Jonsered CS 2141 Workshop Manual
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Jonsered CS 2141 Workshop Manual

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Workshop manual
108 88 74-26

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Summary of Contents for Jonsered CS 2141

  • Page 1 Workshop manual 108 88 74-26...
  • Page 2 – English...

  • Page 3: Table Of Contents

    Workshop manual Jonsered CS 2141 / CS 2145 / CS 2147/C/W/H / CS 2149/C/W/H / CS 2150 / CS 2152/C/W/H / CS 2156/C/W/H / CS 2159/C/W/H Contents Introduction ............2 Safety regulations ..........3 General instructions ........... 3 Special instructions ..........3 Special tools ............

  • Page 4: Introduction

    Cleaning and inspection Refi tting/Reassembly This workshop manual covers the following chainsaw models: Dismantling and reassembling the entire chain- CS 2141 CS 2145 CS 2147 If the entire chainsaw is to be dismantled, follow CS 2147 C the instructions under the heading “Removal/Dis- CS 2147 WH mantling”.

  • Page 5: Safety Regulations

    Jonsered, could mean that the saw no longer meets these safety requirements and Poor chain lubrication can result in failure of the the person who carried out the work may be held chain, which could cause serious or fatal injury.

  • Page 6: Special Tools

    Special tools – English...
  • Page 7 Special tools 21 b 21 c Item Description Used for Order no. Clutch tool Centrifugal clutch 502 54 16-02 Piston stop Locking crankshaft 502 54 15-01 Stop plate Locating intake gaiter 502 54 17-01 21 a Fuel fi lter hook Withdrawing the fuel fi...

  • Page 8: Technical Data

    CS 2149/W: 0,5 / 0,02" SEM CD 0,3 / 0,012" ZAMA C3-EL17 (EPA) ZAMA C3-EL18 CS 2141/CS 2145/ CS 2150: 0,5 / 0,02" SEM CD 0,3 / 0,012" Walbro HDA 195 (EPA) ZAMA C3-EL18 CS 2147/C/W/H: 0,5 / 0,02"...
  • Page 9 Spark plug CS 2149/W: 2 700 3 800 13 000 NGK BPMR 7A, Champion RCJ 7Y CS 2141/CS 2145/ CS 2150: 2 700 3 800 12 500 / 12 500 / NGK BPMR 7A, Champion RCJ 7Y 13 000 CS 2147/C/W/H:...

  • Page 10: Construction And Function

    Construction and function Carburettor The carburettor works in different ways depending on the setting: The carburettor consists of three sub-systems: • Cold start mode • Idling mode • Part throttle mode • Full throttle mode • The metering unit (A) which contains the jets and the fuel control mechanism.
  • Page 11 Construction and function In part throttle mode the throttle valve (F) is par- tially open. Fuel is supplied through the diffuser jets (E). In full throttle mode both valves are open and fuel is supplied through all the diffuser jets (E). English –...

  • Page 12: Troubleshooting

    Troubleshooting The various faults that can affect a chainsaw are divided into four groups. In each group the likely symp- toms are given on the left and possible causes are listed on the right. The most likely faults are given fi rst, and so on.
  • Page 13 Troubleshooting Acceleration and retardation High rpm Will not run at Adjust H screw Does not Adjust L screw full throttle Blocked air fi lter accelerate Adjust H screw Blocked fuel tank vent Blocked air fi lter Blocked fuel fi lter Blocked fuel tank vent Fuel line blocked Blocked fuel fi...

  • Page 14: Chain Brake

    Repair instructions Chain brake – dismantling WARNING! Make sure the spring does not fl y out and cause injury. Wear eye protection. Disengage the brake by pushing the kickback Remove the screws and carefully remove the cover guard backwards. Unscrew the guide bar bolts and from the chain brake spring.
  • Page 15 Repair instructions Chain brake – reassembly Bolt the elbow joint to the brake band and tighten Tension the brake spring by using the kickback to a torque of 1–1.5 Nm. guard from the saw as a tool. Engage it with the Locate the elbow joint and connected brake band brake mechanism and turn clockwise to release in their recesses in the clutch cover.

  • Page 16: Silencer

    A worn (damaged) chain catcher on CS 2141, CS 2145 or CS 2150 can be replaced with the same chain catcher as CS 2149, (see fi gure above).

