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ICS 603GC Shop Manual

Gas utility saw
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603GC Gas Utility Saw
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  • Page 1 603GC Gas Utility Saw Shop Manual...

  • Page 3: Table Of Contents

    WATER HOSE IGNITION COIL FLYWHEEL FRONT HANDLE FUEL TANK CRANKCASE BAR STUDS TENSIONER CARBURETOR TUNING IDLE SPEED ADJUSTMENT TROUBLESHOOTING DIAGRAMS TROUBLESHOOTING: FUEL SYSTEM LEAKS TROUBLESHOOTING: CRANKCASE LEAKS APPENDIX . SPARK PLUG REFERENCE GUIDE Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 4: Shop Manual Use

    This manual contains all the technical information necessary for carrying out repairs on the 603GC cut-off saw. For safe, efficient work, it is of prime importance that the values indicated be adhered to. Routine periodic maintenance is covered in the operator’s manual included with each cut-off saw.

  • Page 5: Tools

    SHOCK ABSORBER TOOL 7547 SPARK TESTER 7548 FLYWHEEL PULLER TOOL 7550 LIMITER CAP REMOVAL TOOL 7565 ELECTRONIC TACHOMETER 7569 INDUCTION SEAL FLANGE W/ SCREWS 7570 EXHAUST SEAL FLANGE W/ SCREWS 7573 TUNING SCREWDRIVER Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 6: Saw Specifications

    00 db @  meter Vibration Level .0 m/s Spark Plug TYPE Champion RCJ-7Y (for spark plug reference guide see page 8) Spark Plug Gap 0.02 inches (0.5 mm) Sprocket Type 8-tooth rim sprocket Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 7: Serial Number Location

    603GC SHOP MANUAL 3. SERIAL # LOCATION 3 603GC Cut-Off serial number series. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 8: Spare Parts Diagram (Torque And Loctite®)

    WRIST PIN NEEDLE BEARING 505403 CYLINDER BLOCK BOLT & WASHER 73874 CYLINDER BASE GASKET 505439 SPARK PLUG 7399 COMPLETE CYLINDER & PISTON ASSEMBLY 505428 WASHER 73963 SCREW PLUG 73965 DECOMPRESSION VALVE 7642 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 9 BAR MOUNT PAD COVER PLATE 505467 CRANKCASE GASKET 505440 CHOKE LEVER BUSHING 73955 CRANKCASE BOLT 73930 SCREW, 5 X 50mm 509709 CRANKCASE 505427 TENSIONER 505393 CRANKSHAFT BEARING 505375 FUEL LINE GROMMET 505627 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 10 CLUTCH CUP WITH SPLINED ADAPTOR 505422 TORQUE LOCTITE ® DESCRIPTION PART NUMBER in‑lbs. CRANKSHAFT SEAL FLYWHEEL SIDE 73877 CRANKSHAFT BEARING 505375 CRANKSHAFT SEAL 50538 CRANKSHAFT BUSHING 509487 WRIST PIN NEEDLE BEARING 505403 CRANKSHAFT ASSEMBLY 505397 Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 11: Muffler Assembly

