Homelite UT70121A manual Cleaning the Exhaust Port and Silencer, Spark Arrester

Page 13

MAINTENANCE

STRING REPLACEMENT

See Figures 12, 13, 14 and 15.

1 Stop the engine and disconnect the sparking plug

wire. Hold the string head and unscrew the spool

SPRING

SPOOL

 

retainer. Turn anticlockwise.

2

Remove the spool from the string head. NOTE:

 

Keep the spring attached to the spool. Remove any

 

old string remaining on the spool.

3

Cut two pieces of string, each being approximately

 

2.7 m (9 ft) long.

4

Insert the first string into the anchor hole in the

 

upper part of the spool. Wind the first string round

 

the upper part of the spool anticlockwise, as shown

 

by the arrows on the spool. Place string in the slot

 

on upper spool flange, leaving about 152 mm (6 in)

 

extended beyond the slot. Do not overfill. After

 

winding the string, there should be at least 6 mm

 

(1/4 in) between the wound string and the outside

 

edge of the spool.

5

Repeat above step with second string, using the

 

bottom part of spool. Do not overfill.

6

Replace the spool and the spool retainer. Refer to

 

“Spool Replacement“ earlier in this manual.

CLEANING THE EXHAUST PORT AND SILENCER

Depending on the type of fuel used, the type and amount of oil used, and/or your operating conditions, the exhaust port and silencer may become blocked with carbon deposits. If you notice a power loss with your petrol-powered tool, a qualified service technician will need to remove these deposits to restore perfor- mance.

SPARK ARRESTER

The spark arrester must be cleaned or replaced every 25 hours or yearly to ensure proper performance of your product. Spark arresters may be in different locations depending on the model purchased. Please contact your nearest service dealer for the location of the spark arrester for your model.

Cleaning Instructions:

■Remove the spark arrester from the silencer.

■If your spark arrester is made of fibreglass, discard and replace.

■If your spark arrester is made of metal, follow these cleaning instructions:

1.Spray the spark arrester with a quality carbon cleaner.

2.Gently clean using a wire brush.

3.Install the new or cleaned spark arrester and reassemble completely before use.

ARROWS ON

SPOOL

ANCHOR

HOLE

FIRST STRING

Fig. 12

FIRST STRING

SLOT

Fig. 13

SECOND

STRING

Fig. 14

SLOT

ARROWS ON

 

SPOOL

Fig. 15

13

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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 Unpacking FeaturesInstructions Packing List for OWNER’S KITAssembly Instructions AssemblyBolt Bracket Grass Deflector Wing NUTSilencer Guard Assembly Fuel and Refuelling OperationOperating the Trimmer Advancing the String Advancing String Using the EZ Line TAP Advance SystemCutting Tips Grass Deflector Line Trimming CUT- OFF BladeStarting and Stopping Ignition SwitchTo Start a Cold Engine To Start a Warm EngineSpool Replacement EZ Line TAP Advance System MaintenanceNEW PRE-WOUND Spool See Figures 10Spark Arrester Cleaning the Exhaust Port and SilencerFuel CAP Replacing and Cleaning AIR FilterSparking Plug Storage 1 Month or LongerSpeed. See Figure TroubleshootingIdle Speed Screw Mixture Needle Safety Directive WarrantyGuarantee Statement Rtsa / Rtuk / RTG EC Declaration of ConformityPage 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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