Push down air fi lter retainer (A) and remove air fi lter (B). 3. Loosen nut (C), and remove ignition switch (D) and ground lead (E) from the unit. Remove switch lead (F) from ignition switch.

  • Page 20: Inspecting Ignition Coil Resistance

    CS-310 IGNITION SYSTEM 3-6 Inspecting ignition coil resistance 1. Remove cylinder cover. 2. Connect one probe of Ohm-meter or multimeter to spark plug cap coil (A). 3. Connect the other probe to cylinder fin (B) to measure secondary coil resistance. Secondary coil resistance should be in the range of 1.9 to 2.3...

  • Page 21: Replacing Spark Plug Cap And Coil

    CS-310 IGNITION SYSTEM 3-7 Replacing spark plug cap and coil 1. Disconnect spark plug cap (A) from spark plug. 2. Apply some oil in spark plug cap (A) for easy re- moval from high tension lead (B). 3. Pull spark plug cap away from high tension lead.

  • Page 22: Setting Pole Shoe Air Gaps

    CS-310 IGNITION SYSTEM 3-9 Setting pole shoe air gaps 1. Insert Module air gap gauge: 91004 (A) or 0.3 - 0.4 mm (0.012 - 0.016 in) thick feeler gauge be- tween fl ywheel and ignition coil shoes. 2. Rotate fl ywheel until magnetic poles of fl ywheel face ignition coil shoes.
  • Page 23 CS-310 IGNITION SYSTEM 3-10 Inspecting fl ywheel and key (continued) 5 . R e m o v e s t a r t e r p a w l s . T h e n s e t p u l l e r 897501-03938 (C) on fl...

  • Page 24: Fuel System

    CS-310 FUEL SYSTEM 4 FUEL SYSTEM ( A ) Fuel cap ( B ) O-ring ( C ) Connector ( D ) Fuel tank ( E ) Fuel tank vent ( F ) Fuel strainer ( G ) Fuel line...

  • Page 25: Inspecting Air Fi Lter

    CS-310 FUEL SYSTEM 4-1 Inspecting air fi lter 1. Close choke shutter. Remove cylinder cover. 2. Push down air fi lter retainer (A). Lift tabs (B) and remove air fi lter (C). 3. Inspect the surface of air fi lter. If blocked with dirt or dust, remove the obstruction using brush.

  • Page 26: Inspecting Fuel Tank And Line

    CS-310 FUEL SYSTEM 4-3 Inspecting fuel tank and line 1. Clean fuel tank inside as required. 2. Remove cylinder cover, air filter and cleaner case. 3. Disconnect fuel line (A) from carburetor. 4. Connect pressure tester 897803-30133 (B) to fuel line.

  • Page 27: Inspecting And Replacing Tank Vent

    CS-310 FUEL SYSTEM 4-4 Inspecting and replacing tank vent NOTE: Tank vent prevents a vacuum from forming in fuel tank when fuel in fuel tank is being con- sumed. When pressure in fuel tank becomes too high, tank vent releases the pressure.
  • Page 28 CS-310 FUEL SYSTEM 4-4 Inspecting and replacing tank vent (continued) NOTE: Inspection using 897803-30133 If pressure tester 91024 is not available, tank vent can be inspected with pressure tester 897803-30133 as follows. 1. Connect tank vent (A) to pressure tester 897803-30133 (B).

  • Page 29: Replacing Purge Bulb

    CS-310 FUEL SYSTEM 4-5 Replacing purge bulb 1. Remove cylinder cover, air filter and cleaner case. 2. Remove throttle rod (A) and choke rod (B) from carburetor. 3. Remove fuel line (C) and purge line (D) from carburetor. 4. Remove purge line (D) and fuel return line (E) from purge bulb.

  • Page 30: Replacing Fuel Line And Fuel Return Line

    CS-310 FUEL SYSTEM 4-6 Replacing fuel line and fuel return line 1. Remove cylinder cover, air filter and cleaner case. 2. Remove carburetor referring to “4-5 Replacing purge bulb”. 3. Inspect fuel line (A) and fuel return line (B). Re- place them if defective.

