background image

22

CARBURETOR

 

ADJUSTMENT

Engine Break-In

New engines must be operated a minimum duration of two tanks of fuel
break-in before carburetor adjustments can be made. During the break-in
period your engine performance will increase and exhaust emissions will
stabilize. Idle speed can be adjusted as required.

High Altitude Adjustment

High altitude adjustment is not required for proper operation of this
engine.

Level 2.

Tools required:

Screwdriver, tachometer (Echo P/N 99051130017)

Parts required:

None.

NOTE
Do not adjust carburetor unless necessary.  If you have difficulty,
see your ECHO dealer.

Adjustment Screws

Idle Speed (A)

Controls throttle opening at idle.

Low (LO) Speed (B)

Controls amount of fuel at low speed and
supplementary fuel for smooth progression from
idle to high speed.

High (HI) Speed (C)

Controls amount of fuel at full throttle

Before Adjustment

Check that:

• Air filter is clean and properly installed.

• Spark arrestor screen and muffler are free of carbon.

• Blower pipes are installed.

A

C

B

Содержание PB-403H

Страница 1: ...tor s Manual MODELS PB 403H PB 403T WARNING DANGER Readrulesforsafeoperationandallinstructionscarefully ECHOprovidesthis Operator sManualwhichmustbereadandunderstoodforproperandsafeoperation X753001962 06 05 X7531120302 ...

Страница 2: ...Personal Condition and Safety Equipment 3 EquipmentCheck 6 EmissionControl 6 Description 7 Contents 11 Assembly 12 InstallBlowerPipes StickHandle PB 403H 12 InstallBlowerPipes PB 403T 13 Operation 14 Fuel 14 StartingColdEngine 15 StartingWarmEngine 16 Stopping Engine 16 OperatingBlower 17 Maintenance 18 SkillLevels 18 Maintenance Intervals 18 AirFilter 19 FuelFilter 19 SparkPlug 20 CoolingSystem 2...

Страница 3: ...ATIONAL SYMBOLS Symbol description application Symbol form shape Symbol description application Symbol form shape Read and understand Operator s Manual Fuel and oil mixture Symbol description application Symbol form shape Symbol description application Symbol form shape Hot Surface Carburetor adjustment Idle speed Carburetor adjustment High speed mixture Wear eyes ears and head protection Emergenc...

Страница 4: ... or net Hot Humid Weather Heavy protective clothing can increase operator fatigue which may lead to heat stroke Schedule heavy work for early morning or late afternoon hours when temperatures are cooler Vibration and Cold It is believed that a condition called Raynaud s Phenomenon which affects the fingers of certain individuals may be brought about by exposure to vibration and cold Exposure to vi...

Страница 5: ... arm muscles Immediately stop using all power equipment and consult a doctor if you feel tingling numbness or pain in the fingers hands wrists or arms The sooner RSI CTS is diagnosed the more likely permanent nerve and muscle damage can be pre vented WARNING DANGER Do not operate this product indoors or in inadequately ventilated areas Engine exhaust contains poisonous emissions and can cause seri...

Страница 6: ...005 2006 CALIFORNIA EMISSION REGULATIONS FOR SORES REFER TO OWNER S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS EQUIPMENT CHECK WARNING DANGER Use only ECHO approved attachments Serious injury may result from the use of a non approved attachment combination ECHO INC will not be responsible for the failure of cutting devices attachments or accessories which have not been tested and approv...

Страница 7: ...m If a decal cannot be read a new one can be ordered from your ECHO dealer See PARTS ORDER ING instructions for specific information P N89016009461 General Warning Decal located on top of blower housing P N 89016006361 1 2 3 5 6 7 4 Hot Decal near muffler 71 Category III dB A Measured at 50 ft 15m per ANSI B175 2 P NX508000140 Sound Label located on blower housing 10 11 12 13 14 8 9 ...

Страница 8: ...ver UP to close choke starting position and for emergency stopping Move DOWN to open choke run position 9 PRIMER BULB Pumping primer bulb before starting engine draws fresh fuel from the fuel tank priming the carbure tor for starting Pump primer bulb until fuel is visible and flows freely in the clear fuel tank return line Pump bulb an additional 4 or 5 times 10 HANDLE Rotates downward for throttl...

