Homelite UT70121A manual Troubleshooting, Speed. See Figure

Page 15

TROUBLESHOOTING

IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM, CONTACT YOUR AUTHORISED SERVICE DEALER.

PROBLEM

POSSIBLE CAUSE

SOLUTION

 

 

 

Engine will not start:

1. No spark.

2.No fuel.

3.Flooded engine.

4.Starter rope pulls harder now than when new.

1.Check spark. Remove sparking plug. Reattach the sparking plug cap and lay sparking plug on metal cylinder. Pull the starter rope and watch for spark at sparking plug tip. If there is no spark, repeat test with a new sparking plug.

2.Push primer bulb until bulb is full of fuel. If bulb does not fill, primary fuel delivery system is blocked. Contact a servicing dealer. If primer bulb fills, engine may be flooded (see next item).

3.Remove sparking plug, turn trimmer so sparking plug hole is aimed at the ground. Move choke lever to “RUN” and pull starter cord 10 to 15 times. This will clear excess fuel from engine. Clean and reinstall sparking plug. Pull starter three times with choke lever at “RUN”. If engine does not start, move choke lever to “CHOKE” and repeat normal starting procedure. If engine still fails to start, repeat procedure with a new sparking plug.

4.Contact a servicing dealer.

Engine starts but will not

Carburettor requires adjustment.

Contact a servicing dealer.

accelerate:

 

 

 

 

 

Engine starts but will only

Carburettor requires adjustment.

Turn mixture needle anticlockwise 1/16 turn. See

run at high speed at half

 

Figure 18.

choke:

 

 

Engine does not reach full

1.

Check oil fuel mixture.

speed and emits excessive

2.

Air filter dirty.

smoke:

 

 

 

3.

Carburettor requires adjustment.

1.Use fresh fuel and the correct 2-cycle oil mix.

2.Clean air filter. Refer to “Replacing and Cleaning Air Filter” earlier in this manual.

3.Turn mixture needle clockwise 1/16 turn. See Figure 18.

Engine starts, runs, and

Carburettor requires adjustment.

Turn idle speed screw clockwise to increase idle

accelerates but will not

 

speed. See Figure 18.

idle:

 

 

 

 

 

String will not advance:

1.

String welded to itself.

 

2.

Not enough string on spool.

 

3.

String worn too short.

 

4.

String tangled on spool.

 

5.

Engine speed too slow.

1.Lubricate with silicone spray.

2.Install more string. Refer to “String Replace- ment” earlier in this manual.

3.Pull strings while alternately pressing down on and releasing spool retainer.

4.Remove string from spool and rewind. Refer to “String Replacement” earlier in this manual.

5.Advance string at full throttle.

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Contents Save this Manual for Future Reference OPERATOR’S ManualSafety Table of ContentsSpecific Safety Rules for Trimmer USE Symbol Name Explanation SymbolsTechnical Data Packing List for OWNER’S KIT FeaturesUnpacking InstructionsWing NUT AssemblyAssembly Instructions Bolt Bracket Grass DeflectorSilencer Guard Assembly Operation Fuel and RefuellingOperating the Trimmer Grass Deflector Line Trimming CUT- OFF Blade Advancing String Using the EZ Line TAP Advance SystemAdvancing the String Cutting TipsTo Start a Warm Engine Ignition SwitchStarting and Stopping To Start a Cold EngineSee Figures 10 MaintenanceSpool Replacement EZ Line TAP Advance System NEW PRE-WOUND SpoolSpark Arrester Cleaning the Exhaust Port and SilencerStorage 1 Month or Longer Replacing and Cleaning AIR FilterFuel CAP Sparking PlugSpeed. See Figure TroubleshootingIdle Speed Screw Mixture Needle EC Declaration of Conformity WarrantySafety Directive Guarantee Statement Rtsa / Rtuk / RTGPage Page Ryobi Technologies GmbH

UT70121A specifications

The Homelite UT70121A is a versatile and efficient gas-powered string trimmer designed for both homeowners and professionals. Known for its robust performance and user-friendly features, this model stands out in the competitive market of outdoor power equipment.

One of the primary features of the UT70121A is its powerful 2-cycle, 25cc engine. This engine provides ample power for tackling tough weeds and thick grass, enabling users to complete their tasks quickly and efficiently. The lightweight design of the trimmer, weighing just under 10 pounds, ensures that users can maneuver easily, reducing fatigue during extended use.

The UT70121A is equipped with a 17-inch cutting width, allowing for a broad swath of vegetation to be cut in a single pass. This feature not only enhances productivity but also makes it easier to cover larger areas in less time. The trimmer uses a dual line feed system, which provides a clean cut and ensures that users can maintain their desired cutting height. The automatic line advance mechanism eliminates the hassle of stopping to adjust the line, making operation smoother and more efficient.

Another notable characteristic of the UT70121A is its easy-start technology. With the primer bulb and a reliable starting system, users can start the trimmer quickly, minimizing downtime. The anti-vibration handle further enhances user comfort, absorbing much of the vibration produced during operation. This makes it easier to control the trimmer and reduces strain on the hands and arms.

In terms of design, the UT70121A features an adjustable telescoping shaft that allows users to customize the length to suit their height and preference. This adaptability ensures confidence and comfort during operation. Additionally, the trimmer is designed for easy maintenance, with a tool-free access system for the air filter and spark plug, ensuring that routine servicing is an uncomplicated task.

The Homelite UT70121A is both powerful and practical, making it an excellent choice for those looking to keep their yards well-manicured. Its combination of a robust engine, user-friendly features, and thoughtful design ensures that each trimming session is efficient and effective, providing homeowners and landscapers with a reliable tool for maintaining their outdoor spaces. Whether tackling a small yard or larger landscaping jobs, the UT70121A meets a variety of gardening needs with ease.
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