  • Page 31: Adjusting Carburetor

    CS-310 FUEL SYSTEM 4-7 Adjusting carburetor 4-7-1 General adjusting rules A. Before starting the unit for adjustment, check the following items. 1. The correct spark plug must be clean and properly gapped. 2. The air fi lter element must be clean and properly installed.
  • Page 32 CS-310 FUEL SYSTEM 4-7 Adjusting carburetor (continued) 2. Screw 2.5 mm limiter cap removal tool P/N 89801 counterclockwise into center hole of limiter cap until tab of the limiter cap just comes out of the locating slot. NOTE : DO NOT COMPLETELY REMOVE LIM-...

  • Page 33: Adjusting Carburetor

    CS-310 FUEL SYSTEM 4-7 Adjusting carburetor (continued) 4-7-3 Adjusting carburetor 1. Start and warm engine for 1 minute alternat- ing engine speed between WOT and idle every 5 Idle adjust screw seconds. Turn H mixture needle counterclockwise until engine speed drops to approx. 12,500 rpm at WOT.

  • Page 34: Winter Plug

    CS-310 FUEL SYSTEM 4-8 Winter plug When it is cold weather and acceleration is poor, release winter plug. 1. Winter plug is located inside cylinder cover (A). 2. Picture shows “warm weather position” of winter plug (B). 3. Remove winter plug (B) to open vent-opening (C) and introduce warm air from cylinder side to carbu- retor box.

  • Page 35: Testing Carburetor

    CS-310 FUEL SYSTEM 4-9 Testing carburetor NOTE: To perform this test, carburetor interior should be wet with fuel. If dry, a little leakage may occur from diaphragms and/or inlet needle seat. 1. Remove cylinder cover, air filter and cleaner case. Disconnect fuel line from carburetor. Connect pressure tester 897803-30133 (A) to carburetor fuel inlet.

  • Page 36: Inspecting Crankcase Pulse Passage

    CS-310 FUEL SYSTEM 4-10 Inspecting crankcase pulse passage 1. Drop a little oil in pulse hole (A) on intake bel- lows (B). 2. Remove spark plug and pull starter grip several times. Oil should spit back from the hole. 3. If not, inspect whether pulse passage is clogged.

  • Page 37: Inspecting Inlet Needle Valve

    CS-310 FUEL SYSTEM 4-12 Inspecting inlet needle valve 1. Remove metering lever (A) and pivot pin. Re- move spring (B) and inlet needle valve (C). 2. Inspect inlet needle valve if worn or sticky. Clean or replace as required. NOTE: Causes of fuel fl ooding from carburetor to...

  • Page 38: Inspecting Diaphragm

    CS-310 FUEL SYSTEM 4-13 Inspecting diaphragm 1. Inspect metering diaphragm (A) for hardening, distortion, or pin hole. Replace as required. 2. Remove pump cover (F), pump diaphragm (D) and pump gasket (E). 3. Inspect pump diaphragm (D) and replace if hardened or curled at valve tabs.

  • Page 39: Installing Carburetor

    CS-310 FUEL SYSTEM 4-15 Installing carburetor 1. Connect throttle rod (A) to carburetor. 2. Connect fuel line (B) to carburetor fuel inlet (C). Connect purge line (D) to carburetor fuel outlet (E). 3. Connect choke rod (F) to carburetor. Install choke rod to the unit, with choke grommet (G).

  • Page 40: Clutch System

    CS-310 CLUTCH SYSTEM 5 CLUTCH SYSTEM ( A ) Worm gear ( B ) Clutch plate ( C ) Clutch plate ( D ) Clutch spring ( E ) Clutch shoe ( F ) Clutch hub ( G ) Clutch assembly...

  • Page 41: Inspecting Clutch Parts

    CS-310 CLUTCH SYSTEM 5-1 Inspecting clutch parts 1. Remove sprocket guard (A) and cylinder cover (B). NOTE: If starter assembly is installed, pull starter rope out about 20 cm (8 in), and make a temporary knot (C) to prevent starter damage when installing clutch assembly.

