Idle Speed Screw

If you require further assistance or are unsure about performing this procedure, contact an authorized service dealer.

REPLACE SPARK PLUG

Replace spark plug each year to ensure the engine starts easier and runs better. Set spark plug gap at 0.025 inch. Ignition timing is fixed, nonadjustable.

1.Twist, then pull off spark plug boot.

2.Remove spark plug from cylinder and dis- card.

3.Replace with Champion RCJ-6Y spark plug and tighten securely with a 3/4 inch socket wrench.

4.Reinstall the spark plug boot.

REPLACE FUEL FILTER

To replace fuel filter, drain unit by running it dry of fuel, then remove fuel cap/retainer assem- bly from tank. Pull filter from tank and remove it from the fuel line. Install new fuel filter on fuel line; reinstall parts.

Fuel Filter

Fuel Line

WARNING: Perform the following steps after each use:

S Allow engine to cool, and secure the unit before storing or transporting.

SStore unit and fuel in a well ventilated area where fuel vapors cannot reach sparks or open flames from water heaters, electric

motors or switches, furnaces, etc.

SStore unit with all guards in place. Position unit so that any sharp object cannot acci- dentally cause injury.

SStore unit and fuel well out of the reach of children.

SEASONAL STORAGE

Prepare unit for storage at end of season or if it will not be used for 30 days or more.

If your unit is to be stored for a period of time:

SClean the entire unit.

SStore in a clean dry area.

S Clean all parts and check for damage. Have damaged parts repaired or replaced by an authorized service dealer.

SKeep all nuts, bolts, and screws tight.

S Lightly oil external metal surfaces, includ- ing the blade.

To oil the blade, do the following:

SStop the engine and allow blade to come to

a complete stop.

SEnsure ON/OFF switch is in the OFF posi-

tion.

SDisconnect the spark plug wire.

SApply a light machine oil along the edge of the top strap as shown.

OIL

Top Strap

FUEL SYSTEM

Under FUELING ENGINE in the OPERA- TION section of this manual, see message la- beled IMPORTANT regarding the use of ga- sohol in your engine. Fuel stabilizer is an ac- ceptable alternative in minimizing the formation of fuel gum deposits during storage. Add stabi- lizer to gasoline in fuel tank or fuel storage con- tainer. Follow the mix instructions found on sta- bilizer container. Run engine at least 5 minutes after adding stabilizer.

ENGINE

SRemove spark plug and pour 1 teaspoon of 40:1, 2-cycle engine oil (air cooled) through

the spark plug opening. Slowly pull the starter rope 8 to 10 times to distribute oil.

SReplace spark plug with new one of recom- mended type and heat range (see RE- PLACE SPARK PLUG section).

SClean air filter.

S Check entire unit for loose screws, nuts, and bolts. Replace any damaged, broken, or worn parts.

S At the beginning of the next season, use only fresh fuel having the proper gasoline to oil ratio.

OTHER

SDo not store gasoline from one season to another.

S Replace your gasoline can if it starts to rust.

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Jonsered HT 2121 instruction manual Replace Spark Plug, Replace Fuel Filter, Seasonal Storage, Fuel System, Engine, Other
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HT 2121 specifications

The Jonsered HT 2121 is a high-performance hedge trimmer that is designed for both professional landscapers and home gardening enthusiasts. Known for its robustness and efficiency, the HT 2121 features a powerful 21cc, 2-cycle engine that delivers efficient cutting performance, allowing users to tackle dense hedges and shrubs with ease.

One of the standout characteristics of the Jonsered HT 2121 is its dual-action cutting blades. The blades are designed to ensure fast and clean cuts, minimizing the effort required by the user. With a blade length of 24 inches, the trimmer provides an impressive reach, making it ideal for handling tall hedges and large areas without the need for frequent repositioning.

The HT 2121 incorporates advanced technology to enhance user experience and reduce fatigue. It features an ergonomic design with a comfortable grip and a well-balanced structure, allowing operators to maneuver it effortlessly during extended use. The lightweight design is particularly beneficial for prolonged trimming sessions, as it reduces strain on the arms and shoulders.

Another important feature of the Jonsered HT 2121 is its easy starting system. The trimmer is equipped with an igniton and fuel system that ensures reliable starting every time. This is especially advantageous for users who may not have experience with two-cycle engines, as it handles starting challenges efficiently.

In terms of durability, the HT 2121 is built to withstand the rigors of outdoor use. The housing is made from high-quality materials that can resist wear and tear, while the cutting blades are designed to last, featuring a precision sharpening process that enhances their longevity.

Additionally, the hedge trimmer is designed with safety in mind. The blade guard and protective features ensure that users can operate the tool safely, reducing the risk of accidents. The HT 2121's low vibration technology also minimizes vibrations during operation, contributing to a more comfortable user experience.

Overall, the Jonsered HT 2121 is a reliable hedge trimmer that combines power, efficiency, and comfort. With its innovative features and user-friendly design, it stands out as a top choice for those looking to achieve a well-manicured garden with minimal effort. Whether it’s for professional landscaping or home gardening, the HT 2121 proves to be an indispensable tool for any gardener.
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