Stihl 021 Operator Manual


Stihl 021 operator manual and user instructions. PDF view online or download and print the 021 chainsaw instructions. Clear, concise and easy to understand.

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Stihl 021 Operator Manual

Stihl 021 operator manual for the 021 chainsaw. PDF download operator instructions on how to use and maintain the Stihl 021 (21 series) chainsaw. Clear and concise with easy to understand diagrams detailing the safety, operating, maintaining and storing of the chainsaw.

Stihl 021 Chainsaw Operator Manual Contents

Safety, cutting attachment, bar and chain, fuel, oil, chain brake, stopping/starting engine, adjusting carburetor, air filter, engine management, spark plug, chain sprocket, sharpening the chain, maintenance and care, specifications.


This is The Stihl 021 User Guide, owner manual.

More information for the service and repair of the Stihl 021 chainsaw can be found in the service workshop manual, parts list and any technical notes available for PDF download or online viewing on this website. Also check out any questions and answers, articles or the full specifications pages for the 021 chainsaw.

Adjusting Stihl 021 Carburetor

Stihl 021 chainsaw carburetor guide- The carburetor has been factory adjusted to provide the optimal engine air/fuel flow. Instructions for standard settings to adjust the idling screw, turning either clockwise or counter clockwise. Learn how to set the idling screw correctly if the engine is cutting out or idling incorrectly. Learn how to check the spark plug for a good electrical spark, cleaning or replacing if required. Air filter cleaning and replacement is described in the operator manual. A carburetor PDF manual is available from this website.

Stihl 021 Chainsaw Specifications

First year of production: 1993

Displacement: 35.2 cc (2.15 cu. in.)

Fuel mix: 50:1 with Stihl 2 cycle oil

Standard Cylinder Diameter: 40 mm (1.42 in.)

Piston stroke: 28 mm (1.1 in.)

Cylinder construction: chrome-plated aluminum

Crankcase construction: cast magnesium

Walbro Carburetor:  WT-215 , WT-286A , WT-503A

Zama Carburetor:  C1Q-S11G

Spark Plugs: Bosch WSR6F Spark Plug, Champion RCJ6Y Spark Plug, NGK BPMR7A Spark Plug.

Fuel Mix Ratio: 50:1 with STIHL two-stroke engine oil, 25:1 with other brand name two-stroke, air-cooled engine oils

Stihl 021 Operator Manual PDF

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