  • Page 42: Replacing Clutch Parts

    CS-310 CLUTCH SYSTEM 5-2 Replacing clutch parts 1. Install clutch spring (A) to clutch shoes (B). 2. Set one arm of clutch hub (C) to one clutch shoe. 3. Install other two clutch shoes on two arms as shown. 5-3 Installing clutch assembly 1.
  • Page 43 CS-310 CLUTCH SYSTEM 5-3 Installing clutch assembly (Continued) 6. Apply lithium-based grease to needle bearing (F). Install clutch drum (G) and needle bearing (F) on crankshaft, placing the hands (a) of worm gear (A) in cutouts (g) of clutch drum.

  • Page 44: Chain Brake System

    CS-310 CHAIN BRAKE SYSTEM 6 CHAIN BRAKE SYSTEM ( A ) Brake lever ( B ) Collar ( C ) Washer ( D ) Torsion spring ( E ) Spacer ( F ) Brake cover ( G ) Brake connector...

  • Page 45: Disassembling Chain Brake

    CS-310 CHAIN BRAKE SYSTEM 6-1 Disassembling chain brake WARNING DANGER Wear eye protection and safety gloves when disassembling or assembling chain brake to protect eye and hand from injury. 1. Move brake lever (A) to chain brake engaging position. 2. Remove sprocket guard (B) and brake lever.

  • Page 46: Assembling Brake Parts

    CS-310 CHAIN BRAKE SYSTEM 6-2 Assembling brake parts 1. Set brake band (A) together with spacer (B), brake connector (C) and spacer (D), placing the notch (b) of spacer (B) as shown. Install roller (E) through brake band hole (a).

  • Page 47: Saw Chain Lubrication System

    CS-310 SAW CHAIN LUBRICATION SYSTEM 7 SAW CHAIN LUBRICATION SYSTEM ( A ) Oil cap ( B ) O-ring ( C ) Connector ( D ) Oil tank vent ( E ) Engine cover ( e ) Oil tank ( F ) Oil strainer...

  • Page 48: Inspecting Oil Tank Vent

    CS-310 SAW CHAIN LUBRICATION SYSTEM 7-2 Inspecting oil tank vent NOTE: Oil tank vent prevents a vacuum from forming in oil tank when chain oil in the tank is con- sumed. 1. Remove starter assembly. 2. Remove oil tank vent (A) using paper clip and clean it.

  • Page 49: Inspecting Oil Line

    CS-310 SAW CHAIN LUBRICATION SYSTEM 7-3 Inspecting oil line 1. Remove starter assembly. 2. Remove screw (A). 3. Remove screw (B) of unit bottom. 4. Remove screw (C). 5. Remove front handle (D) and rear handle (E) from engine unit.

  • Page 50: Replacing Oil Line And Grommet

    CS-310 SAW CHAIN LUBRICATION SYSTEM 7-4 Replacing oil line and grommet 1. Pull out oil strainer from oil tank (Refer to “7-1 Inspecting oil cap and strainer”) and remove oil strainer from oil line. 2. Remove oil grommet (A) from engine cover.

  • Page 51: Replacing Auto-Oiler Assembly

    CS-310 SAW CHAIN LUBRICATION SYSTEM 7-5 Replacing auto-oiler assembly 1. Tap 5-mm (M5 - Pitch 0.8mm) thread in the bore of auto-oiler (A). 2. Use auto-oiler puller Y089-000130 to remove auto-oiler. Y089-000130 3. Set distance (B) of Y089-000130 to 15-20 mm (0.59-0.79 in).
  • Page 52 CS-310 SAW CHAIN LUBRICATION SYSTEM 7-5 Replacing auto-oiler assembly (continued) 7. Set new auto-oiler (H) in engine cover, aligning oil groove (h) with the rib (J). NOTE: If oil groove is not aligned with the rib, chain oil does not fl ow.

  • Page 53: Engine

    CS-310 ENGINE 8 ENGINE ( A ) Cylinder (Upper crankcase) ( B ) Crankcase (Lower crankcase) ( C ) Crankshaft assembly ( D ) Ball bearing ( E ) Oil seal ( F ) Engine cover ( G ) Piston ring...

