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MAINTENANCE

PB-7910 H/T

44

X7501201800

© 10/23 ECHO Incorporated

2.

Complete warm up by running at full throttle for 5 minutes, operating

choke twice to clear air from carburetor chambers.

3.

Check idle speed and reset if

necessary. If a tachometer is

available, idle speed screw (A)

should be set to the

specifications found on

“Specifications” Page of this

manual. Turn idle screw (A)

clockwise to increase idle

speed; counterclockwise to

decrease idle speed.

A

A

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Содержание PB-7910T

Страница 1: ...e exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Read and understand all provided literature before use Failure...

Страница 2: ...ontrol Exhaust Evaporative 14 EPA Emissions Control Information 14 Description 15 Contents 19 Assembly 20 Install Blower Pipes and Stick Handle 20 Install Blower Pipes 22 Operation 24 Fuel 25 Starting...

Страница 3: ...information for safety operation maintenance storage and assembly specific to this product Scan QR codes for more information For additional literature including safety manuals where applicable or que...

Страница 4: ...ation operation or maintenance of this product call the ECHO Consumer Product Support Department at 1 800 432 ECHO 3246 from 8 00 a m to 5 00 p m Central Standard Time Monday through Friday Before cal...

Страница 5: ...nal injury or death if not avoided The safety alert symbol accompanied by the word WARNING calls attention to an act or condition which CAN lead to serious personal injury or death if not avoided The...

Страница 6: ...Carburetor Adjustment High Speed Mixture Wear Eye Ear and Head Protection Carburetor Adjustment Idle Speed Wear Hand Protection Carburetor Adjustment Low Speed Mixture Safety Alert Stop Switch Hot Su...

Страница 7: ...bols will appear on your unit DO NOT Smoke Near Fuel Choke Control COLD START Position Choke Closed Choke Control RUN Position Choke Open Wear Slip Resistant Footwear Beware of thrown objects Keep Bys...

Страница 8: ...ed improperly and or safety precautions are not followed Proper clothing and safety gear must be worn when operating unit Physical Condition Your judgment and physical dexterity may not be good If you...

Страница 9: ...her plant matter such as pollen Make sure the mask does not impair your vision and replace the mask as needed to prevent air restrictions Proper Clothing Wear snug fitting durable clothing Pants shoul...

Страница 10: ...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 vibration and cold may cau...

Страница 11: ...n Instead try to maintain a straight wrist position Also when grasping use your whole hand not just the thumb and index finger Take periodic breaks to minimize repetition and rest your hands Reduce th...

Страница 12: ...protection If you are approached stop the engine Avoid blowing debris towards people pets open windows or vehicles when using unit Review area to be cleared Look for potential hazards such as stones o...

Страница 13: ...repairs done only by an authorized service dealer Moving parts can amputate fingers or cause severe injuries Keep hands clothing and loose objects away from all openings ALWAYS stop engine disconnect...

Страница 14: ...l is located on the engine This is an EXAMPLE ONLY information on label varies by engine FAMILY Product Emission Durability Emission Compliance Period The 50 or 300 hour emission compliance period is...

Страница 15: ...s or etching s on your unit Make sure they are legible and that you understand and follow the instructions If any cannot be read replacements can be ordered from your ECHO dealer Images shown below a...

Страница 16: ...2 Throttle Position Lever Stop Switch 3 Air Cleaner 4 Shoulder Harness 5 Safety Decal Etching 6 Stick Handle 7 Blower Pipes 8 Flexible Pipe 9 Spark Arrester Muffler with or without Catalyst 10 Fuel Ta...

Страница 17: ...etching s on your unit Make sure they are legible and that you understand and follow the instructions If any cannot be read replacements can be ordered from your ECHO dealer Images shown below are for...

Страница 18: ...Cleaner 2 Shoulder Harness 3 Safety Decal Etching 4 Handle 5 Throttle Position Lever 6 Throttle Trigger 7 Blower Pipes 8 Flexible Pipe 9 Spark Arrester Muffler with or without Catalyst 10 Fuel Tank 1...

Страница 19: ...mmediately notify your retailer or ECHO Dealer of damaged or missing parts Use the contents list to check for missing parts PB 7910H PB 7910T 1 Power Head 1 Flex Pipe 1 Swivel Pipe 1 Straight Pipe 1 E...

Страница 20: ...result Install Blower Pipes and Stick Handle 1 Assemble clamps A onto both ends of flexible pipe B 2 Insert anti static wire through flex tube into swivel pipe 3 Assemble swivel pipe C into flexible p...

Страница 21: ...operation Tighten knob E 8 Assemble straight pipe J onto swivel pipe C until you feel light resistance Hold swivel pipe and turn straight pipe clockwise engaging positive locking channels until conne...

Страница 22: ...pipe B Note Clamp with cable guide loop G fits elbow end of flexible pipe 2 Insert anti static wire through flex tube Note A light lubricant may be used to ease assembly of flexible pipe to blower el...

Страница 23: ...ve handle E to desired position Tighten knob H 9 Assemble straight pipe J onto swivel pipe until you feel light resistance Hold swivel pipe and turn straight pipe clockwise engaging positive locking c...

Страница 24: ...getation This unit is equipped with a spark arrester to prevent discharge of hot particles from the engine Contact local fire authorities for laws or regulations regarding fire prevention requirements...

Страница 25: ...ECHO branded fuel is recommended to extend engine life in all air cooled 2 stroke and 2 4 stroke hybrid engines Two Stroke Oil A two stroke engine oil such as ECHO branded 2 stroke oils meeting ISO L...