  • Page 17: Stop Switch

    Repair instructions Stop switch – removal Cleaning and inspection Clean and inspect all parts carefully. If there are Remove the cylinder cover and air fi lter. any cracks or other defects replace the damaged parts with new ones. Always use original parts. Stop switch –...

  • Page 18: Choke Control

    Repair instructions Stop switch – refi tting Choke control – removal Remove the cylinder cover, air fi lter and stop switch. Disconnect the fuel hose from the carburet- tor. NOTE! Do not use knurled pliers to disconnect or reconnect the fuel hose. This could damage the hose and lead to leakage or fracture.

  • Page 19: Throttle Trigger

    Repair instructions Choke control – refi tting Cleaning and inspection First reattach the choke control to the air fi lter, then • Clean and inspect all parts carefully. If there are press it onto the carburettor so that the clips engage. any cracks or other defects replace the damaged parts with new ones.

  • Page 20: Hand Grip Heater

    Repair instructions Hand grip heater on model CS 2147 W, Reconnect the lead and refi t the hand grip cover CS 2149 W, CS 2152 W, CS 2156 W, and cylinder cover. CS 2159 W – removal • Switch – troubleshooting No heating or heating only in front hand grip •...
  • Page 21 Repair instructions Rear handle heater Measure the resistance between F and Z. It should be 1 ± 0.5 ohm. If not, replace the rear handle heater. Generator Measure the resistance between G and H. It should be between 0.3–1.3 ohm. If not, replace the generator.
  • Page 22 Repair instructions Heater element and rear hand grip Hand grip heater on model CS 2147 W, – removal CS 2149 W, CS 2152 W, CS 2156 W, CS 2159 W – refi tting Remove the cylinder cover, hand grip cover, hand grip and right-hand stop.

  • Page 23: Starter Assembly

    Remove the bolt from the centre of the pulley and lift off the pulley. Models CS 2141, CS 2145, CS 2147, CS 2149, CS 2150, CS 2152 Pull out about 30 cm of the cord and fasten it in the notch in the pulley rim.
  • Page 24 Remove the broken recoil spring. For model 2159: remove the recoil spring cassette. Cleaning and inspection: Models CS 2141, CS 2145, CS 2147, CS 2149, • Clean and inspect all parts carefully. If there are CS 2150, CS 2152 any cracks or other defects replace the dam- aged parts with new ones.

  • Page 25: Ignition Module - Testing

    Repair instructions Starter assembly – refi tting Ignition module/fl ywheel – removal Remove the cylinder cover. Disconnect the HT lead, remove the spark plug and fi t piston stop 502 54 15-01 in its place. Take off the starter assembly, re- lease the leads from the cable guide and remove it.
  • Page 26 Repair instructions Replacing the generator, model CS 2147 W, CS 2149 W, CS 2152 W, CS 2156 W, CS 2159 W Remove the cylinder cover. Disconnect the HT lead, remove the spark plug and fi t piston stop 502 54 15-01 in its place.

  • Page 27: Ignition Module And Fl Ywheel

    Repair instructions Ignition module and fl ywheel – refi tting Remove the fuel hose and throttle pushrod from the carburettor. Unbolt the rear tank mounting from the crankcase, i.e. the rear vibration damping spring, and both stops. Lower the tank as far as it will go to allow access to the heater lead where it is connected to the tank.

  • Page 28: Centrifugal Clutch

    • HT lead and fi t piston stop 502 54 15-01 in its place. • starter assembly, tighten to a torque of 2.5–3.5 Models CS 2141, CS 2145, CS 2147, CS 2149, • cylinder cover CS 2150, CS 2152 Unbolt the clutch using tool 502 54 16-02 and a suitable socket or combination spanner.
  • Page 29 Repair instructions Model CS 2156, CS 2159 Models CS 2141, CS 2145, CS 2147, CS 2149, Min 65 mm CS 2150, CS 2152 NOTE! Handle the clutch springs carefully. If they are opened up too much they could dam- age the saw.

