Dolmar PS-34 Repair Manual
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Dolmar PS-34 Repair Manual

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Table of Contents

See also: Instruction Manual , Owner's and Safety Manual
Repair Manual
11/99
PS-34
Page 1

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Table of Contents
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Summary of Contents for Dolmar PS-34

  • Page 1 Repair Manual 11/99 PS-34 Page 1...

  • Page 2: Table Of Contents

    Table of contents Technical Data Index page Special tools Repair instructions, general Chain brake Centrifugal clutch Oil pump 9 -11 Ignition system 11-13 Starting system 14-15 Carburetor / intake system 16-19 Rubber buffer, handles Fuel tank, exhaust Pistons and cylinders 22-23 Crankcase, crankshaft 24-25...

  • Page 3: Technical Data

    Fuel tank capacity 0.37 Chain oil tank capacity 0.25 Mixture ratio (fuel/two-stroke oil) - when using DOLMAR oil 50 : 1 - when using other oils 40 : 1 Chain brake engages manually or in case of kickback Chain speed...

  • Page 4: Special Tools

    Special tools Setting gauge for split size Assembly wrench for Flywheel / ignition armature clutch blades 944 500 890 944 500 695 Assembly and disassembly tool for Flywheel remover oil pump worm 950 500 060 944 500 880 Assembly sleeve 944 500 580 Torx bits unit T27 150 mm Piston stop wedge 944 500 865...

  • Page 5: Repair Instructions, General

    General information on repairing the PS-34 The PS-34 chain saw is a small reasonably chain saw. The objective in developing this saw was to provide a low-priced appliance that could be assembled as easily as possible. Many of the design features are therefore based on the concept of easy assembly.

  • Page 6: Chain Brake

    01 Chain brake 01-01 Removing the chain brake 01-01 Removing the chain brake Remove sprocket guard, nose bar and chair, Carefully lever out 4 pivots (x) on the clear the chain intake area. cover plate from the housing sleeves using a long screw driver. 01-01 Removing the chain brake 01-01 Removing the chain brake The pivots (1) are fixed by a thicker...
  • Page 7 01 Chain brake / clutch drum 01-01 Removing the chain brake 01-01 Checking the brake spring Push cylindrical pin (1) from housing and Check brake spring for wear and dam- remove brake spring holder (2) with joint age. Note: the chain brake is a safety piece.

  • Page 8: Centrifugal Clutch

    02-01 Mounting the centrifugal clutch 02-01 Mounting the centrifugal clutch Blade (5) + (6) w. DOLMAR marking Tighten blades individually with the assem- pointing towards the motor, blade (7) with bly tool 944.500.695 to 20 +5 Nm.

  • Page 9: Oil Pump

    03 Oil pump 03-02 Removing the oil pump 03-02 Removing the oil pump To remove the oil pump, remove the The oil pump piston is driven by the worm (1) suction hose and cylinder, see 10-01. on the crankshaft. The pivot in the holder (2) fixes the oil pump in the right position and controls the lifting movement of the piston.

  • Page 10: Oil Pump

    03 Oil pump 03-04 Removing the oil suction pipe 03-04 Replacing the oil suction pipe Remove the oil suction pipe from the Grease the flange areas (x) for better housing. sealing and easier assembly with silicone paste 980.001.100. 03-04 Replacing the oil suction pipe 03-04 Installing the oil pump Insert guide tie (1) into the housing Position oil pump on worm, insert holder...

  • Page 11: Ignition System

    04 Ignition system 04-04 Removing the spark plug 04-04 Replacing the spark plug Remove motor hood. Remove spark plug Tighten the spark plug using universal cap. Loosen and unscrew the spark plug with wrench 941.719.131 only or max. 20 Nm if a universal wrench 941 719 131 or similar other tools are used.
  • Page 12 04 Ignition system, flywheel 04-04 Removing the ignition system 04-04 Removing the flywheel Pull off the short-circuit cable flat plug and Block motor with piston stop wedge (x) unscrew the 2 screws of the ignition 944.602.001 and loosen flywheel nut. system.
  • Page 13 04 Ignition system, short-circuit cable 04-04 Replacing the short-circuit cable 04-04 Replacing the short-circuit cable The 2 core short-circuit cable connects the The short-circuit cable is taken under the contacts of the ignition coil (1) and earth (2) carburetor sleeve in a clamping strip to the with the stop switch (3).

