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EMAK GS35 Workshop Manual
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EMAK GS35 Workshop Manual

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WORKSHOP MANUAL
Chainsaw
GS35 – GS350 – MT350 – MT3500

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Summary of Contents for EMAK GS35

  • Page 1 WORKSHOP MANUAL Chainsaw GS35 – GS350 – MT350 – MT3500...
  • Page 2 General failures’ analysis GS35 – GS350 – MT350 – MT3500 chainsaws...

  • Page 3: Suggested Tools

    II . Compression tester: to check thermal group II I. Electronic tachometer: for 2 and 4 stroke engines, measurement range from 100 to 30,000 RPM p/n 3055125 III. p/n 001000392A p/n 001000785 GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 4 Carburetion tuning Ignition system Starter housing inspection Spark plug inspection Tightening torques Spark test Flywheel-coil air gap inspection Flywheel key inspection Trouble shooting The engine does not start Low performance Additional problems GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 5 10 times • Verify that compression value in not less than 7,5 bar – 110 psi • value higher than – psi, start inspection d), if lower, carry on with inspection b) GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 6 Attention: de-grease the contact surfaces of the cylinder and the cover. Use a liquid gasket to re-seal, be careful with the quantity so it does not pollute internal engine parts GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 7 The arrow on the top of the cylinder points towards the exhaust port. Tightening torque cylinder - screws 0,6 Kgm (52,08 in lb) + Loctite 243 Warning: The arrow must point towards the exhaust. GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 8 • Use Loctite 243 to tighten plastic component Tightening toque cover-basement 0,4 kgm (34,72 in lb) + Loctite 243 Tightening torque Cover 0,4 kgm (34,72 in lb) + Loctite 243 GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 9 Verify the conditions of the muffler (dirt / oily) change if necessary Tightening torque cover muffler-muffler 0,6 kgm (53,10 in lb) + Loctite 243 Non-catalytic muffler If the muffler is blocked or damaged, clean or replace it GS35 – GS350 – MT350 – MT3500 chainsaws Back to index...

  • Page 10: Fuel System

    Apply the pressure gauge at the fuel line. Check any possible leakage at 0,5 bar • If the pressure is not stable, it may indicate worn fuel system or loose at the carburetor parts Go to Carburetor inspection GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 11 • Dismount the breather and check the components • Apply the pressure gauge (I), supplied with Emak tool kit, at the breather valve and verify the correct working in both ways. Replace or clean if necessary p/n 1043900 Breather sealing test: 0,2 –...
  • Page 12 Refit the muffle with the 3 screws M5x25 p/n 001000018 Warning: During the seal test use only a light torque of 0,4 Kgm (35 in lb) n°3 screws M5x25 p/n 094500388A GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 13 General failures’ analysis • Fit the pressure gauge (V) to the inlet and apply 0.5 bar. The pressure should not descend p/n 1043900 GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 14 Check the manifolds for wear. Verify that the manifold’s rubber is not deteriorated or hardened and check that there are no cuts or holes. Replace if necessary Warning! Make sure the impulse path is correctly inserted into the cylinder hole. GS35 – GS350 – MT350 – MT3500 chainsaws Back to index...

