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I have a echo pb755h backpack blower that has excessive oil in the air cleaner

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  • 755 Answers

Your main jets check valve may be damaged or crudded up so that the minor backflow from the engine pushed fuel out the carb into the air filter. The gasoline part evaporates and leaves the oil behind. Hence the oily air filter. This condition might be remedied by using a fuel system cleaner or it may need to have carb service. If the carb is a cheap enough unit you may consider just getting a replacement if the backpack was a decent high dollar unit.

Be safe and good luck!

Posted on Nov 28, 2014

Testimonial: "Thank you very much. You know your stuff now that makes sense i will give that a shot."

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Echo backpack blower stops after 20 minutes

Make sure the fuel tank cap inlet valve is working properly, this will allow a vapor lock if it is not. Then check the fuel line in tank to make sure the pickup filter is not hung up in tank thereby allowing the fuel to get below the pickup. Also check the fuel line for holes. You can also try toro.com customer care, manuals and parts, type in model no. then get owners manual and see if in troubleshooting section it list this problem.

Posted on Apr 06, 2009

  • 2 Answers

SOURCE: Need to replace fuel filter

Fuel filter is located inside the fuel tank. You have to make a hook out of about 10" of stiff wire (wire coat hanger works perfect) Hook end should be about 1/2" wide. Remove the fuel cap, insert the wire hook and snag the fuel supply tube with the filter attached to the end. Pull it back through the fuel filler opening, replace the filter and reinsert.

Posted on Apr 15, 2009

wilsodfarm
  • 986 Answers

SOURCE: what is the gas;oil ratio for the echo 403T backpack leaf blower.

50 to 1

Posted on Nov 01, 2009

rwvanlue
  • 486 Answers

SOURCE: I have an Echo Backpack Blower PB46-LN that is

This senerio is an 'over-rich' condition, most often caused by an improper fuel/oil ratio mix, and the 'exhaust screen' or 'spark arrestor' on the outlet of the muffler is plugged. Cleaning the screen may be all that is needed to correct the problem. **Make sure this screen is clean, and operate engine for at least 5 minutes before making any of the suggested adjustments below.

Basics to check:
1) Spark plug - brown or dark brown - OK
a) is it carbon or fuel fouled
b) is there spark

2) Muffler remove for inspection
a) exhaust screen clean or plugged
b) inspect cylinder wall/piston as the flywheel is slowly rotated

Overfuel or 'rich' condition
Basics to check:
1) Spark plug - brown or dark brown - OK
a) is it carbon or fuel fouled
b) is there spark

2) Muffler remove for inspection
a) exhaust screen clean or plugged
b) inspect cylinder wall/piston as the flywheel is slowly rotated
3) Check Air filter for fuel saturation
4) Allow engine to run for 5 minutes to excess fuel from muffler
5) Fuel mixture ratio: Make sure the oil mix is per your manufactures recommendations
6) If after the above the engine is still smoking and blubbering:
Adjust carb mixture screws to a 'less rich' setting
*NOTE: only move mixture screws 1/8 of a turn at a time,
and try operation before any more adjustment

Posted on Nov 12, 2009

Testimonial: "Now I guess its starting fine (on second hard pull), but, white smoke comes out while running and doesnt stop, also it makes a clackering noise while its running, what might these 2 problems be from?"

  • 430 Answers

SOURCE: ho spark on a pb 403t backpack blower

Be sure you have no spark ( 90% of the units that come into my shop for repair with the complaint of no spark- have a fuel issue). Be sure the spark plug is good.
If no spark then remove the ground wire from the module and check for spark again. You must use the recoil starter- spinning by hand is not sufficient. If still no spark then replace module. If there is spark with the ground wire disconnected then there is a problem with the kill switch or a bad wire.

Posted on Nov 30, 2009

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