    PART NUMBER in‑lbs. MUFFLER SUPPORT BRACKET SCREW 73885 SERRATED WASHER 73327 MUFFLER SUPPORT BRACKET 505392 MUFFLER MOUNTING SCREW 73883 SCREW 7482 WASHER 73897 MUFFLER DEFLECTOR 505396 MUFFLER ASSEMBLY 50548 CYLINDER-TO-MUFFLER GASKET 505385 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 12 CARBURETOR ATTACHMENT SCREW 73902 OUTER INTAKE MANIFOLD FLANGE SCREW 7390 CARBURETOR MOUNTING BRACKET 5054 CARBURETOR 505654 OUTER INTAKE MANIFOLD FLANGE 505384 OUTER INTAKE MANIFOLD 507427 ADJUSTMENT GUIDE 50539 BREATHER TUBE BODY 775 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 13 FUEL BREATHER COMPLETE 7748 REAR HANDLE SHOCK ABSORBER 505425 TUBE CLAMP, WITH TABS 7588 BREATHER TUBE ELBOW 7759 TUBE CLAMP, NO TABS 7760 FUEL BREATHER, REMOTE 776 RUBBER WATER DEFLECTOR 505445 SHOCK ABSORBER 505387 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 14 4. SPARE PARTS DIAGRAM TITLE 603GC SHOP MANUAL FLYWHEEL ASSEMBLY TORQUE LOCTITE ® DESCRIPTION PART NUMBER in‑lbs. FLYWHEEL SHROUD 505438 FLYWHEEL 505399 7389 WAVE WASHER 739 PLAIN WASHER 7392 STARTER PAWL ASSEMBLY 508852 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 15 7397 IGNITION TOGGLE CABLE 7399 IGNITION COIL 505426 SWITCH, IGNITION TOGGLE 73237 SCREW 7394 PLAIN WASHER 73890 IGNITION TOGGLE SWITCH NUT 73239 IGNITION TOGGLE PLATE ON/OFF 73238 SWITCH GROUND CONNECTION PLATE 7449 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 16 STARTER PULLEY SCREW 73907 RECOIL HOUSING SCREW 505380 STARTER PULLEY WASHER 73905 STARTER ROPE PULLEY 508857 STARTER ASSEMBLY 50546 STARTER COIL SPRING & HOUSING 73909 STARTER CASE PLATE 745 STARTER ASSEMBLY CAP 508853 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 17 AIR FILTER FLANGE 7758 FILTER SUPPORT SCREW 505437 FILTER CANISTER GASKET 73335 O-RING 7472 TUBE CLAMP, NO TABS 7760 COMPENSATOR TUBE 505382 BREATHER GROMMET 7763 THROTTLE ASSEMBLY 7750 O-RING, AIR FILTER 7333 WASHER 73897 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 18 7465 WATER HOSE 509488 WATER HOSE COVER 7464 HOSE HANGER 746 WATER SHUT-OFF VALVE 7458 WATER HOSE O-RING 7468 RING NUT 7457 FITTING 7467 WATER HOSE GASKET 7469 FITTING 7454 FITTING 7466 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 19 50549 GUARD FLAP SCREW 7479 GUARD FLAP 505492 RUBBER BUMPER, COVER 7330 SCREW 7487 SIDE COVER PLATE 50549 SIDE COVER GASKET 50547 MOUNTING NUT 509852 RUBBER WALLWALKER 505493 FITTING 7454 BOLT 73983 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 20 4. SPARE PARTS DIAGRAM 603GC SHOP MANUAL CARBURETOR REPAIR KIT TORQUE LOCTITE ® DESCRIPTION PART NUMBER in‑lbs. ABOVE CARBURETOR WALBRO HDA-225 57742 CARBURETOR REPAIR KIT 50544 Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 21 Remove air filter from cover. Inspect air filter. Replace if necessary (P/N 7752). Remove secondary filter from air filter mount. Clean secondary filter with cleaning solution and a nylon brush. Let dry and reinstall. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 22 Inspect air filter cover gasket. Replace if permanently depressed or hard due to slurry. Inspect filter cannister gasket. Clean. Replace if necessary. Secure air filter mount screws (3) using Loctite 242. ® Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 23 Clean area around the spark plug to prevent debris from entering the cylinder. Remove the spark plug. Inspect the spark plug for proper size, gap and condition. If dirty, clean with a wire brush as shown. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 24 NOTE: If the spark plug must be replaced refer to the Spark Plug Reference Guide on page 8 to select the correct replacement plug. Assemble in the reverse order. Make sure the plug boot is seated completely. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 25: Clutch & Rim Sprocket

    Pull starter handle until piston stops against tool. Remove clutch. Left hand threads – rotate clockwise to loosen. NOTE: If an impact wrench is available steps 7. and 7.2 do not have to be performed. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 26 TITLE 603GC SHOP MANUAL Remove all drive components. Inspect the clutch shoes for wear. Replace if the shoe has less than 0.04” ( mm) of material, as shown. Inspect spring for cracks. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 27 Insert top edge of clutch shoe over spring as shown. Snap clutch shoe into place. Inspect the rim sprocket for wear. Replace if the rim sprocket teeth are worn to points, as shown on right. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 28 (ICS P/N 70885). ® Assemble clutch spacer washer, bearing, clutch cup with rim sprocket, and inside clutch spacer washer. 7. Install clutch. Tighten firmly. Left hand threads Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 29: Starter System

