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Jonsered CS2186 Workshop Manual

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CS2 2 1 1 8 8 6 6
CS
CS2 2 1 1 8 8 6 6
CS
Workshop manual
108 88 65-26

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Summary of Contents for Jonsered CS2186

  • Page 1 CS2 2 1 1 8 8 6 6 CS2 2 1 1 8 8 6 6 Workshop manual 108 88 65-26...

  • Page 3: Table Of Contents

    CONTENTS Introduction ..........3 Safety regulations ........4 Symbols ............5 Technical data ..........6 Service tools ..........8 Trouble shooting ........10 Service information........12 Safety equipment ........14 Starter............19 Electrical system ........21 Centrifugal clutch ........26 Lubrication system ........

  • Page 5: Introduction

    Workshop Manual. Usage is evident designated A, and B, etc. from respective sections. The figures are number 1, 2 etc. The position references figure numbers restart in each new Always use Jonsered original parts: section. • Spare parts •...

  • Page 6: Safety Regulations

    SAFETY REGULATIONS Special instructions General instructions The workshop where chainsaw repairs are to be done must The fuel used in the chainsaw has the following hazardous be equipped with safety equipment as set out in local properties: regulations. 1. The fluid and its fumes are poisonous. 2.

  • Page 7: Symbols

    SYMBOLS Symbols on the chainsaw Symbols in this Workshop Manual The following symbols are moulded into the chainsaw casing. This symbol indicates a risk of personal injury if instructions are not followed. Choke Switch for hand grip heater Fuel filler STOP Stop button Screw to adjust chain lubrication...

  • Page 8: Technical Data

    TECHNICAL DATA Displacement Bore Stroke Max. power/rpm / cubic inch Ømm/Øinch mm/inch kW/hp/ rpm CS2186 84.7cm /5.2 54mm/2.1" 3,7/1,5 4.6/6.3, 9600rpm Spark plug gap Ignition system Air gap Carburettor type mm/inch mm/inch CS2186 0,5/0,02 FHP/CD 0.30mm/X Tilotson HS 290 Guide bar length Chain speed at max.
  • Page 9 TECHNICAL DATA Idling speed Engage speed Max. speed Spark plug CS2186 2 700 3500 13000 Champion RCJ 7Y Fuel tank volume Oil pump capacity Oil tank volume Automatic oil pump Litres/US pint /min Litres/US pint CS2186 0,90/1,9 4-20/8000 rpm 0,50/1,1...

  • Page 10: Service Tools

    SERVICE TOOLS 8 – English...
  • Page 11 SERVICE TOOLS Item Description Used for Order No. Piston stop Locking the crankshaft 502 54 15-01 Cover plate, inlet Sealing the intake manifold 502 54 05-01 Cover plate, exhaust Sealing the exhaust port 502 71 39-01 The tools listed here are service Pressure tester Produce pressure when tools intended for use on the...

  • Page 12: Trouble Shooting

    TROUBLE SHOOTING Trouble shooting chart The different faults that can occur on the chainsaw are divided into four groups as follows. Within each group possible operating faults are listed to the left while the probable fault alternatives are listed to the right. The most likely fault is listed first, etc.
  • Page 13 TROUBLE SHOOTING Acceleration and retardation High speed Does not accelerate Adjust the L-screw Will not run at full Adjust H-screw throttle Blocked air filter Adjust the H-screw Blocked air filter Tank ventilator blocked Blocked fuel filter Tank ventilator blocked Blocked fuel line Blocked fuel filter Blocked fuel line Loose or faulty fuel pipe...

  • Page 14: Service Information

    SERVICE DATA Key to diagrams The figures next to parts screwed on indicate the tightening torque Nm. = Lubricate with two-stroke oil. = Lubricate with chain oil. = Lubricate with grease. 12 – English...
  • Page 15 SERVICE DATA English – 13...

  • Page 16: Safety Equipment

    SAFETY EQUIPMENT Chain brake Dismantling 1. Dismantle the following parts first: • Chain and bar. See the Operator Guide. • Centrifugal clutch. See page 23. 2. Push the hand guard forward so that the chain brake is on. See fig. 1. 3.
  • Page 17 SAFETY EQUIPMENT Inspection Clean and inspect all parts. The thickness of the brake strap must nowhere be less than 0.8 mm. See fig. 7. Assembly Assemble the chain brake as follows: 1. Fit the toggle joint and brake strap. See fig. 7. Fig.
  • Page 18 SAFETY EQUIPMENT Function check WARNING! After repair, the chain brake must be checked according to the following instructions. For this test, the engine must not be running. Check that the chain brake cuts in as follows: 1. Hold the chain saw over a stable surface as shown in fig. 10. The distance between the bar and surface is given in the table below.
  • Page 19 SAFETY EQUIPMENT Muffler WARNING! Do not touch the muffler until it has cooled. Risk of burn injuries. Dismantling 1. Remove the two lower M5 bolts and the muffler’s two M6 bolts. See fig. 9 2. Remove the gasket and cooling plate. See fig. 9 3.
  • Page 20 SAFETY EQUIPMENT Throttle lock Dismantling 1. Remove the hand grip insert (C). See fig. 12. 2. Remove the throttle lock pivot (A) with the help of a driver. See fig. 12. 3. Press apart with a screwdriver or the like the throttle lock/ control and take out the throttle lock from the recess in the hand grip.