  • Page 30: Oil Pump

    Repair instructions Oil pump – removal CS 2147, CS 2149, Models CS 2141, CS 2145, CS 2147, CS 2149, CS 2150, CS 2152, CS 2156, CS 2159 CS 2150, CS 2152 Empty and clean the oil tank. Fit the clutch onto the crankshaft and tighten Remove the cylinder cover.
  • Page 31 Model CS 2150: Push the housing up a little from the fuel tank and remove the fi lter (A) from underneath, see the diagram under “Oil pump – removal CS 2141, CS 2145”. Remove the pin (B) from the adjuster screw, using a small drift to press it out.
  • Page 32 Repair instructions Oil pump –refi tting CS 2147, CS 2149, CS 2150, CS 2152, CS 2156, CS 2159 Push the crankcase up a little from the fuel tank and remove the fi lter (A) from underneath. Lubricate the pump piston (C) with chain oil and fi t the pump piston and washers.
  • Page 33 Fit the bolts on the anti-vibration elements on the same side. Oil pump –refi tting CS 2141, CS 2145 Models CS 2141, CS 2145, CS 2147, CS 2149, CS 2150, CS 2152 Lubricate the piston pump (C) with chain oil and fi t the pump piston.
  • Page 34 Repair instructions Carburettor – removal Fit the chain guide plate (one bolt), tightening torque 2-3 Nm. NOTE! Check that the chain tensioner is in posi- tion. Fit the bolts on the anti-vibration elements. Note. Models CS 2145 and CS 2150 have another type of chain tensioner, which is adjusted from the side.

  • Page 35: Carburettor

    Repair instructions Remove the rubber inlet manifold using a large screwdriver. When replacing the thermostat: Disconnect the cable from X and V. Trouble shooting, see page On saws with carburettor CS 2147 H, CS 2149 H, CS 2152 H, CS 2156 H, CS 2159 H Replacing the heating element: Lower the rear section of the tank by removing the bolt between Undo and remove the carburettor bolts.
  • Page 36 Repair instructions Carburettor – dismantling Cleaning and inspection Clean all the carburettor components in petrol. Use an airline to dry off the petrol from all components. Blow through all the channels in the carburettor body and check that they are not blocked. Check that: •...

  • Page 37: Carburettor - Pressure Testing

    Repair instructions Carburettor – pressure testing If the throttle and choke butterfl ies and their Pressure testing should be carried out with the car- spindles were removed, these must be refi tted. burettor fully assembled. Testing should always be Lubricate the spindle bearings with light oil. carried out after the carburettor has been repaired, but can also be performed for troubleshooting before dismantling.
  • Page 38 Repair instructions Carburettor – refi tting NOTE! Cleanliness is very important when reas- sembling the carburettor. Tiny particles of dirt can cause operating problems. Fit the carburettor. Screw in the carburettor bolts directly from behind, without lifting the carburet- tor assembly. Tighten to a torque of 1–1.5 Nm. It is important to hold the carburettor fl...

  • Page 39: Carburettor Heater

    Repair instructions Carburettor heater CS 2147 H, CS 2149 H, CS 2152 H, CS 2156 H, CS 2159 H – Refi tting Heating element Connect the leads to the stop switch. Carburettor heater CS 2147 H, CS 2149 H, CS 2152 H, CS 2156 H, CS 2159 H –Removing Remove: •...
  • Page 40 Unbolt the vibration damping spring between the cylinder and hand grip. On models CS 2141 and CS 2145 there are cylin- der bolts on the underside. – English...

  • Page 41: Air Intake System

    Repair instructions Air intake system – refi tting Fit the inlet manifold (A) through the insulating plate in the carburettor fl ange cut-out (B), and check that the insulating plate’s impulse tube sits correctly in the inlet manifold. Fit the perforated brass support ring in the inlet manifold.

  • Page 42: Carburettor - Adjustment

    • cylinder, see special instructions clutch may fl y off and cause injury. • silencer support (does not apply to CS 2141, CS 2145, CS 2150) Basic settings and running in • air fi lter During testing at the factory the carburettor is ad- •...
  • Page 43 The recommended engine speeds are as follows: H=1. Model Max revs Idle revs • Then screw out the H screw 1/4 turn. H=1 1/4. CS 2141 12,500 rpm 2,700 rpm • Run the saw again at full throttle for about 10 CS 2145 12,500 rpm...

  • Page 44: Fuel Tank

    Repair instructions Fuel tank – removal WARNING! The fuel used in chainsaws is harmful if inhaled, may cause skin irritation and is highly fl am- mable. Empty the fuel tank. Remove the following: • cylinder cover • air fi lter •...