    Pull 4-6” (0-5 cm) of rope out. Line rope up with notch on pulley. To release pulley, slowly rotate pulley counterclockwise until spring pressure is released. Use thumb as a brake. Remove rubber screw seal. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 30 Attempting to re-bend the spring hook may cause the hook to break off. Carefully remove coil spring and housing to prevent spring from unwinding. Lubricate with light weight oil. Replace parts carefully. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 31 Pull the end of the rope down and in front of the tail. Send the end through the loop a second time, creating a double knot; cinch tight. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 32 Torque to 26 in-lbs. (2.9 Nm). 8.5 Wind the recoil spring. Line rope up with notch on pulley. Rotate the pulley with the rope clockwise 5 times. Untangle rope and release. 8.6 Assemble starter cord shield. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 33 Use Loctite 242 on the pawl screws. ® Torque to 60 in-lbs. (6.8 Nm). 8.20 Install starter cover. Pull out cord 4-6”. Slowly release while placing cover to allow pawls to engage. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 34 8. STARTER TITLE 603GC SHOP MANUAL 8.2 Install starter cover screws. Use Loctite 242. ® Torque to 60 in-lbs. (7 Nm). Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 35: Wallwalker

    This section covers the removal, inspection, and assembly of the rubber padded wallwalker and guard flap. Inspect bumpers. Replace if worn. Remove side cover assembly. Remove cover plate. Remove crankcase screws and wave washers. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 36 Replace the flap if it is torn or damaged in any way. Remove guard flap screws and washers. Reassemble in the reverse order. Install crankcase screws and wave washers. Use Loctite 242. ® Torque to 70 in-lbs. (7.9 Nm). Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 37: Cylinder Cover

    0.6 Remove cylinder cover. Pull up on front. Push intake manifold through hole. Make sure throttle linkage is disengaged from cylinder cover. Guide fuel breather tube and compensator tube through cylinder cover. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 38 603GC SHOP MANUAL 0.7 Remove stop switch leads. 0.8 Inspect cylinder cover for damage. Replace if necessary. 0.9 Check filter cover gasket. Replace if necessary. 0.0 Check cylinder cover water seal. Replace if necessary. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 39 (Install compensating tube first). NOTE: Be careful to not pull tubes away from their point of connection. Approximately 3/4” of tube B (1) should protrude from B (2) cylinder cover. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 40 242. ® Torque to 43 in-lbs. (4.9 Nm). 0.5 Install air filters and cover. Install pre-filter. Install clean air filter. Install air filter flange and tighten. Install air filter cover and tighten. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 41: Muffler

    Remove muffler support screws. .2 Remove muffler screws (2) – note there are two screws – and serrated washers located inside the muffler. .3 Remove muffler and heat shield gasket. Replace any damaged components. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 42 Install top 3 muffler support screws and serrated washer finger tight. Install bottom 2 muffler support screws with Loctite 242. ® Torque top screws to 78 in-lbs. (9 Nm). Torque bottom screws to 52 in-lbs. (6 Nm). Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 43: Carburetor

    2.2 Remove fuel line from carburetor and support bracker. 2.3 Remove carburetor support bracket. Remove carburetor support screw () with #4 Torx or straight blade screwdriver. Remove carburetor body screws (2). Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 44 Remove carburetor from choke linkage. 2.5 Assemble in the reverse order. Torque carburetor body screws to 43 in-lbs. (5 Nm). Torque supporter screw with Loctite 242 to 43 in-lbs. (5 Nm). ® Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 45: Cylinder & Piston

