Homelite UT74121A Mounting the SAFE-T-TIP Nose Guard, Cleaning the AIR Filter, Tighten 3/4 Turn

Page 33

MAINTENANCE

TIGHTEN 3/4

A TURN

Fig. 70

MOUNTING THE SAFE-T-TIP® NOSE GUARD

See Figures 69 and 70.

1.Mount the SAFE-T-TIP on the bar nose.

2.Fit the locking rivet or tab in the recessed hole in the guide bar.

3.Tighten the screw with your finger.

4.From the finger tight position, tighten the screw an additional three-quarters of a turn using a spanner.

CLEANING THE AIR FILTER

See Figures 71, 72 and 73.

NOTE: Always clean the air filter before making any mixture adjustments of the carburettor.

1.For access to the air filter and carburettor area, loosen the three screws holding the cylinder cover.

2.Activate chain brake.

3.Lift the front of the cylinder cover past chain brake lever.

4.Lift the back of the cylinder cover past the handle.

5.Before removing the air filter from the carburettor, blow or brush as much loose dirt and sawdust from round the carburettor and chamber as possible.

NOTE: Be sure to pull the choke rod out to keep the carburettor from being contaminated.

6.Remove the screw securing the air filter.

7.Position a flat screw driver between the tabs and twist as shown in the illustration.

8.Lift the air filter off the air filter base.

Choose one of the following cleaning options:

9.To lightly clean, tap the filter against a smooth, flat surface to dislodge most saw dust and dirt particles.

10.For a more thorough cleaning, clean in warm soapy water, rinse, and let dry completely.

NOTE: An alternative method is to clean the filter with compressed air (always wear eye protection to avoid eye injury).

11.Reinstall the air filter, making sure that the tabs on the air filter are located in channels on the air filter bottom before tightening filter retainer screw.

Clean the pre-filter every 25 tanks of fuel or sooner, if required. Remove the cylinder cover, starter assembly and the fan housing baffle for access to the pre-filter in the engine housing.

NOTE: If you use an air hose for drying, blow through both sides of filter.

CAUTION:

Never run the engine without the air filter, serious damage could result.

Make sure the air filter is correctly placed in the air filter cover before reassembly.

CYLINDER COVER

SCREW

SCREWS

Fig. 71

AIR FILTER

AIR FILTER

RETAINING

SCREW

Fig. 72

FAN

HOUSING

BAFFLE

PRE-FILTER

STARTER ASSEMBLY

Fig. 73

UK - Page 33

Page 32 Page 34
Image 33
Page 32 Page 34
Contents Save this Manual for Future Reference OPERATOR’S ManualIntroduction Table of ContentsRead ALL Instructions General Safety RulesDo not Operate a Chainsaw That is Damaged General Precautions Specific Safety RulesSafety Apparel Basic Precautions in the CUTTING/ Work AreaPush and Pull Maintenance PrecautionsKICK-BACK Pull PushSymbol Name Explanation SymbolsRUN StopSpecifications Features Operation Understanding Your Chainsaw Safety DevicesLOW KICK-BACK SAW Chain Guide BarsChain Brake KICK-BACK PrecautionsRUN Position KICK-BACK Brake Position RotationalHandling the Fuel Safely Fuel and RefuellingMixing the Fuel Filling the TankChain OIL System Brake Position Ignition Switch RUN Primer BulbStarting the Engine See Figures 10 toStarting a Cold Engine Starting a Warm Engine Stopping the EngineProper Grip on Handles Preparing for CuttingChain Line Proper GripWork Area Precautions Basic OPERATING/CUTTING ProceduresAdjusting the Carburettor See Figures 24Adjusting Idling Speed Operating the Chain BrakeBrake Position RUN Position Retreat Path Felling Trees Hazardous ConditionsProper Procedure for Tree Felling Planned Line of FallRetreat Notch Approx /3 Diameter Trunk Back CUT HingeHinge Back CUT WedgeBucking Removing Buttress RootsBucking with a Wedge Vertical CUT Loose Section Horizontal KICK-BACK WedgeOverbucking Bucking Logs Under StressUnderbucking LOG Supported AT ONE END Finishing CUTCutting Spring Poles Limbing and PruningLoad Second CUT Finishing CUT Spring PoleAssembling the BAR and Chain MaintenanceCutters Chain Tensioning Screw Chain Maintenance Adjusting the Chain TensionSee Figures 52, 53 Flats on Drive LinksSharpening the Cutters Check for Wear or Damage LEFT-HAND Cutters RIGHT-HAND Maintaining Depth Gauge Clearance TOP Plate Filing AngleSide Plate Angle Maintaining the Guide BAR Restore Original Shape by Rounding FrontMaintaining the SAFE-T-TIP Nose Guard Lubricating HoleMounting the SAFE-T-TIP Nose Guard Cleaning the AIR FilterTighten 3/4 Turn See Figures 71, 72Cleaning the Engine Cleaning the Starter UnitChecking the Fuel Filter Replacing the Sparking PlugChain Catcher Brake Band Clean the Chain Brake Cleaning the Spark Arresting SI- LencerChain Brake Storing the Chainsaw 1 Month or LongerTroubleshooting Problem Possible Cause SolutionBAR and Chain Combinations But chain is not rotating Tions. See FigureSafety Directive WarrantyGuarantee Statement Rtsa / Rtuk / RTG EC Declaration of ConformityPage Ryobi Technologies GmbH

UT74121A specifications

The Homelite UT74121A is a versatile gas-powered string trimmer designed for homeowners and landscapers seeking an efficient tool for maintaining their lawns and gardens. Known for its reliability, the UT74121A combines performance with user-friendly features that make lawn care tasks less daunting.

One of the standout features of the UT74121A is its powerful 26cc 2-cycle engine. This engine provides ample power for cutting through dense grass and weeds, ensuring that tasks are completed quickly and efficiently. The lightweight design of the trimmer, coupled with its ergonomic handle, allows users to maneuver easily, making it ideal for extended use without causing fatigue.

The Homelite UT74121A is equipped with an easy-to-load bump feed spool for quick line replacement. Users can effortlessly advance the cutting line by tapping the trimmer's head on the ground, making it convenient to maintain the desired cutting length without interrupting work. The trimmer uses .095-inch diameter line, which provides durability and resilience against tough conditions.

In terms of design, the UT74121A features a straight shaft that offers increased reach and allows users to access hard-to-reach areas with ease. This design is particularly helpful for trimming along fences, in flower beds, and under low-hanging branches. The adjustable handle height further enhances user comfort, allowing for customization based on individual preferences.

Safety is a primary concern for any outdoor equipment, and the UT74121A incorporates several features to enhance user safety. It comes with a protective shield that prevents debris from being thrown during operation, and the easy-starting system reduces pull effort, making it accessible for users of all skill levels.

The trimmer also adheres to stringent emissions standards, making it an environmentally-friendly option in today's market. With proper maintenance, the UT74121A ensures longevity and sustained performance, making it a valuable addition to any landscaping toolkit.

Overall, the Homelite UT74121A is a powerful and efficient solution for those seeking a reliable string trimmer. Its combination of a robust engine, user-centric design, and safety features makes it suitable for various lawn care tasks, ensuring gardens and lawns remain well-groomed year-round.
Top Page Image Contents