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Jonsered CS 2145 - User Manual

Jonsered CS 2145
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Oper
ator
s manual
Please read the oper
ator’s manual carefully and
make sure you understand the instructions
before using the machine.

Other manuals for Jonsered CS 2145

Questions and Answers

  • M
    Mary TaylorJul 26, 2025
    What to do if Jonsered CS 2145 Chainsaw engine stalls when throttle released?
    • M
      Martin McphersonJul 27, 2025
      If your Jonsered Chainsaw engine stalls when the throttle is released, try the following: Adjust the L screw, adjust the H screw. Also, check for a faulty pump diaphragm, a needle valve set too high, a sticking needle valve assembly, or faulty diffuser jets.
  • A
    Amy YatesJul 31, 2025
    Why Jonsered CS 2145 Chainsaw has low power?
    • A
      April ShepherdJul 31, 2025
      If your Jonsered Chainsaw is experiencing low power, consider these potential solutions: Adjust the H screw, check for a blocked fuel tank vent or fuel filter. Inspect the impulse channel for leaks or blockages. Ensure the cover on the carburettor pump side is secure, and examine the pump diaphragm for faults. Also, check the air filter for blockages, the needle valve assembly for sticking, and the metering system for leaks or incorrect assembly. Look for loose diaphragm rivets or holes in the diaphragm, and check for a leaking control diaphragm or cover plate.
  • H
    howard78Aug 5, 2025
    What to do if Jonsered CS 2145 will not idle?
    • S
      Shirley BishopAug 5, 2025
      If your Jonsered Chainsaw will not idle, try these solutions: Adjust the L screw. Check for a leaking air intake hose or loose carburettor mounting bolts. Inspect the fuel hose for looseness or faults and ensure the fuel filter isn't blocked and the fuel line isn't blocked. Also, ensure the fuel tank vent is not blocked. Check the throttle valve pivot, pushrod, and return spring for stiffness, sticking, or defects. Look for a bent throttle stop and a faulty diffuser jet.
  • J
    Jacqueline KnightAug 10, 2025
    Why Jonsered CS 2145 idling uneven?
    • J
      jameslewisAug 10, 2025
      If your Jonsered Chainsaw is idling unevenly, consider the following solutions: Check for a blocked fuel filter or fuel line, a leaking air intake hose, or loose carburettor mounting bolts. Inspect the throttle valve pivot, screw, and valve for wear or looseness. Also, check for a sticking needle valve assembly, leaks in the metering system, a worn metering system centre knob, or a hole in the diaphragm. Finally, look for a leaking control diaphragm/cover plate or a crankcase leak.
  • A
    Anna GrayAug 15, 2025
    Why Jonsered CS 2145 idling too rich?
    • B
      Bob SandovalAug 15, 2025
      If your Jonsered Chainsaw is idling too rich, consider these potential solutions: Adjust the L screw, check for a worn needle valve or one that is set too high. Also, inspect for a worn needle valve lever, a leaking control diaphragm/cover plate, or a needle valve assembly that is sticking.
  • S
    susancarterAug 20, 2025
    Why Jonsered CS 2145 Chainsaw will not "four-stroke"?
    • S
      Stacey CrawfordAug 21, 2025
      If your Jonsered Chainsaw will not "four-stroke", consider the following: Check for a blocked fuel tank vent or fuel filter, or a blocked fuel line. Inspect for a loose or damaged fuel hose, a leaking or blocked impulse channel, or a loose cover on the carburettor pump side. Check for a faulty pump diaphragm, a leaking air intake hose, or loose carburettor mounting bolts. Also, check if the needle valve is set too low, or if there's a leak in the metering system, or if the metering unit is incorrectly assembled. Finally, inspect for a loose diaphragm rivet, a hole in the diaphragm, or a leaking control diaphragm/cover plate.

Summary

KEY TO SYMBOLS

Symbols on the Machine

Visual indicators and warnings found directly on the chainsaw.

Symbols in the Operators Manual

Graphical representations of instructions and safety advice within the manual.

INTRODUCTION

WHAT IS WHAT?

What is What on the Chain Saw?

Identification of the main parts and components of the chainsaw.

GENERAL SAFETY PRECAUTIONS

Before Use and General Advice

Essential precautions and common sense advice before operating the chainsaw.

Personal Protective Equipment (PPE)

Details on required safety gear for chainsaw operation.

Machine Safety Features

Explanation and checks for the chainsaw's built-in safety mechanisms.

Cutting Equipment and Maintenance Safety

Safety aspects related to cutting tools, bar, chain, and their upkeep.

ASSEMBLY

Fitting the Bar and Chain

Step-by-step guide for attaching the guide bar and saw chain.

FUEL HANDLING

Fuel Types and Mixing

Information on petrol types, two-stroke oil, and correct fuel mixture ratios.

Chain Oil and Fuelling

Guidance on chain oil selection, filling, and safe refuelling procedures.

STARTING AND STOPPING

Starting Procedures

Detailed steps for starting the chainsaw engine, cold and warm.

Stopping the Engine

Instructions on how to safely turn off the chainsaw engine.

WORKING TECHNIQUES

Before Use Checks and General Instructions

Pre-operation checks and fundamental working practices.

Safe Working Positions and Techniques

Guidance on stance, grip, and body positioning for safe operation.

Cutting Techniques

Methods for limbing, log cutting, and felling trees safely.

Avoiding Kickback

Understanding and preventing dangerous kickback reactions.

MAINTENANCE

Carburettor Adjustment and Tuning

Procedures for adjusting the carburettor for optimal engine performance.

Safety Equipment Checks

Inspection and maintenance of critical safety components like the chain brake.

Component Maintenance

Upkeep for starter, air filter, spark plug, and cooling systems.

Maintenance Schedule

TECHNICAL DATA

Specifications Overview

Engine, ignition, fuel, and weight specifications for different models.

Bar and Chain Details

Information on bar/chain combinations, pitch, gauge, and filing.

EC-Declaration of Conformity

Compliance statement regarding European directives for machinery and emissions.

Jonsered CS 2145 Specifications

General IconGeneral
Engine Power2.1 kW
Weight4.9 kg
Oil Tank Volume0.26 liters
Bar Length13-18 inches
Chain Pitch0.325 inches
Chain Gauge0.05 inches
Cylinder Displacement45 cm³

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