  • Page 14: Starting System

    05 Starting system 05-02 Removing the starting system 05-02 Removing the starting system Remove the motor hood and tubular Loosen 4 screws and remove starter handle as described in introduction. cover. 05-02 Removing the starting system 05-02 Removing the cable drum Pull out the starter rope as far as it will go Pull out starter rope between cable drum and hold the drum tight.
  • Page 15 05 Starting system 05-02 Inserting the rewind spring 05-02 Mounting the starter b) as spare part. Insert the spring unit secured Insert cable drum with knotted starter with wire, insert spring eye in housing and rope, let the spring click into the carrier push spring into housing pocket.

  • Page 16: Carburetor / Intake System

    06 Carburetor / intake system 06-01 Setting the carburetor 06-01 Setting the carburetor For the basic setting, screw in both screws as far as The injector needles L + H and the stop they will go. Then unscrew both screws 1 turn. If the screw S can be reached via holes in the motor turns too quickly (taking the chain with it) or too tubular handle strut.
  • Page 17 06 Carburetor / intake system 06-02 Removing the carburetor 06-02 Removing the carburetor Pull the contact spring (1) of the choke Push the choke lever in the direction of ‘Stop’ lever from the eye in the motor housing in order to swing the arm out of the housing using pliers.
  • Page 18 06 Carburetor / intake system 06-02 Removing the carburetor 06-02 Removing the carburetor Loosen 2 horizontal screws (1). The right Loosen the two horizontal screws until the heads are exactly on a level with the screw is reached through the slit between external contour of the connecting muff the tank and the motor housing.
  • Page 19 06 Carburetor / intake system 06-02 Installing the carburetor 06-02 Installing the carburetor Position the connecting muff so that it is slightly Insert the connecting muff with a slight tilted to the left so that the back right-hand twist to the right. double strut of the connecting muff (1) is posi- tioned behind the plate of the carburetor clip.

  • Page 20: Rubber Buffer, Handles

    08 Rubber buffer /handles 08-02 Removing the rubber buffer 08-02 Rubber buffers Remove 2 screws (1) and sleeves (2). 3 hollow rubber buffers (4) on the clutch Fold back handle to the side so that the side are inserted in the housing. throttle linkage slides out of the throttle guide.

  • Page 21: Fuel Tank, Exhaust

    09 Fuel tank / exhaust 09-01 Removing the fuel tank 09-01 Removing the fuel tank Pull the fuel line and primer line off the Remove the tubular handle, motor hood connector on the carburetor and primer and starter cover as described elsewhere. using pliers.

  • Page 22: Pistons And Cylinders

    10 Piston and cylinder 10-01 Removing the driving mechanism 10-01 Removing the driving mechanism Remove the motor hood and tubular han- Remove the connecting muff as described dle as described in introduction. in 06-02. 10-01 Removing the driving mechanism 10-01 Removing the driving mechanism Only remove ignition and flywheel if cylin- Loosen and unscrew the 4 cylinder screws.
  • Page 23 To prevent damage during mounting, the pulse wire (4) in the connecting muff should be lightly greased before assembly. For greasing, please use oil or DOLMAR sili- cone paste, order no. 980.007.100. Note: If you use silicone paste, make sure that the pulse opening (3) is not blocked.

  • Page 24: Crankcase, Crankshaft

    11 Crankshaft 10-01 Replacing the piston /crankshaft 10-01 Replacing the piston/crankshaft Check running surfaces of the piston (1), Check radial sealing rings and crankshaft connecting rod bearing (2), crankshaft bearings; if necessary pull off crankshaft bear- bearing (3) and piston bolt (4) for wear or ings and replace radial sealing rings (5) by new damage.
  • Page 25 11 Crankshaft 10-01 Mounting the driving mechanism 10-01 Mounting the driving mechanism Position piston ring joint (2) in the direction of Replace the crank case seal (1) and the intake/carburetor side, the arrow on the insert dry without sealant. piston then points towards the exhaust, the oil pump worm points towards the right if the carburetor side is upwards.

  • Page 26: Torques

    Torques Type torque Exhaust at cylinder 12,0 -0,5 Cylinder 12,0 -1,0 Ignition -0,5 Tubular handle -0,5 Carburetor, vertical -0,5 Carburetor, horizontal -0,5 Flywheel 20,0 +2,5 Clutch blades 20,0 +5,0 Spark plug 20,0 ± 3,0 Starter cover +0,5 Tubular handle ± 0,5 Page 26...
  • Page 27 Notes Page 27...
  • Page 28 DOLMAR GmbH • Postfach 70 04 20 • 22004 Hamburg Form-Nr. 995 725 020 Page 28...

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