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Hitachi CS 33EDP Service Manual
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Hitachi CS 33EDP Service Manual

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PRODUCT NAME
Hitachi Engine Chain Saw
CS 33EDP
Models
CS 33ED
CONTENTS
TROUBLESHOOTING GUIDE ----------------------------------------------------------------------------------------------- 1
1. Troubleshooting and correction ------------------------------------------------------------------------------- 1
REPAIR GUIDE ------------------------------------------------------------------------------------------------------------------ 3
1. Precautions on maintenance, inspection and repair ----------------------------------------------------- 3
2. Inspection criteria for each section and consumable parts --------------------------------------------- 3
LIST Nos.
CS 33EDP: F050
CS 33ED: F049
Mar. 2014
Page
International Sales Division
C

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Summary of Contents for Hitachi CS 33EDP

  • Page 1 LIST Nos. CS 33EDP: F050 CS 33ED: F049 Mar. 2014 PRODUCT NAME Hitachi Engine Chain Saw CS 33EDP Models CS 33ED CONTENTS Page TROUBLESHOOTING GUIDE ----------------------------------------------------------------------------------------------- 1 1. Troubleshooting and correction ------------------------------------------------------------------------------- 1 REPAIR GUIDE ------------------------------------------------------------------------------------------------------------------ 3 1. Precautions on maintenance, inspection and repair ----------------------------------------------------- 3 2.
  • Page 2 TROUBLESHOOTING GUIDE 1. Troubleshooting and correction Trouble Cause Corrective action Faulty piston ring Seized piston and cylinder The crank shaft does Disassemble and Starter not rotate. replace. Faulty crank shaft bearings handle Magneto rotor contact with ignition coil cannot be Broken recoil starter pulled.
  • Page 3 Trouble Cause Corrective action Clogged fuel filter Clean or replace. The engine stalls. Insufficient warm-up Warm up. Poorly adjusted carburetor ass’y Adjust. Starts, but Clogged cylinder vent passage, when exhaust port and/or carbon-clogged accelerating Clean. Poor acceleration; muffler … no increase in Clogged air cleaner revolutions Chain brake set on...
  • Page 4 • After repair, confirm that the throttle lever returns to the idling state and the engine stops when the stop switch is turned to the stop position. 2. Inspection criteria for each section and consumable parts Model CS 33EDP/CS 33ED Item Idling revolutions 2,800 to 3,200 min...
  • Page 5 Repair flowchart Seized or broken piston ring Replace. Pull the starter handle. Is pulling possible? Seized piston or cylinder Replace. Seized or broken needle bearing of the crank Replace. shaft Seized ball bearing Replace. Magneto rotor contact with ignition coil Adjust.
  • Page 6 Dirty or faulty spark plug Clean/replace. Start the tool and set to Defective air gap Adjust. idling mode. Does the engine stop? Worn piston ring Replace. Worn piston Replace. Worn cylinder Replace. Expired oil seal service life Replace. Revolutions low for idling Adjust.
  • Page 7 Is chain oil discharged? Insufficient chain oil in the oil tank Supply oil. Clogged chain oil discharge port Clean. Clogged guide bar oil feed port Clean. Clogged oil filter Clean. Poorly adjusted chain oil discharge amount Adjust. Defective oil pump Replace.
  • Page 8 Inspection and repair procedures [Bold] numbers in the description below correspond to item numbers in the Parts List and exploded assembly diagram for the Model CS 33EDP. WARNING: Always stop the engine prior to disassembly or when replacing the saw chain.
  • Page 9 Disassembly and reassembly 1. Disassembly and reassembly of the cleaner and carburetor [Tools required] • Phillips screwdriver • Hex. bar wrench (4 mm) (1) Disassembly • Loosen the Cleaner Knob [142] and remove the Cleaner Cover [141]. • Remove the Choke Lever [153]. •...
  • Page 10 2. Disassembly and reassembly of the front handle [Tools required] • Phillips screwdriver • Flat-blade screwdriver • Box-end wrench 10 x 19 mm • Socket wrench (10 mm) (1) Disassembly • Use a Phillips screwdriver to remove the two Tapping Screws (W/Flange) D5 x 25 (Black) [193]. Use a flat-blade screwdriver to remove the Flange Nut M6 [165], and then use a box-end wrench 10 x 19 mm to remove the Front Handle [195].