Страница 9: ... 14 15 5 6 4 8 16 9 10 P N 89016009461 General Warning Decal located on top of blower housing P N 89016006361 Hot Decal near muffler 71 Category III dB A Measured at 50 ft 15m per ANSI B175 2 P NX508000140 Sound Label located on blower housing PB 403T ...

Страница 10: ...8 SHOULDER HARNESS Used to support unit on operator s back The straps are adjustable 9 CHOKE Move lever UP to close choke starting position and for emergency stopping Move DOWN to open choke run position 10 PRIMER BULB Pumping primer bulb before starting engine draws fresh fuel from the fuel tank priming the carbure tor for starting Pump primer bulb until fuel is visible and flows freely in the cl...

Страница 11: ...ent __ 1 PlasticBag __ 2 Clamps w screws __ 1 StickHandle __ 1 Bolt6x45 __ 1 Washer 6 __ 1 Wing nut __ 1 Echo Power Blend TM 2 stroke oil sample PB 403T __ 1 PowerHead __ 1 FlexPipe __ 1 Pipew swivel __ 1 StraightPipe __ 1 CurvedPipe __ 1 Operator s Manual __ 1 Warranty Registration Card __ 1 ECHO Emissions and Warranty Statement __ 1 PlasticBag __ 2 Clamps w screws __ 1 CableTie __ 1 Echo Power B...

Страница 12: ... ease assembly of flexible pipe to blowerelbow 4 Tighten clamps A 5 Loosen wing nut E completely and expand stick handle clamp F 6 Align notches G in handle clamp with pipe pegs H Stick handle should be angled away from operator 7 Slide stick handle onto pipe with swivel C 8 Position stick handle for comfortable operation and tighten wing nut E 9 Assemble straight pipe J to pipe with swivel C turn...

Страница 13: ...th swivel C 4 Position throttle linkage so cable passes between the elbow G and frame and runs along the top of the flexible pipe Assemble flexible pipe B to elbow G on blower NOTE A light lubricant may be used to ease assembly of flexible pipe to blowerelbow 5 Tighten clamps A 6 Install cable tie F in second groove of flexible pipe 7 Move handle E to desired position Tighten knob H hand tight and...

Страница 14: ...andards Engine problems due to inadequate lubrication caused by failure to use an ISO L EGDandJ A S O FCcertifiedoil suchasEchopremiumPower Blend TM will void the two stroke engine warranty Emission related parts only are covered for two years regardless of two stroke oil used per the statement listed in the Emission Defect Warranty Explanation IMPORTANT EchopremiumPowerBlendTM Universal2 StrokeOi...

Страница 15: ...ttle lever A forward to idle position Slide stop switch B forward to run position PB 403H PB 403T 2 Choke Move choke C up to Cold Start position 3 Primer Pump primer bulb D until fuel is visible and flows freely in the clear fuel tank return line Pump bulb an additional 4 or 5 times 4 Recoil Starter Pullrecoilstarterhandle E untilenginefires 5 pullsmaximum 5 Choke Move choke C down to run position...

Страница 16: ...le Lever Move throttle lever A to idle detent position and allow engine to return to idle before shutting off engine 2 Throttle Lever Move throttle lever A to O Stop position PB 403T 1 Throttle Lever Release thottle trigger F Move throttle lever A forward to idle position and allow engine to return to idle before shutting off engine 2 Stop Switch Slide stop switch B to Stop position WARNING DANGER...

Страница 17: ...B 403T Control engine speed with throttle trigger A or throttle position lever B Rotate throttle position lever forward for lower speed back for higher speed 4 Use lower speed to blow dry leaves from walks patios and drives 5 Additional speed may be necessary to clean grass and leaves from a lawn or flower bed 6 Higher speed may be necessary to move gravel dirt snow bottles or cans from a driveway...

Страница 18: ...N O M 0 7 2 R O S R U O H Y L R A E Y s e r u d e c o r P e c n a n e t n i a M r e l a e D o h c E d e d n e m m o c e R t r o P t s u a h x E r e d n i l y C n o b r a c e D n a e l C t c e p s n I 3 C I s e r u d e c o r P e c n a n e t n i a M f l e s r u o Y t I o D r e t l i F r i A e c a l p e R n a e l C t c e p s n I 1 C I R e k o h C n a e l C t c e p s n I 2 C I r e t l i F l e u F e c ...