Страница 26: ...l tanks cans may be under pressure Always loosen fuel caps slowly allowing pressure to equalize NEVER refuel a unit when the engine is HOT or RUNNING DO NOT fill fuel tanks indoors ALWAYS fill fuel ta...

Страница 27: ...troke oil to gasoline 3 Close container and shake to mix oil with gasoline 4 Add remaining gasoline close fuel container and remix Spilled fuel is a leading cause of hydrocarbon emissions Some locatio...

Страница 28: ...rottle arm downward to a comfortable operating position PB 7910 H T Recoil starter Use short pulls only 1 2 2 3 of rope length for starting Do not allow the rope to snap back in Always hold the unit f...

Страница 29: ...e fires and dies proceed to step 6 6 Choke After engine fires or 5 pulls move choke lever back to RUN position then pull starter handle ropeuntilenginestartsandruns Allow unit to warm up at idle for s...

Страница 30: ...ose the choke 1 Throttle Lever Move throttle lever A to IDLE position 2 Purge Bulb Pump purge bulb C until fuel is visible Pump bulb an additional 4 or 5 times 3 Recoil Starter Pull recoil starter han...

Страница 31: ...STOP position PB 7910T 1 Throttle Lever Release throttle trigger Move Throttle Lever A forward to idle position and allow engine to return to idle before shutting off engine 2 Throttle Lever Move Thro...

Страница 32: ...with local noise regulations Continuous low speed operation may allow fuel oil residue to build up on the piston and cause rapid build up of carbon on the spark arrester screen resulting in overheati...

Страница 33: ...lks patios and drives Use rakes and brooms to loosen debris before blowing 6 Additional speed may be necessary to clean grass and leaves from a lawn or flower bed 7 Higher speed may be necessary to mo...

Страница 34: ...cause severe injuries Keep hands clothing and loose objects away from all openings Always stop engine disconnect spark plug and make sure all moving parts have come to a complete stop before removing...

Страница 35: ...f emission control components other than those specifically designed for this unit is a violation of federal law Skill Levels Level 1 Easy to do Common tools may be required Level 2 Moderate difficult...

Страница 36: ...ENANCE PROCEDURE NOTES 1 Replacement is recommended based on the finding of damage or wear during inspection 3 Months Air Filter Replace 1 1 Fuel Filter Inspect 1 Fuel Cap Gasket Spark Plug Inspect Cl...

Страница 37: ...dirt from inside cover Foam Pre Filter Clean foam pre filter A in water detergent solution and rinse with clean water Wrap the foam pre filter in a clean dry cloth and squeeze do not wring dry Allow t...

Страница 38: ...ne while removing fuel filter from tank 3 Remove the filter from the line and install the new filter Note Federal EPA regulations require all model year 2012 and later gasoline powered engines produce...

Страница 39: ...3 Adjust spark plug gap by bending outer electrode 4 Tighten spark plug to 102 153 kgf cm 86 133 lbf in Cooling System Level 2 To maintain proper engine operating temperatures cooling air must pass f...

Страница 40: ...nance Any failure attributed to lack of maintenance is not warranted Clear Debris 1 Brush accumulated debris from intake grill and other cooling passages Cleaning Cylinder Fins 1 Disconnect spark plug...

Страница 41: ...and overheating Spark arrester screen must be checked periodically 1 Disconnect spark plug lead from spark plug 2 Remove engine cover 3 Remove spark arrester screen C from muffler Replace screen if pl...

Страница 42: ...and muffler gaskets B 3 Use a wood or plastic scraping tool to clean deposits from cylinder exhaust port Never use a metal tool to scrape carbon from the exhaust port Do not scratch the cylinder or p...

Страница 43: ...rformance up to 335 m 1 100 ft above sea level To maintain proper engine operation and emission compliance above 335 m 1 100 ft ASL the carburetor may need to be adjusted by an authorized service deal...

Страница 44: ...operating choke twice to clear air from carburetor chambers 3 Check idle speed and reset if necessary If a tachometer is available idle speed screw A should be set to the specifications found on Speci...

Страница 45: ...tle speed adjust throttle cable 1 Loosen handle adjustment knob C and tilt tube throttle handle forward to expose adjustment screw D 2 Turn adjustment screw until throttle trigger free play is 4 6 mm...

Страница 46: ...uretor No fuel at carburetor Fuel strainer or fuel line obstructed Clean or replace See your dealer Fuel at cylinder No fuel at cylinder Carburetor See your dealer Muffler wet with fuel Fuel mixture t...

Страница 47: ...ent Fuel vent plugged Contaminated fuel Clean or replace Spark plug Plug dirty or worn Normal wear Clean and adjust or replace Carburetor Improper adjustment Vibration Adjust Cooling system Cooling sy...

Страница 48: ...accumulation of grease oil dirt and debris from exterior of unit 4 Perform all periodic lubrication and services that are required 5 Tighten all the screws and nuts 6 Drain fuel tank completely Press...

Страница 49: ...catalyst Carburetor Diaphragm with purge pump Ignition System Flywheel magneto capacitor discharge ignition type Spark Plug NGK CMR7H Gap 0 65 mm 0 026 in Fuel Mixed gasoline and two stroke oil Gasol...

Страница 50: ...be sold or misused by ECHO Incorporated Registering your purchase enables us to contact you in the unlikely event of a service update or product recall and verifies your ownership for warranty conside...

Страница 51: ...PB 7910 H T PRODUCT REGISTRATION X7501201800 51 10 23 ECHO Incorporated ECHO Incorporated...

Страница 52: ...ECHO INCORPORATED 400 Oakwood Road Lake Zurich IL 60047 www echo usa com P57512001001 P57512999999 P57613001001 P57613999999 P57712001001 P57712999999 P57813001001 P57813999999...

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