  • Page 54: Testing Cylinder Compression

    CS-310 ENGINE 8-1 Testing cylinder compression NOTE: Test cylinder compression when engine is cold. 1. Move ignition switch to STOP position. Then re- move spark plug. 2. Install compression gauge 91037 (A) in spark plug hole and tighten by hand. Pull starter several times to stabilize reading on compression gauge.

  • Page 55: Inspecting Muffl Er And Exhaust Port

    CS-310 ENGINE 8-3 Inspecting muffl er and exhaust port 1. Remove cylinder cover. 2. Remove muffl er with muffl er gasket. 3. Inspect cylinder exhaust port and clean the port using wooden or plastic stick if carbon is found. NOTE: When cleaning exhaust port, always posi- tion piston at Top Dead Center (TDC) to prevent carbon from entering cylinder.

  • Page 56: Testing Crankcase And Cylinder Seal

    CS-310 ENGINE 8-4 Testing crankcase and cylinder seal 1. Remove cylinder cover, air filter and cleaner case. 2. Remove carburetor from the unit. 3. To seal intake port, install pressure rubber plug 897826-16131 (A) between intake bellows and carburetor, using carburetor screws (B). Tighten screws (B).

  • Page 57: Removing Engine Block

    CS-310 ENGINE 8-5 Removing engine block 1. Remove cylinder cover, sprocket guard, brake lever and starter assembly (Refer to “2-1 Disas- sembling starter assembly”). 2. Remove air fi lter, cleaner case and carburetor. 3. Remove fl ywheel (Refer to “3-10 Inspecting fl y- wheel and key”).

  • Page 58: Inspecting Cylinder

    CS-310 ENGINE 8-6 Inspecting cylinder 1. Remove intake bellows from cylinder, together with intake insulator (A) and intake bellows retainer (B). 2. Remove 4 bolts (C) securing crankcase. 3. Gently tap both crankshaft ends using plastic mallet to remove lower crankcase with crankshaft and piston assembly.

  • Page 59: Inspecting Piston And Piston Ring

    CS-310 ENGINE 8-7 Inspecting piston and piston ring 1. Inspect piston ring and replace it if broken or scored, or if it exceeds service limits (Refer to “1-5”). 2. Inspect piston crown. Clean with fi ne sand pa- per, oil stone, or soft cleaning brush (A) if carbon is found.

  • Page 60: Replacing Oil Seal And Ball Bearing

    CS-310 ENGINE 8-9 Replacing oil seal and ball bearing 1. Check oil seal(s) and replace if defective. 2. Check ball bearing(s) for smooth rotation. If not, remove ball bearing(s) using bearing wedge (A) 897701-02830. 3. Install new ball bearing(s) onto crankshaft us- ing bearing/seal tool 897726-21430 (B).

  • Page 61: Installing Piston And Piston Ring

    CS-310 ENGINE 8-10 Installing piston and piston ring 1. Set piston pin spacers (A) on small end of con- necting rod (B) as shown. NOTE: Place piston over connecting rod with pis- ton arrow mark (C) pointing as shown. 2. Insert pin guide tool (D) stamped “8”, through piston, with piston pin spacers set at step 1.

  • Page 62: Assembling Piston Into Cylinder

    CS-310 ENGINE 8-11 Assembling piston into cylinder 1. Apply 2-stroke oil on cylinder walls, oil seal grooves, piston ring, ball bearing, and both sides of con-rod. 2. Position end gap of piston ring with locating pin (A). 3. Install piston in cylinder with arrow (B) pointing to muffl...

  • Page 63: Installing Engine Block

    CS-310 ENGINE 8-12 Installing engine block 1. Assemble intake bellows (A) and intake bellows retainer (B) to cylinder, aligning locating marks (a1) and (b). 2. Install fl ange (a2) of intake bellows in the hole (c) of intake insulator (C).

