Jonsered CS 2138 instruction manual Operating Your Unit, Adjusting the tension, Fueling Engine

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7.Place chain over and behind clutch, fitting the drive links in the clutch drum sprocket.

8.Fit bottom of drive links between the teeth in the sprocket in the nose of the guide bar.

9.Fit chain drive links into bar groove.

10.Pull guide bar forward until chain is snug in guide bar groove. Ensure all drive links are in the bar groove.

11.Now, install chain brake making sure the adjusting pin is positioned in the lower hole in the guide bar. Remember this pin moves the bar forward and backward as the screw is turned.

12.Install chain brake nuts and finger tighten only. Once the chain is tensioned, you will need to tighten chain brake nuts.

CHAIN TENSION (Including units with chain already installed)

NOTE: When adjusting chain tension, make sure the chain brake nuts are finger tight only. Attempting to tension the chain when the chain brake nuts are tight can cause damage.

Checking the tension:

Use the screwdriver end of the chain adjust- ment tool (bar tool) to move the chain around the bar. If the chain does not rotate, it is too tight. If too loose, the chain will sag below the bar.

Chain Brake Nuts

Chain Adjustment

Tool (Bar Tool)

Adjusting the tension:

Chain tension is very important. Chain stretches during use. This is especially true during the first few times you use your saw.

Always check chain tension each time you use and refuel your saw. You can adjust the chain tension by loosening the chain brake nuts and turning the adjusting screw 1/4 of a turn while lifting up on the bar.

SIf chain is too tight, turn adjusting screw 1/4 turn counterclockwise.

SIf chain is too loose, turn adjusting screw 1/4 turn clockwise.

Adjusting

Screw

Chain Brake Nuts

Guide Bar

Adjusting Screw -- 1/4 Turn

SLift up the tip of the bar and securely tight- en the chain brake nuts with the bar tool.

SRecheck chain tension.

Chain Brake

Nuts

WARNING: If the saw is operated with a loose chain, the chain could jump off the guide bar and result in serious injury.

WARNING: Muffler is very hot during and after use. Do not touch the muffler or al- low combustible material such as dry grass or fuel to do so.

OPERATING YOUR UNIT

BEFORE STARTING ENGINE

WARNING: Be sure to read the fuel information in the safety rules before you be- gin. If you do not understand the safety rules, do not attempt to fuel your unit. Contact an authorized service dealer.

BAR AND CHAIN LUBRICATION

The bar and chain require continuous lubri- cation. Lubrication is provided by the auto- matic oiler system when the oil tank is kept filled. Lack of oil will quickly ruin the bar and chain. Too little oil will cause overheating shown by smoke coming from the chain and/ or discoloration of the bar.

Only use Bar and Chain Oil for bar and chain lubrication.

Oil Cap

Fuel mix cap

FUELING ENGINE

WARNING: Remove fuel cap slowly when refueling.

This engine is certified to operate on unleaded gasoline. Before operation, gasoline must be mixed with a good quality 2-cycle air-cooled engine oil designed to be mixed at a ratio of 40:1. A 40:1 ratio is obtained by mixing 0,125 liter of oil with 5 liters of unleaded gasoline. DO NOT USE automotive or boat oil. These oils will cause engine damage. When mixing fuel follow the instructions printed on the container. Always read and follow the safety rules relating to fuel before fueling your unit.

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Contents Español EnglishFrançais DeutschIdentification of Symbols Identification What is WHAT?ON/STOP Maintain Your SAW in Good Working Order Safety RulesPlan Ahead Operate Your SAW SafelyAvoid Pinch-Kickback KickbackReduce the Chance of Kickback Maintain ControlChain Brake Kickback Safety FeaturesElbow locked Thumb on underside of handlebar Attaching the BAR & Chain If AssemblySafety Notice Exposure to Attaching the Bumper SpikeFueling Engine Adjusting the tensionOperating Your Unit Before Starting Engine BAR and Chain LubricationDifficult Starting or starting a flooded engine Chain BrakeImportant Points to Remember Starting a Warm EngineFelling Large Trees Cutting MethodsImportant Points Tree Felling TechniquesTypes of Cutting Used for Bucking Notch CUT and Felling the TreeCutting a Fallen Tree Important pointsPruning Bucking Using a LOG or SUP- Port StandLimbing and Pruning Important Points LimbingAIR Filter Service and AdjustmentsCleaning the air filter BAR MaintenanceIdle Speed--T Carburetor AdjustmentsTroubleshooting Table Cause Remedy Chain SharpeningDeclaration of Conformity Texarkana Michael S. Bounds, Director Safety and StandardsEC Declaration of Conformity relating to 2000/14/EC Technical Data Sheet

CS 2138 specifications

The Jonsered CS 2138 is a powerful and versatile chainsaw designed for both professional loggers and avid DIY enthusiasts. Renowned for its reliability and performance, the CS 2138 is particularly suited for medium to heavy-duty tasks, making it an excellent choice for cutting firewood, felling trees, and other demanding applications.

One of the standout features of the Jonsered CS 2138 is its robust engine. It is equipped with a high-performance 38cc engine that delivers an impressive power-to-weight ratio, allowing for efficient cutting while minimizing user fatigue. The engine utilizes advanced technology that ensures low emissions and complies with environmental regulations, making it a responsible choice for eco-conscious users.

The chainsaw features an ergonomic design, which includes a comfortable handle and an anti-vibration system. This system reduces the vibrations transmitted to the user’s hands, enhancing comfort during prolonged use and reducing the risk of white finger syndrome, a common issue for chainsaw operators. The lightweight construction of the CS 2138 further contributes to its ease of handling, allowing users to maneuver the saw with precision.

Another significant technological advancement in the Jonsered CS 2138 is its Easy Start system. This feature simplifies the starting process, requiring less effort from the user to get the chainsaw up and running. The chainsaw also comes with a side-mounted chain tensioner that makes adjusting the chain quick and convenient, ensuring optimal performance during cutting tasks.

Safety is a top priority for Jonsered, and the CS 2138 incorporates several safety features. It is equipped with a chain brake that engages automatically in the event of kickback, significantly reducing the risk of accidents. Additionally, the saw has a low-profile chain and bar design that enhances overall safety without compromising cutting efficiency.

In terms of maintenance, the CS 2138 offers a tool-less air filter cover, making it easy for users to access the air filter for cleaning or replacing. This feature extends the life of the chainsaw and ensures consistent performance by maintaining optimal airflow.

In summary, the Jonsered CS 2138 is a powerful, efficient, and user-friendly chainsaw that combines advanced technology with safety and comfort. Its features make it an excellent choice for anyone looking to tackle heavy cutting tasks without sacrificing performance or usability. Whether you're a professional logger or a regular homeowner, the CS 2138 is designed to meet your chainsawing needs with ease and reliability.
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