Sears 358.79828 manual Blade Safety, What Causes Blade THRUST?, When does Blade Thrust OCCUR?, 787

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OPERATION-SAFETY

m ii

BLADE SAFETY

DANGER

THIS POWER UNIT CAN BE DANGEROUS! THIS UNIT CAN CAUSE SERIOUS INJURY OR BLINDNES;

TO THE OPERATOR AND OTHERS. THE WARNINGS AND SAFETY INSTRUCTIONS IN THIS MANUAL

MUST BE FOLLOWED TO PROVIDE REASONABLE SAFETY AND EFFICIENCY IN USING THIS UNTO. THE OPERATOR IS RESPONSIBLE FOR FOLLOWING THE WARNINGS AND INSTRUCTIONS IN THIS

MANUAL AND ON THE UNI_. READ THE ENTIRE OPERATOR'S MANUAL BEFORE ASSEMBLING AND

USING THIS UNIT! RESTRICT THE USE OF THIS POWER UNIT TO PERSONS WHO READ, UNDER- STAND AND FOLLOW THE WARNINGS AND INSTRUCTIONS IN THIS MANUAL AND ON THE UNIT.

BLADE THRUST - WHEN THE SPINNING BLADE CONTACTS

ANYTHING IT CANNOT CUT, A DANGEROUS REACTION MAY

OCCUR CAUSING THE ENTIRE UNIT AND OPERATOR TO BE

THRUST VJOLENTL_IN AN_DIRE_TION; T_IIS_,RF_.CTiONA, IS _i

CALLED BLADE 7T.4BUST;FASi:ARESULT,_T/-JE/O_RCAN LOSE CONTROL ,OF:THE_UNIT.:_USE HANDLEBAR;_SHOULDER -i

HARNESS; :AND KEEPoMETAIJ'BI_ADE SHIEED INF:PE_CE. •MAKE

SURE OTHERS ABE_A_÷JLEAST SO,_FEEF[_(15iMETERS) AWAY.

KEEP BLADE SHARR CUT AT FULL THROTTZE AND FROM _ ;

YOUR RIGHT TO LEFT.. KEEP HANDS, FEET AND UNIT IN PROP- ER POSITION; REFER TO "GUARD AGAINST BLADE THRUST."

BLADE THRUST

ARBOR

PROPER BLADE- USE ONLY THE 8 3/4 INCH SAW BLADE

OR 10 INCH BRUSH TRI-BLADE AND PROPER HARDWARE AS SHOWN. THE USE OF ANY OTHER PARTS CAN RESULT IN SERIOUS INJURY. DO NOT USE ANY ACCESSORY OR

ATTACHMENT OTHER THAN THOSE RECOMMENDED BY THE MANUFACTURER FOR USE WITH THIS UNIT. BLADES THAT

ARE BENT, WARPED, CRACKED, BROKEN, OR DAMAGED CAN FLY APART AND CAUSE SERIOUS INJURY. DO NOT USE; THROW AWAY.

OPENING .\

.787" _ "-

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8 3/4" Saw Blade -tO"Brush Td-BISdE

BLADE THRUST IS a reactionthat only occurs REDUCE THE CHANCE OFBLADETHRUS'r

when using a bladed unit. This reaction can cause serious injury such as amputation. Carefully study this sectlon. It is importantthat you understand what causes blade thrus_ how you can reduce the chance of It occurring; and how you can remain in:controlof the unit if blade thrustcocurs.

WHAT CAUSES BLADE THRUST?

Blade Thrustcan ocourwhen the spinning blade_€on_

tacts an object that it does not cut. This contact causes the blade to stop for an instantand then sud- denly move or =thrust"away from the object that was hit. The "thrusting" reaction can be violent enough to

cause the operator to be propelled in any direction and lose control of the unit. The uncontrolled unit can

cause serious injury if the blade contacts the opera- tor or others.

WHEN DOES BLADE THRUST OCCUR?

Blade thrust can occur without warning if the blade snags, stalls, or binds. This is more liketyto occur in areas where it is difficult to see the material being cut. By using the unit properly, the occurrence of blade thrust will be reduced and the operator will be less likely to lose control.

The forward tip on the metal blade shield helps to re- duce .the occurrence of blade thrust but cannot pre- vent the occurrence. The operator must follow all

warnings and safety instructions in this manual to lessen the chance of blade thrust ocourdng and to maintain control of unit ifthe reaction does occur.

Cut vegetation up to 2 1/2" diameter saplings with saw blade.

• Cutonlygrass, weeds, andwoedybrushuptol!2" in diameter with the brush t fi-bisde:Do:nottet theblade

contact matedal it cannot cut such as stumps, rocks,

. fences, metal, etc., or clusters of hard, woody brush having a diameter graater than 2 1/2 inches.

Keep the blade sharp. A dull blade is more likely to snag and thrust.

Cut only at full throttle. The blade has maximum cut-

ting power at full throttle and is less likely to bind or stall.

=Feed" the blade deliberately and nottoo rapidly. The blade can thrust away if it is fed too rapidly.

Cut only from your fight to your teft.

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Contents Page Page Manual Safety RulesLeg Guards EyeBoots Protection Hazard Zone LabelsAir gap.010-.014 Maintenance AgreementProduct Specifications Hardware Contents Throttle Handle Assembly See Fig AssemblySpark Arrestor Screen Assembly See Fig Uerore installing me nanolecar,you-musLunmreadtheIii Installing Dual MNE Head Cutting Line Head ConfigurationInstalling UNE LIMI3R-ONTO Line Trimmer ShieldIstalung the Metal Blade Shield Rush TRI-BLADE ConfigurationREINSTALLATiON Instalung the SAW Blade SAW Blade ConfigurationPRE-INSTALLATION See ,13Inside OperationStarter Rope SPARKPLUGv \ ShieldShoulder Turn the engine Off before adjusting handlebarStopping Your Engine Blade TRANSPORT/STORAGE Cover Harness and hook on the unitSafety OPERATION-SAFETY3LADE Safety Coasting BLADE- ThebladecontinuestoWhat Causes Blade THRUST? Blade SafetyWhen does Blade Thrust OCCUR? 787Sapling SAW Blade Brush TRI-BLADEBlade Blade Continues to Spin After the Engine is Turned OFRUnit S .FEW Line Trimmer SafetyPerator Safety Nttclcnne%/hemnagngoatesrapstasTg , 23 , 24 , 25 RningPerating ! USE Tips Nique increases line wearFuel Stabilizer Fuel Mixture ChartCycle OIL Gasoline and OIL MixtureStarting a Flooded Engine Topping Your EngineStarting a Warm Engine That has not =.FORE Starting the EngineGeneral Recommendations Maintenance ScheduleCustomer Responsibi Lities Before Each USEIeck for Loose FASTENERS/PARTS Inspect Muffler Spark Arrestor Screen if InstalledCleaning the Spark Arrestor Screen ECK Gear BOX LubricationInstalling Spool with Line Already Service and AdjustmentsDual Line Replacement Wound ,33,34,35SAW Blade Sharpening Fig Ilade SharpeningBrush TRI-BLADE Sharpening Fig Manner to Maintain a Balanced BladeIdle Speed Adjustment Carburetor AdjustmentsAdjusting Procedure High Speed Mixture AdjustmentStorage Fuel containerSymptom Cause Remedy Trouble Shooting PointsShooting Chart TroubleRepair Parts 4143 503-797501Sears Brushwacker Model Repair PARTs Scrirt.ioa Plastic Shield Incl. Line LimlterTable of Contents Part Number If YOU Need Repair Service or PartsLowing Information 101-870491