  • Page 64: Rear Handle And Control System

    CS-310 REAR HANDLE AND CONTROL SYSTEM 9 REAR HANDLE AND CONTROL SYSTEM ( A ) Rear handle ( B ) Spring pin ( C ) Torsion spring ( D ) Throttle trigger ( E ) Throttle lockout ( F ) Rear handle cover 9-1 Replacing throttle trigger 1.
  • Page 65 CS-310 REAR HANDLE AND CONTROL SYSTEM 9-1 Replacing throttle trigger (continued) 5. Set torsion spring (F) on throttle trigger (E) as shown. 6. Install throttle trigger (E) with torsion spring (F) and insert spring pin (C) as follows. 1) Insert spring pin (C) in the hole of rear han- dle so that tip of spring pin does not protrude inside handle.

  • Page 66: Replacing Cushions

    CS-310 REAR HANDLE AND CONTROL SYSTEM 9-2 Replacing cushions 1. Remove starter assembly from the unit (Refer to “2-1 Disassembling starter assembly”). 2. Remove front handle and rear handle from the unit (Refer to “7-3 Inspecting oil line”). 3. Inspect cushions for cracking or wear. If dam- aged, replace with new cushions as follows.

  • Page 67: Guide Bar Mounting System

    CS-310 GUIDE BAR MOUNTING SYSTEM 10 GUIDE BAR MOUNTING SYSTEM ( A ) Sprocket guard ( B ) Tensioner screw ( C ) Chain tensioner ( D ) Collar ( E ) Bevel gear ( F ) Bevel gear...

  • Page 68: Replacing Chain Tensioner

    CS-310 GUIDE BAR MOUNTING SYSTEM 10-1 Replacing chain tensioner 1. Remove bolt (A) from sprocket guard. Remove tensioner screw (C), chain tensioner (D), collar (B) and bevel gear (E). Remove bevel gear (F). 2. Inspect them for damage or wear. Replace as required.

  • Page 69: Replacing Guide Bar Stud

    CS-310 GUIDE BAR MOUNTING SYSTEM 10-2 Replacing guide bar stud 1. Install two nuts on defective stud and tighten them against each other. 2. Turn nut (A) counterclockwise to remove stud. NOTE: If it is hard to remove or broken stud is too...

  • Page 70: Maintenance Guide

    CS-310 MAINTENANCE GUIDE 11 MAINTENANCE GUIDE 11-1 Troubleshooting guide TROUBLE Engine does not crank. Engine does not start. Fuel leaks. Idling is not stable. Acceleration is poor. Engine stalls at high speed. Engine lacks power. Engine seizure / overheat Engine misfires.
  • Page 71 CS-310 MAINTENANCE GUIDE 11-1 Troubleshooting guide (continued) INSPECTING REFERENCES Inspecting first. Fuel system / Carburetor 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 Air filter Fuel cap / strainer Carburetor adjustment Fuel tank/line/vent, Purge bulb...

  • Page 72: Disassembly Chart

    CS-310 MAINTENANCE GUIDE 11-2 Disassembly chart Sprocket Cylinder guard cover (2-1,5-1,6-1) Clutch Air filter, Brake lever Spark plug drum Cleaner case (2-1,6-1) (3-3) (5-1,5-3) (4-1,4-3) Starter assembly (2-1) Ignition coil (3-8) Clutch assembly, Chain brake Muffler Carburetor Front Worm gear...

  • Page 73: Service Intervals

    CS-310 MAINTENANCE GUIDE 11-3 Service Intervals Intervals Inspecting point Service Reference 3 months 6 months Daily 100 hours 300 hours Screws and bolts * Retighten / Replace Air fi lter Clean Inspect / Replace Carburetor Inspect / Repair 4-9 to 4-15...

  • Page 74: Index

    CS-310 INDEX Adhesive 4, 60 Flywheel 4, 7, 13, 20, 21, 55 Piston ring 5, 51, 52, 57, 59, 60 Air fi lter 17, 22 to 24, 27 to 30, 33, 54, Fuel cap 22 to 24, 28 Pole shoe air gaps 3, 6, 19, 20...
  • Page 75 Printed in Japan 1101...

Table of Contents