    5, 6, 0, and 2 if necessary. 3. Remove carburetor base screws. Remove carburetor base bracket from rear manifold. Remove carburetor base bracket from pulse tube. 3.2 Remove pulse tube and protective spring from cylinder base. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 46 Remove rear manifold clamp. 3.4 Remove rear manifold from cylinder. Inspect for holes and tears. 3.5 Remove cylinder screws (4) and wave washers. 3.6 Remove cylinder. Remove cylinder gasket and clean case. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 47 13. CYLINDER & PISTON 3.7 Remove wrist pin retaining clips (2). 3.8 Press wrist pin out with an 8 mm deep socket. 3.9 Remove piston and inspect. Replace if damaged. 3.0 Remove wrist pin bearing. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 48 Install and align holes and notch. 3.2 Install wrist pin bearing in rod. Oil bearing with ICS 2-stroke ® engine oil. 3.3 Install rings. Install lower ring first for ease of installation. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 49 (toward the crankcase) or twelve o'clock (toward the cylinder head) position. Each retaining clip should produce an audible "click" as it seats in its groove in the piston. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 50 2-stroke oil. ® Align wrist pin with wrist pin bearing. Complete wrist pin installation. Install second wrist pin retaining clip. Make sure wrist pin retaining clip is in the proper orientation (see 3.6). Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 51 Remove ring compression tool. Slide cylinder down piston and into crankcase. Align cylinder bolt holes with crankcase. 3.22 Install 4 cylinder screws and washers. Use Loctite 242. ® Torque bolts to 95.5 in-lbs. ( Nm). Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 52 If over tightened, intake boot can tear, resulting in an air leak which will cause engine damage. 3.25 Install protective spring onto pulse tube. 3.26 Install the pulse tube onto cylinder barb. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 53 Make sure rear manifold lip is flat. 3.28 Install carburetor base screws. Use Loctite 242 on screws (3). ® Make sure to include stop switch wire on front screw. Torque to 35 in-lbs. (4 Nm). Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 54: Water Hose

    Assemble in reverse order. 4.3 Remove water hose connector from side cover. Remove clamp and hose from fitting. Unthread fitting from side cover. 4.4 Inspect side cover for damage. Replace if necessary. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 55: Ignition Coil

    Remove ignition coil screws, wave washers and plain washers. 5.3 Remove ignition coil. 5.4 Inspect ignition coil. Look for: • Cracks • Missing insulation • Wear marks in wire Clean flywheel magnets and coil if rusty. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 56 26 in-lbs. (3 Nm). Remove shim, rotate flywheel to check clearance. 5.6 Install flywheel shroud. 5.7 Route yellow ignition stop switch wire through crankcase into carburetor chamber. 5.8 Complete ignition wire routing. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 57: Flywheel

    Remove flywheel nut, wave washer, and plain washer. 6.3 Screw on flywheel removal tool finger tight. Unscrew tool  ½ turns leaving approximately /8 inch (5 mm) space between tool and flywheel. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 58 6.7 Inspect cast woodruff key inside the flywheel. NOTE: Key is cast into flywheel. 6.8 Install flywheel, plain washer, wave washer, and flywheel nut. Torque nut to 27 in-lbs. (25 Nm). Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 59: Front Handle

    7.2 Remove front handle screws on bottom. 7.3 Install front handle. Roll front handle into place. Install front handle screws (4). Use Loctite 242. ® Torque to 69 in-lbs. (8 Nm). Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 60: Fuel Tank

    8. Remove vibration isolator screws (2) and wave washers on clutch side of saw. 8.2 Remove vibration isolator screws (2) and wave washers on flywheel side of saw. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 61 2 bottom vibration isolators on the clutch side (circled). 8.4 Remove vibration isolators (4) from fuel tank if necessary. 8.5 Assemble in reverse order. NOTE: During assembly be careful to avoid kinking the fuel line. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 62: Crankcase

    603GC SHOP MANUAL This section covers the disassembly, inspection, and assembly of the crankcase seals and crankshaft bearings. 9. Remove outer crankshaft seal housing screws and wave washers. 9.2 Remove crankcase bolts (5). Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 63 Tap with mallet. NOTE: A nut should always be placed on a threaded shaft when pounding or pressing on it. 9.5 Remove the flywheel side crankcase seal with /2” (3 mm) socket. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 64 50° F (65.5° C). 9.7 Remove crankshaft from the clutch-side crankcase tap crankshaft with a plastic mallet. Suspend above work surface. Tap with plastic mallet. 9.8 Remove the bearing from the flywheel side of crankshaft. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 65 9.0 Assembly of crankcase. Clean mating crankcase faces. 9. Heat crankcase halves to 50° F. 9.2 Install bearing into crankcase halves. 9.3 Tap with bearing driver and mallet. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 66 19. CRANKCASE 603GC SHOP MANUAL 9.4 Repeat with other half. 9.5 Install crankshaft into clutch side of case. 9.6 Place clutch side crankcase seal on crankshaft. Tap lightly with bearing driver and mallet. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 67 603GC SHOP MANUAL 19. CRANKCASE 9.7 Coat crankcase gasket with 2-stroke engine oil. ® 9.8 Align crankcase gasket on flywheel side crankcase pins. 9.9 Place crankcase halves together and align crankcase pins. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 68 9.2 Install crankcase bolts. Use Loctite 242. ® Torque to 69 in-lbs. (8 Nm). 9.22 Install flywheel side crankcase seal – tap with bearing driver and mallet. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 69 603GC SHOP MANUAL 19. CRANKCASE 9.23 Assemble in reverse order Install outer crankshaft seal housing with 3 bolts and use Loctite 242. ® 9.24 Trim crankcase gasket flush. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 70: Bar Studs