  • Page 21: Starter

    STARTER Starter Dismantling 1. Remove the four bolts holding the starter to the crankcase and remove the starter. See fig. 1. 2. Pull out the handle 20-30 cm and take out the cord from the slot in the starter pulley. See fig. 2. 3.
  • Page 22 STARTER Assembly WARNING! If the spring is tensioned on the starter pulley it can fly up and cause personal injury. Wear protective glasses. 1. If a new spring is to fitted, place the new spring with steel wire so that the end loop comes over the peg (A) in starter pulley.

  • Page 23: Electrical System

    ELECTRICAL SYSTEM Ignition system Dismantling 1. Remove the cylinder cover and starter unit. See page 16. 2. Release the blue lead (A) (which connects to the stop button) from the ignition module (B). See fig. 1. 3. Remove the ignition cable (C) from the spark plug and release both cables from the cable guide (D), and lift off the cable guide.
  • Page 24 ELECTRICAL SYSTEM Assembly Assemble the ignition system as follows: 1. Fit the flywheel on the spindle. Turn it gently until the key on the flywheel mates with the recess in the shaft. 2. Fit the flywheel washer and nut. Tighten the nut to 35 Nm. See fig.
  • Page 25 ELECTRICAL SYSTEM Hand grip heater and carburettor heater CS2186 Some chainsaws are fitted with hand grip heaters and carburettor heaters, and consist of the following parts: • Generator. • Switch. • Heating element in rear hand grip. • Front hand grip with heating element.
  • Page 26 ELECTRICAL SYSTEM Replacing the generator 1. The following components must be removed before the generator can be replaced: A. Starter. See page 17. B. Flywheel. See page 19. 2. Remove the bolts for the rear damper element (A) and the travel inhibiting bolts (B). See fig. 14. 3.
  • Page 27 ELECTRICAL SYSTEM Replacing the heating element in the tank unit 1. Remove the rear hand grip insert. See fig. 18. 2. Remove the cable connections. See fig. 18. 3. Fit the heating element and cable connections. Fig. 18 Replacing the front hand grip 1.

  • Page 28: Centrifugal Clutch

    CENTRIFUGAL CLUTCH Centrifugal clutch Dismantling When dismantling the centrifugal clutch the chain brake must be in the off position. 1. Remove the cylinder cover, chain and bar. See the instruction book. 2. Remove the chain guide plate by unscrewing the bolt (A).
  • Page 29 CENTRIFUGAL CLUTCH Cleaning and inspection Clean all components and check the following: 1. The lining thickness on the clutch shoes must not be less than 3.5 mm at the most worn point. See fig. 5. min 3.5 mm To avoid imbalance all the clutch shoes should be replaced at the same time.

  • Page 30: Lubrication System

    LUBRICATION SYSTEM Lubrication system WARNING! Insufficient lubrication of the chain can result in the chain breaking, which can cause serious or even life-threatening injury. The lubrication system consists of the following parts: • Oil pump. Fig. 1 • Suction pipe with filter. •...
  • Page 31 The table (right) shows the number of turns from the home 18"-24" position for respective bar lengths. The table applies to 24"- Jonsered chain oil. If a different oil is used the screw should be unscrewed an additional turn in the first two cases. English – 29...