  • Page 11 (a) Insert the Spring Holder [159] so that the first winding of the Antivibration Spring [161] does not protrude into the first winding of the Spring Holder [159]. (b) Apply 0.1 to 0.3 gram of CHEMITEC’s Chemiseal L-391 to the bolt of the Spring Holder [159] or the female screw of Flange Nut M6 [165].
  • Page 12 3. Disassembly and reassembly of the recoil starter ass’y [Tool required] • Phillips screwdriver (1) Disassembly • Use a Phillips screwdriver to loosen the four Tapping Screws (W/Flange) D4 x 20 (Black) [36], and then remove the Recoil Starter Ass’y (NS) [198] and Air Deflector Ass’y [188]. NOTE: During disassembly, the spiral spring may come off and jump out.
  • Page 13 (2) Reassembly Reassembly can be conducted by reversing the disassembly procedure. However, special attention should be given to the following items. • Mount the Spiral Spring (NS) [192] by • Mounting the Spiral Spring (NS) [192] matching the end hook of the spring to the groove of the Fan Case (NS) [187].
  • Page 14 • Mount the Cam Plate (NS) [190] so that the pawl of the plate interlocks with the hook at the end of spiral spring (B). Turn the Cam Plate (NS) [190] clockwise while holding the Reel (NS) [191] by hand, and confirm that the Cam Plate (NS) [190] is rewound by spring force.
  • Page 15 4. Disassembly and reassembly of the rear handle [Tools required] • Phillips screwdriver • Flat-blade screwdriver • Box-end wrench 10 x 19 mm (1) Disassembly • Remove the two Damper Set Bolts [152] and Flange Nut M6 [165] that connect the Rear Handle [166] and Engine Case Ass’y [51] by using a flat-blade screwdriver and a box-end wrench 10 x 19 mm.
  • Page 16 (2) Reassembly Reassembly can be conducted by reversing the disassembly procedure. However, special attention should be given to the following items. • When removing Cord (A) [83] and the Cord [78] from the Stop Switch [147], be sure to use new Cord (A) [83] and Cord [78] because their grip force of the terminals will be decreased.
  • Page 17 6. Disassembly and reassembly of the oil pump [Tools required] • Phillips screwdriver • Flat-blade screwdriver (for precision machinery) • Long-nose pliers (1) Disassembly Disassemble the oil pump after disassembling the Clutch [30]. • Remove the two Tapping Screws (W/Flange) D4 x 16 (Black) [140], and then remove the Engine Case Cover [157].
  • Page 18 • Oil pump Oil Pump Adjuster (ED) [39] Pump Ass’y [47] Tapping Screw Adjuster Spring [40] (W/Flange) D4 x 16 (Black) [1] Bolt Washer M4 (Black) [41] Oil Pump Cover [35] Adjuster Cap [42] Tapping Screw (W/Flange) D4 x 20 Needle Roller [43] (Black) [36] Pump Gear (ED) [44]...
  • Page 19 7. Disassembly and reassembly of the muffler [Tools required] • Phillips screwdriver • Hex. bar wrench (5 mm) (1) Disassembly • Remove the two Tapping Screws (W/Flange) D4 x 16 (Black) [1] that secure the Muffler Cover [2]. • Remove the two Hex. Socket Hd. Bolts M6 x 55 [61] that secure the Muffler [59], and then remove Bolt Washer M6 [62] and the Muffler Packing [60].
  • Page 20 8. Wiring diagram (1) See pages 20 and 23 for wiring of Cord (A) [83] and the Cord [78]. • Connect the terminal of the Ignition Coil [82] with the silver side of Cord (A) [83]. • Connect the round terminal side of the Cord [78] with the Ignition Coil [82] by using the Hex. Socket Hd. Bolt (W/Flange) M4 x 18 [79].
  • Page 21 • Wiring diagram and fuel pipe connection chart (1) Cleaner Support [8] Carburetor Ass’y [9] Grommet [155] Stop Switch [147] Intake [27] Fuel Pipe (FKM) [163] Rear Handle [166] Engine Case Cover [157] Fuel Pipe L220 [164] Idle Sponge [167] Pump Ass’y [47] Fuel Grommet Fuel Pipe 2.5 x 4 x 90 [168]...
  • Page 22 • Fuel pipe connection chart (2) Fuel Pipe L220 [164] Fuel Pipe (FKM) [163] Fuel Grommet [162] Idle Sponge [167] Engine Case Ass’y [51] Priming Pump Comp. [169] Engine Case Ass’y [51] A - A B - B Fuel Pipe (FKM) [163] Fuel Grommet (A) [171] 152 to 162 mm Fuel Pipe L220 [164]...
  • Page 23 10. Disassembly and reassembly of the engine ass’y [Tools required] • Long-nose pliers • Hex. bar wrench (5 mm) • Box-end wrench 10 x 19 mm (1) Disassembly Remove the recoil starter, cleaner, muffler, clutch, and pump ass’y before disassembling the engine ass’y.
  • Page 24 11. Disassembly and reassembly of the ignition coil and magneto rotor [Tools required] • J-363 jig (No. 6694822) (8 x 120 handle) • J-357 (No. 6695737) (center bolt) • J-356 jig (No. 6695736) (complete rotor extraction tool) • J-358 jig (No. 6695738) (stepped bolt 6 mm) •...
  • Page 25 (2) Reassembly Reassembly can be conducted by reversing the disassembly procedure. However, special attention should be given to the following items. • Replace the two Retaining Rings D4 [98] with new ones as they are deformed at disassembly. • Stop rotation of the Magneto Sub Ass’y [97] by using the hook wrench (for 85-92), and then tighten Flywheel Nut M7 [103] to the specified torque.
  • Page 26 CAUTION: Any soot remaining in the Cylinder [74] may cause contact between Piston (M) [86] and the Cylinder [74], resulting in a malfunction. • Completely remove liquid packing (ThreeBond 1207C) on the contacting surfaces of the Crank Case [96] and Cylinder [74]. At that time, be careful not to damage the contacting surfaces. •...
  • Page 27 (2) Reassembly Reassembly can be conducted by reversing the disassembly procedure. However, special attention should be given to the following items. • Do not reuse the Circlips [85]. • When removing Piston (M) [86], remove any carbon deposits on top of Piston (M) [86] by being careful not to scratch the piston surface, and then use gasoline to carefully clean Piston (M) [86].
  • Page 28 • Side case Side Case [121] Brake Support Plate [122] Brake Lever Spring [123] Brake Handle [124] Brake Link Cover [126] Chain Puller [130] Guide Plate (B) [131] Tapping Screw D4 x 10 [134] Tapping Screw D3 [135] Brake Link [137] Brake Spring [136] Brake Band [138] Tapping Screw (W/Flange)
  • Page 29 Tightening torque Unit: N•m {kgf•cm} Location Q’ty Part name Tightening torque Recoil Tapping Screw (W/Flange) Recoil Starter Ass’y (NS) [198] 1.5 to 2.5 {15 to 25} D4 x 20 (Black) [36] starter Hex. Socket Hd. Bolt (W/Flange) Ignition Coil [82] 3.0 to 4.0 {31 to 41} M4 x 18 [79] Electrical...
  • Page 30 Confirmation after reassembly 1. Check the following before starting the engine. • No fuel or chain oil leakage is allowed. • Confirm that the crank shaft rotates and there is compression when pulling the starter handle. • Perform priming ten times and then confirm that the priming pump is full of fuel. •...
  • Page 31 LIST NO.F050 ENGINE ENGINE CHAIN SAW 2014·3·17 Model CS 33EDP (E1)
  • Page 32 CS 33EDP 183 187 189...
  • Page 33 PARTS CS 33EDP ITEM DESCRIPTION REMARKS CODE NO. USED 305812 TAPPING SCREW (W/FLANGE) D4 X 16 (BLACK) 6696821 MUFFLER COVER 6698864 CAUTION LABEL (HOT) 6699969 CLEANER ELEMENT (B) 6699968 CLEANER ELEMENT (A) 949824 HEX. SOCKET HD. BOLT M5 X 45 (10 PCS.)