Страница 19: ... and very dirty replace 3 If element can be cleaned and reused be certain it still fits the cavity in the air cleaner cover is installed with the original side out FUEL FILTER Level1 Tools required 200 250mm 8 10in lengthofwirewithoneend bent into a hook clean rag funnel and an approved fuel container Parts required TuneUpKitP N90070 WARNING DANGER FuelisVERYflammable Useextremecarewhenmixing stor...

Страница 20: ...ush Cross HeadScrewdriver Parts Required None if you are careful IMPORTANT To maintain proper engine operating temperatures cooling air must pass freely through the cylinder fin area This flow of air carries combustion heat away from the engine Overheating and engine seizure can occur when Air intakes are blocked preventing cooling air from reaching the cylinder Dust and grass build up on the outs...

Страница 21: ...t be checked periodically 1 Remove spark plug and engine cover five screws 2 Remove spark arrestor cover A gasket B and spark arrestor screen C from muffler Replace screen if plugged with carbon deposits NOTE When cleaning carbon deposit be careful not to damage the catalyticelementinsidemuffler 3 Install spark arrestor screen gaskets and cover 4 Install spark plug and engine cover Cylinder Exhaus...

Страница 22: ... of this engine Level2 Tools required Screwdriver tachometer EchoP N99051130017 Parts required None NOTE Do not adjust carburetor unless necessary If you have difficulty see your ECHO dealer AdjustmentScrews Idle Speed A Controls throttle opening at idle Low LO Speed B Controls amount of fuel at low speed and supplementary fuel for smooth progression from idle to high speed High HI Speed C Control...

Страница 23: ...ustment which can cause engine failure Do not exceed recommended HI speed engine R P M during operation or for long periods during adjustment 1 Start engine run at idle for one minute 2 Complete warm up by running at full throttle for 5 minutes operat ing choke twice to clear air from carburetor chambers 3 Run at idle and accelerate to check for smooth transition from idle to high speed if engine ...

Страница 24: ... e i d t u b t o n s e o d e t a r e l e c c a y l r e p o r p r e t l i f r i A y t r i d r e t l i f r i A r a e w l a m r o N e c a l p e r r o n a e l C r e t l i f l e u F y t r i d r e t l i f l e u F s e u d i s e r s t n a n i m a t n o C n i l e u f e c a l p e R t n e v l e u F d e g g u l p t n e v l e u F l e u f n i s e u d i s e r s t n a n i m a t n o C e c a l p e r r o n a e l C g...

Страница 25: ...er 30 Days Do not store your unit for a prolonged period of time 30 days or longer without performing protective storage mainte nance which includes the following 1 Store unit in a dry dust free place out of the reach of children WARNING DANGER Do not store in enclosure where fuel fumes may accumulate or reach an open flame or spark 7 Remove the spark plug and pour 7cc 1 4 oz of fresh clean ECHO 2...

Страница 26: ... SparkPlug NGKBPM 8YGap0 65mm 0 026in ExhaustSystem Spark Arrestor Muffler w catalyst Fuel Mixed GasolineandTwo strokeOil Fuel OilRatio 50 1 two stroke air cooled engine oil Gasoline 89 Octane unleaded DO NOT use fuel containing methyl alcohol more than 10 ethyl alcohol or 15 MTBE Oil PowerBlendTM PremiumUniversal2 StrokeOil Fuel Tank Capacity 1 75lit 64 3USfl oz RecoilStarterSystem Automatic Reco...

Страница 27: ...27 POWER BLOWER OPERATOR S MANUAL NOTES ...

Страница 28: ... you require assistance or have questions concerning the application operation or maintenance of this product you may call the ECHO ConsumerProductSupportDepartmentat1 800 673 1558from8 30am to 4 30 pm Central Standard Time Monday through Friday Before calling please know the model and serial number of your unit to help your Consumer Product Support Representative WARRANTY REGISTRATION You may reg...

Отзывы: