Jonsered CS 2153 manual Fuel Handling

Page 17

FUEL HANDLING

Fuel

Note! The machine is equipped with a two-stroke engine and must always be run using a mixture of gasoline and two- stroke oil. It is important to accurately measure the amount of oil to be mixed to ensure that the correct mixture is obtained. When mixing small amounts of fuel, even small inaccuracies can drastically affect the ratio of the mixture.

WARNING! Always ensure there is adequate

!ventilation when handling fuel.

Gasoline

Use good quality unleaded gasoline.

CAUTION! Engines equipped with catalytic converters must be run on unleaded fuel mixtures.

Leaded gasoline will destroy the catalytic converter and it will no longer serve its purpose. The green fuel cap on saws fitted with catalytic converters means that only unleaded gasoline can be used.

The lowest recommended octane grade is 87 ((RON+MON)/2). If you run the engine on a lower octane grade than 87 so-called knocking can occur. This gives rise to a high engine temperature and increased bearing load, which can result in serious engine damage.

When working with continuous high revs (e.g. limbing) a higher octane is recommended.

Environment fuel

JONSERED recommends the use of alkylate fuel or environment fuel for four-stroke engines blended with two- stroke oil as set out below. Note that carburetor adjustment may be necessary when changing the type of fuel (see instructions under the heading Carburetor).

Running-in

Avoid running at a too high speed for extended periods during the first 10 hours.

Two-stroke oil

For best results and performance use JONSERED two- stroke engine oil, which is specially formulated for our air- cooled two stroke-engines.

Never use two-stroke oil intended for water-cooled engines, sometimes referred to as outboard oil (rated TCW).

Never use oil intended for four-stroke engines.

Mixing ratio

1:50 (2%) for all engines.

Gasoline, litre

Two-stroke oil, litre

 

 

 

2% (1:50)

 

 

5

0,10

 

 

10

0,43/0,20

 

 

15

0,30

 

 

20

0,40

 

 

US gallon

US fl. oz.

 

 

1

2 1/2

 

 

2 1/2

6 1/2

 

 

5

12 7/8

 

 

Mixing

Always mix the gasoline and oil in a clean container intended for fuel.

Always start by filling half the amount of the gasoline to be used. Then add the entire amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of gasoline.

Mix (shake) the fuel mixture thoroughly before filling the machine’s fuel tank.

Do not mix more than one month’s supply of fuel at a time.

If the machine is not used for some time the fuel tank should be emptied and cleaned.

Chain oil

We recommend the use of special oil (chain oil) with good adhesion characteristics.

Never use waste oil. This results in damage to the oil pump, the bar and the chain.

It is important to use oil of the right grade (suitable viscosity range) to suit the air temperature.

In temperatures below 32°F (0°C) some oils become too viscous. This can overload the oil pump and result in damage to the oil pump components.

Contact your service agent when choosing chain oil.

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Contents Operator’s manual Symbols in the operator’s manual KEY to SymbolsSymbols on the machine Contents Dear customer IntroductionWhat is what on the chain saw? What is WHAT?Always use common sense General Safety PrecautionsBefore using a new chain saw Chain brake and front hand guard Machine′s safety equipmentPersonal protective equipment General Safety Precautions Chain catcher Throttle lockoutRight hand guard Vibration damping systemCutting equipment Stop switchMuffler General rulesCutting equipment designed to reduce kickback Sharpening your chain and adjusting depth gauge settingIf the depth gauge setting is too large General advice on adjusting depth gauge settingSharpening cutting teeth Instructions considerably increases the risk of kickbackTensioning the chain Adjustment of depth gauge settingLubricating cutting equipment Chain oilChecking chain lubrication Filling with chain oilChain drive sprocket Needle bearing lubricationBar Fitting the bar and chain AssemblyFuel Fuel HandlingFueling Fuel safetyTransport and storage Long-term storageStarting and stopping Starting and StoppingCold engine Warm engineStopping Working Techniques Basic safety rulesBefore use General working instructionsGeneral rules General Basic cutting techniqueTerms LimbingCutting Tree felling techniqueSafe distance Log is supported at one end. There is a high risk that itClearing the trunk and preparing your retreat Felling directionFelling Directional cutsFelling cut Freeing a tree that has fallen badly General adviceFreeing a trapped tree Cutting trees and branches that are in tensionCutting the trunk into logs How to avoid kickbackWhat is kickback? General MaintenanceCarburetor adjustment High speed jet H Correctly adjusted carburetorThrottle lockout Changing a broken or worn starter cord MufflerStarter Tensioning the recoil spring Air filterChanging a broken recoil spring Fitting the starterSpark plug Adjustment of the oil pumpLubricating the bar tip sprocket Needle bearing lubricationTemperature 0C 32F or colder Air Injection centrifugal cleaningWinter use Heated handlesDaily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataSaw chain filing and file gauges Bar and chain combinations050/1,3 mm 058/1,5 mmYour Warranty Rights and Obligations Federal Emission Control Warranty StatementSafety precautions for chain saw users American Standard Safety PrecautionsKickback safety precautions Other safety precautionsPage ´z+RI¶55¨ Page 1150419-95 ´z+RI¶55¨ ´z+RI¶55¨