  • Page 32: Carburettor

    CARBURETTOR Carburettor WARNING! The fuel used in the chainsaw has the following hazardous properties: The fluid and its fumes are poisonous. Can cause skin irritation. Is highly inflammable. Description The drawings accompanying this description do not correspond with the carburettor on the chainsaw. They only show the principle for the design and function.
  • Page 33 CARBURETTOR Function The carburettor operates differently in the following modes: • Cold start mode • Idling mode • Part throttle mode • Full throttle mode In the cold start mode (fig. 4) the choke valve (D) is fully closed. This increases the vacuum in the carburettor so that fuel is sucked more easily from all the diffuser jets (E, F and G).
  • Page 34 CARBURETTOR Dismantling WARNING! The fuel used in the chainsaw has the following hazardous properties: The fluid and its fumes are poisonous. Can cause skin irritation. Is highly inflammable. Dismantling 1. Remove the cylinder cover and air filter. 2. Remove the carburettor control (A) by pushing it towards the carburettor and lifting.
  • Page 35 CARBURETTOR Cleaning and inspection 2. That there is no play on the throttle and choke valve shafts. WARNING! Fuel has the following hazardous 3. The needle valves and lever are not worn at M in fig. 11. properties: The fluid and its fumes are poisonous. 4.
  • Page 36 CARBURETTOR Assembly Where no figure is referred to, see exploded diagram 12 on the previous page. Maintain a high level of cleanliness when assembling the carburettor. The slightest contamination can result in running problems. 1. If the throttle and choke valves, together with levers and springs were removed, they should be refitted.
  • Page 37 CARBURETTOR Pressure testing Pressure testing should be carried out with the carburettor fully assembled. Testing should always be carried out after the carburettor has been repaired, but it can also be carried out as trouble shooting before dismantling the carburettor. See fig.
  • Page 38 “run-in”. First adjust the L-jet, then the idling speed’s T-screw, and finally the H-jet. The following speed recommendations apply: Max. overspeed Idling speed CS2186 13 000 rpm 2 700 rpm 36 – English...
  • Page 39 CARBURETTOR Low speed jet L Find the highest idling speed by slowly turning the low speed screw clockwise then anticlockwise. When the highest speed + 1/4 has been found, turn the L-screw anticlockwise 1/8 - 1/4 of a turn. NOTE! If the chain goes round at idling speed the T-screw should be turned anticlockwise until it stops.

  • Page 40: Tank Unit

    TANK UNIT Tank unit WARNING! The fuel used in the chainsaw has the following hazardous properties: 1. The fluid and its fumes are poisonous. 2. Can cause skin irritation. 3. Is highly inflammable. Dismantling 1. Drain off the fuel from the tank. 2.
  • Page 41 TANK UNIT Cleaning and inspection Clean all parts and check that the fuel pipe is intact. Assembly 1. If the chainsaw is fitted with hand grip heating, fit the heating element if it has been removed. See page 21 and 23. 2.

  • Page 42: Anti-Vibration System

    ANTI-VIBRATION SYSTEM Anti-vibration system WARNING! The fuel used in the chainsaw has the following hazardous properties: The fluid and its fumes are poisonous. Can cause skin irritation. Is highly inflammable. Dismantling 1. Dismantle the following parts: • Chain and bar. See the Operator Guide. •...

  • Page 43: Cylinder And Piston

    PISTON and CYLINDER Piston and Cylinder Dismantling 1. Dismantle the following parts: • Cylinder cover. • Spark plug. • Carburettor. See page 30. • Muffler. See page 17. 2. Unscrew the anti-vibration spring (B) from the cylinder. See fig. 1. 3.
  • Page 44 PISTON and CYLINDER 2. That the cylinder is free of score marks. 3. That the piston is free of score marks. Minor scratches can be polished off with fine emery paper. Max. 1 mm 4. That the piston ring is not burnt into its groove. 5.
  • Page 45 PISTON and CYLINDER Assembly Assembly of the piston and cylinder is carried out as follows: NOTE! Exercise care so that dirt and foreign particles do not get into the crankcase. 1. Lubricate the needle bearing and fit it in the connecting rod’s little-end.
  • Page 46 PISTON and CYLINDER Pressure testing The following parts must be removed to pressure test the crankcase and cylinder: • Carburettor. See page 32. • Muffler. See page 17. Carry out pressure testing as follows: 1. Remove the support ring in the intake manifold. Fit cover plate 502 54 05-01 with M4x15 mm bolt on the intake manifold.

  • Page 47: Crankcase And Crankshaft

    CRANKCASE and CRANKSHAFT This section deals with the following: • Crankcase and crankshaft (describes how the whole assembly is dismantled and reassembled) • Seals (describes only replacement of seals) • Bar bolts (describes only replacement of bar bolts) Crankcase and crankshaft Dismantling 1.
  • Page 48 CRANKCASE and CRANKSHAFT WARNING! The crankcase halves are hot and can cause burn injuries. Wear protective gloves. A Remove the oil filler cap. B Heat the relevant crankcase half to 200°C. C. Use protective gloves and press the bearing out from Fig.
  • Page 49 CRANKCASE and CRANKSHAFT Assembly Fit the crankcase and crankshaft as follows: WARNING! The crankcase halves are hot and can cause burn injuries. Wear protective gloves. 1. If bearings are to be fitted, do as follows: A Heat the relevant crankcase half to 200°C. B.
  • Page 50 CRANKCASE and CRANKSHAFT 4. Place the guide pegs in the clutch side’s crankcase half, and grease in and insert the gasket. See fig. 12. NOTE! Continuing to pull with the assembly tool after the gasket is clamped will damage the crankshaft.
  • Page 51 CRANKCASE and CRANKSHAFT Seals 1. To replace the seals on the crank shaft, remove the following parts first: On the flywheel side: • Starter. See page 19. • Flywheel. See page 21. • Generator, where appropriate. See page 22. On the clutch side: •...
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