  • Page 15: Ignition System

    ø 3,0 x 960 mm Starter housing inspection Remove housing. Inspect parts for wear. If necessary clean or replace Counterclockwise Clockwise turn turn to release to wind the the spring spring Important: grease moving parts GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 16 (resistive – R) are correct • Check that the spark plug pipe is correctly connected, cables are not damaged and coil works properly RCJ-7Y (0,5 – 0,7 mm) cod. 001000515R GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 17 Inspect key way’s condition and position. If necessary, replace or adjust Tightening torque flywheel-nut 1,9 kgm (168,2 in lb) p/n 001000004 p/n 001000782 Tightening torque coil-screws 0,4 kgm (34,72 in lb) + Loctite 243 GS35 – GS350 – MT350 – MT3500 chainsaws Back to index...
  • Page 18 Lubrication and bar maintenance Oil tank breather inspection • Clean with compressed air • Verify the quality of the bar and chain oil Warning! Make sure the O-ring (I) is seated before inserting the tube GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 19 Check the sprocket/power mate ring wear Check brake band, plate periodically. Replacement is suggested every protection’s rubber wear. This must 100 hrs or before changed if the wear limit is less than 0,6 mm GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 20 Use the piston stop (I) in the spark plug hole. Remove the clutch anticlockwise with tool (II) Tightening torque clutch 2 Kgm (177,0 in lb) + Loctite 243 p/n 3055133 p/n 001000684 Warning! Make sure the spacer washer is fitted (I) GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 21 Inspect the supply hose and filter, clean. Tightening torque screws oil pump 0,45 kgm (39,83 in lb) + Loctite 243 Warning! Use a liquid gasket to seal in the hose to the saw body GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 22 Photo 1 touches the crank seat (Photo 1-2). • Screw in the tool until stop (I) to give the correct pitch to the worm gear. Photo 2 GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 23 General failures’ analysis Shock absorber replacement In case of wear or breakage replace the parts GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 24 Keep the rail and the lubrication holes cleaned • Check the parallelism of the guide bar and for sharp metal edges • Turn the bar every 8 hrs to grant uniform wear Keep clean GS35 – GS350 – MT350 – MT3500 chainsaws Back to index...
  • Page 25 Support air filter-carburetor compressed air 0,4 Kgm (34,72 in lb) • Cloth air filter (B): shake it and + Loctite 243 clean it with a soft brush • Replace the filter when damaged GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 26 Check and clean all components (diaphragm, caliper. Adjust if necessary needle, filter). Use the repair kit to replace worn components. If the carburetor is oxidized, replace Needle REPLACE GS35 – GS350 – MT350 – MT3500 chainsaws Back to fuel system...
  • Page 27 General failures’ analysis Suggested tools for carburetor setting Special screwdriver (I): for adjustment the jets “L” e “H” Insert the special screwdriver (as shown on the photo) and adjust the jets p/n 3055130 GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 28 Adjustment of the jet H for wide open throttle operation whit bar (standard 16” - 41 cm) and chain: 10600 RPM with the new motor and 12100 RMP with run-in engine GS35 – GS350 – MT350 – MT3500 chainsaws Back to index...

  • Page 29: Tightening Torques

    * = Loctite 243 G = Grease 2 – 177,0 O = Oil 0,4 - 34,72 * 0,25 – 22,13 * 0,4 - 34,72 * 1,9 - 168,2 * 0,6 - 52,08 * GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 30 0,6 - 52,08 * 0,25 – 22,13 * 0,2 – 17,7 * Tightening torques (kgm) – (in lb) / lubrication * = Loctite 243 G = Grease 0,4 - 34,72 * O = Oil GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 31 0,04 – 3,54 0,4 – 34,72 * 0,4 - 34,72 * Tightening torques (kgm) – (in lb) / lubrication * = Loctite 243 0,35 – 30,98 * G = Grease O = Oil GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 32 * = Loctite 243 G = Grease O = Oil 0,5 – 44,25 * 0,45 - 39,83 * 1,5 – 132,76 2 - 177,0 * 0,25 - 22,13 * GS35 – GS350 – MT350 – MT3500 chainsaws Back to index...
  • Page 33 Wrong carburetion Wrong L and H setting Adjust the carburetion according Section 5 setting or erratic the above Carburetor problems Carburetor inspection Section 5 throttle response Manifold problems Manifold tightness Section 2 GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 34 Engine Water in the fuel Clean the carburetor and replace Section 5 performance is fuel not stable Seizure Replace the components Section 1 Faulty carburetor or diaphragm Check and replace Section 5 GS35 – GS350 – MT350 – MT3500 chainsaws...
  • Page 35 Replace sprocket Section 4 work correctly or does not rotate The chain is not sharp Sharpen the chain Owner’s manual Chain to tight Correct tension/assembly Owner’s bar and chain manual GS35 – GS350 – MT350 – MT3500 chainsaws Back to index...

This manual is also suitable for:

Mt350Gs350Mt3500