  • Page 34 PARTS CS 33EDP ITEM DESCRIPTION REMARKS CODE NO. USED 6600084 ENGINE CASE ASS'Y INCLUD.64,65,172 6600048 SCREW (W/WASHERS) M4 (BLACK) 6698861 PACKING PLATE 6698862 MUFFLER SPECIAL PACKING (S) 6696816 EXHAUST PIPE 6696818 MUFFLER SPECIAL PACKING 6696817 GAUZE FIXING PLATE 6696815 MUFFLER GAUZE...
  • Page 35 PARTS CS 33EDP ITEM DESCRIPTION REMARKS CODE NO. USED 6685335 STARTER PAWL SPRING 6685334 STARTER PAWL 6696880 BOLT WASHER D7 6696879 FLYWHEEL NUT M7 6697599 GUIDE PLATE A 958715 TAPPING SCREW D4 X 10 6600088 SIDE CASE FOR EUROPE 6600087...
  • Page 36 PARTS CS 33EDP ITEM DESCRIPTION REMARKS CODE NO. USED 6698787 GROMMET 6698409 SPRING HOLDER 6699962 DAMPER SET BOLT (A) 6698428 ANTIVIBRATION SPRING 6696167 FUEL GROMMET 6699975 FUEL PIPE 6600059 FUEL PIPE (FKM) FOR USA 6600055 FUEL PIPE L220 329934 FLANGE NUT M6...
  • Page 37 STANDARD ACCESSORIES CS 33EDP ITEM CODE NO. DESCRIPTION REMARKS USED 6685439 CHAIN COVER 14' 6685440 CHAIN COVER 16' 6685402 COMBI BOX SPANNER 10/19MM 3 - 14 *ALTERNATIVE PARTS Printed in Japan - 7 - (140317N)
  • Page 38 LIST NO.F049 ENGINE ENGINE CHAIN SAW 2014·3·17 Model CS 33ED (E1)
  • Page 39 CS 33ED 181 185 187...
  • Page 40 PARTS CS 33ED ITEM DESCRIPTION REMARKS CODE NO. USED 305812 TAPPING SCREW (W/FLANGE) D4 X 16 (BLACK) 6696821 MUFFLER COVER 6698864 CAUTION LABEL (HOT) 6699969 CLEANER ELEMENT (B) 6699968 CLEANER ELEMENT (A) 949824 HEX. SOCKET HD. BOLT M5 X 45 (10 PCS.) 6685408 WASHER 5 6699966...
  • Page 41 PARTS CS 33ED ITEM DESCRIPTION REMARKS CODE NO. USED 6600084 ENGINE CASE ASS'Y NCLUD.64,65,170 6600048 SCREW (W/WASHERS) M4 (BLACK) 6698861 PACKING PLATE 6698862 MUFFLER SPECIAL PACKING (S) 6696816 EXHAUST PIPE 6696818 MUFFLER SPECIAL PACKING 6696817 GAUZE FIXING PLATE 6696815 MUFFLER GAUZE 6600050 MUFFLER 6696820...
  • Page 42 PARTS CS 33ED ITEM DESCRIPTION REMARKS CODE NO. USED 6685335 STARTER PAWL SPRING 6685334 STARTER PAWL 6696880 BOLT WASHER D7 6696879 FLYWHEEL NUT M7 6697599 GUIDE PLATE A 958715 TAPPING SCREW D4 X 10 6600086 SIDE CASE 6696782 BRAKE SUPPORT PLATE 6696783 BRAKE LEVER SPRING 6699972...
  • Page 43 PARTS CS 33ED ITEM DESCRIPTION REMARKS CODE NO. USED 329934 FLANGE NUT M6 6699963 REAR HANDLE 6600056 IDLE SPONGE 6685267 FUEL PIPE 2.5 X 4 X 90 6685139 PRIMING PUMP COMP. 6600047 PROTECTION SHEET 6685308 FUEL GROMMET (A) 6685370 AIR VENT VALVE (B) 6698456 FLANGED TAPPING SCREW D5 X 15 6699973...
  • Page 44 STANDARD ACCESSORIES CS 33ED ITEM CODE NO. DESCRIPTION REMARKS USED 6685439 CHAIN COVER 14' 6685440 CHAIN COVER 16' 6685402 COMBI BOX SPANNER 10/19MM 3 - 14 *ALTERNATIVE PARTS Printed in Japan - 7 - (140317N)

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