  • Page 45: Fuel Fi Lter

    Repair instructions Cleaning and inspection Tank vent – testing Carefully check that: • there are no leaks from the fuel tank • there are no leaks from the tank fi ller cap • the fuel hose is undamaged and free from wear •...

  • Page 46: Piston And Cylinder

    • carburettor (see “Carburettor – removal”) • silencer • spark plug • fuel tank (applies to CS 2141, CS 2145) Fit the throttle pushrod in the tank and connect it to the carburettor. Refi t the spring. Unbolt the vibration damping spring from the hand Connect the fuel hose to the carburettor.
  • Page 47 Repair instructions Cover the opening in the crankcase. When replacing the cylinder CS 2141, CS 2145: Unscrew the decompression valve. (CS 2145) Remove the intake system, see “Air intake system – removal”. Model CS 2150 is fi tted with a spacer, which is Remove the circlips from the ends of the gudgeon secured using four bolts from the underside.

  • Page 48: Decompression Valve - Pressure Testing

    Lubricate the little end bearing with two-stroke oil • Pressure test the decompression valve. and insert it in the connecting rod. • Also refer to Jonsered’s Analysis guide for piston failures, art. no. 108 07 01-01. Decompression valve – pressure...
  • Page 49 Repair instructions Fit the inlet manifold 503 86 63-01 to the cylinder. Check that the impulse tube is correctly seated in the impulse channel. NOTE! It is very important that there are no leaks in the inlet system, otherwise the engine Fit a new cylinder base gasket.

  • Page 50: Cylinder - Pressure Testing

    Repair instructions Piston and cylinder – refi tting CS 2141, Cylinder – pressure testing CS 2145, CS 2152, CS 2159 See Piston and cylinder CS 2147, CS 2149, CS 2150, CS 2152, CS 2156, CS 2159 – Refi tting points 1-5.

  • Page 51: Crankcase And Crankshaft

    Repair instructions Crankcase and crankshaft – dismantling CS 2147, CS 2149, CS 2152, CS 2156, CS 2159 Remove the following: • guide bar and chain • clutch cover • cylinder cover • starter assembly* • ignition system* • generator* • centrifugal clutch* •...

  • Page 52: Crankshaft Bearings

    Repair instructions Crankshaft complete - dismantling Crankshaft bearings – replacement CS 2141, CS 2145, CS 2150 CS 2147, CS 2149, CS 2152 If the crankshaft bearings are to be replaced, tap them out gently using drift 502 50 30-18. Remove the following: •...
  • Page 53 Repair instructions Crankshaft bearings – replacement Crankshaft bearings CS 2141, CS 2145, CS 2156, CS 2159 CS 2150 – replacement If the crankshaft bearings are to be replaced they Remove: must be pulled off the crankshaft using puller 504 • The crankshaft complete from the crankcase, 90 90-02.
  • Page 54 Repair instructions • fuel tank* • piston and cylinder* • generator* • carburettor base • carburettor* • throttle pushrod • silencer* • ignition system* Check that the guide pins are in place. Fit a new • starter assembly* gasket to the mating surface of the clutch side of the crankcase.
  • Page 55 3-4 hours with the carburettor adjusted to the factory set- tings. Crankshaft complete CS 2141, CS 2145, CS 2150 – reassembly Place the fl ywheel side of the crankcase over the crankshaft and pull the two crankcase halves to- gether using assembly tools 502 50 30-16.

  • Page 56: Repairing Damaged Threads

    Repair instructions Repairing damaged threads Guide bar bolts – replacement A repair kit, 503 27 33-01, is available for repairing damaged threads. Drain the oil tank. First drill out the hole using: 6.1 mm drill bit for magnesium crankcase Knock through the old guide bar bolt so that it falls into the oil tank.

  • Page 57: Appendix A, Carburettor - Epa Models

    January 2002 6. Adjust the H-needle to a top speed of ”C” rpm. After replacing the carburetor or high speed and/or Model CS 2141/CS 2145/CS 2150 C = 13 700 low speed needle on an EPA (The US Environmental Model CS 2149/CS 2152 C = 13 700 Protection Agency) certifi...
  • Page 58 – English...
  • Page 59 English –...

This manual is also suitable for:

Cs 2147Cs 2149Cs 2150Cs 2152Cs 2156Cs 2147 c ... Show all

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