    (Refer to section 3 &9 for detailed instructions) Remove side cover. Remove bar pad cover. Split the crankcase. Press out bar studs. Assemble in reverse order. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 71: Tensioner

    Unscrew tensioner to remove. Remove tensioner pin. Remove tensioner screw keeper. 2.3 Assemble in reverse order. NOTE: The tensioner is intended to perform as a fuse in high load or sudden impact situations. P/N 505393 Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 72: Carburetor Tuning

    Attempting to set the carburetor mixture to increase the speed or power beyond this limit may seriously damage the engine. • Always check the air filter, pre filter, fuel filter, and spark plug before making carburetor tunings and clean or replace if necessary Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 73 Insert the limiter cap puller blades into the release slots. Firmly hold the tool shaft while screwing in the puller screw until the screw head is against the puller shaft. Unscrew the puller screw. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 74 Pulse the throttle to help stabilize the system. Do not hold the saw at max rpm for more than 5 seconds or cylinder damage could occur. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 75 603GC SHOP MANUAL 22. CARBURETOR TUNING 22.9 When the carburetor is adjusted correctly set the limiter caps as shown with a /4” straight blade screwdriver. L = vertical H = horizontal Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 76: Idle Speed Adjustment

    Make sure the chain is properly tensioned. Turn T screw clockwise until chain begins to move. Back T screw out ½ turn. 23.2 If chain turns at idle: Back T screw out until chain stops moving. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 77: Troubleshooting Diagrams

    • Broken clutch spring. • Replace clutch spring. • Damaged shock absorber. • Replace shock absorbers. • Damaged or broken Excessive vibration. • Replace flywheel. flywheel fins. • Replace crankshaft. • Bent crankshaft. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 78 • Carburetor is tuned section. reaching the incorrectly. • Repair or replace fuel tank carburetor? • Plugged fuel tank breather. breather. Is the flywheel key • Loose flywheel. • Replace key and reinstall flywheel. sheared? Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 79: Troubleshooting: Fuel System Leaks

    Connect tube to the pressure gauge and to the fuel line. Pressurize the tube to 7 psi (0.5 bar). If the pressure does not maintain, separate the fuel line from the carburetor. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 80 Attach the pressure gauge and bulb to the fuel tank breather. Pressurize the tube to 7 psi (0.4 bar). The pressure should reduce to nearly 0 psi (0 bar) over about 3 seconds. Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 81 Clean parts with solvent or fuel. 25.7 Assemble in reverse order. Make sure duck bill opens easily. Make sure that the spring taper is oriented in the correct direction. Assemble by snapping cap in place. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 82: Troubleshooting: Crankcase Leaks

    7 psi (0.5 bar). 26.6 If the pressure does not remain the same, use soapy water to find the leak. NOTE: It is recommended that this test be performed after an engine rebuild. Copyright © May 24, 2006 ICS, Blount Inc.

  • Page 83: Appendix

    SPARK PLUG REFERENCE GUIDE ICS RESISTOR CHAMPION NGK RESISTOR BOSCH RESISTOR RESISTOR 7399 RCJ7Y BPMR7A WSR7F Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 84 603GC SHOP MANUAL Copyright © May 24, 2006 ICS, Blount Inc.
  • Page 85 ICS, Blount Inc. 4909 SE International Way Portland, Oregon 97222 TEL 800-32-240 FAX 503-653-4393 www.icsbestway.com 7537 Copyright © May 24, 2006 ICS, Blount Inc.

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