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Echo PB1000 - 1990 model...just rebuilt the carburetor...the unit starts but stays in a 4 cycle mode at full throttle and dies when the trigger is released for idle...the high speed and the low speed screws are screwed all the way in...(only way it will run) it sputters and starts and dies otherwise. Any ideas to help me out? Also the gaskets had to be reversed on the top of the carb to make it run...there are two layers of gaskets on the top and the bottom of the carb. One is thick and the other is a thin one. Thanks for any help you can lend...Chris

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Posted on Jan 02, 2017

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  • 148 Answers

SOURCE: Echo leaf blower is bogging down at full throttle,

Have you tried cleaning the carb?

Posted on Aug 24, 2009

Testimonial: "Thanks for the suggestion, that sounds like what it may be. "

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  • 4088 Answers

SOURCE: Husqvarna 136 chainsaw

Both H and L screws should be set 1-1/2 turns out from stop. Turn the idle speed screw two turns in from where it is now. When you had the carburetor apart, did the rubber diaphragm seem hard? If it did, re-kit the unit. When you clean the carburetor body, use spray carburetor cleaner and use compressed air to blow out all fuel passages including the two mixture control screw holes. Be sure to check the condition of the fuel line and the air cleaner. Even a plugged muffler can cause weird problems.

Posted on Sep 01, 2009

  • 164 Answers

SOURCE: Poulan Weed Eater PPB250E won't accelerate

definatley running out of fuel. this sounds dumb-just check it. the fuel line from the tank to carb is made of tygon, it gets hard and cracks allowing air to enter fuel line and lean out the unit,sometimes till it quits. also drain the fuel from the tank, look in tank, youll see a hose with a weighted fuel filter in the end of it, get a peice of wire,carfully pull it out and chack for cracks or a broken off 'clunk' fuel filter. then which is hard, the fuel pump-a little built in vacume diaphram in the carb that re-verberates with engine vacume and pumps fuel at high demand times. there will be a metal cover on the carb with a hole in the middle, carfully remove the screws ans the diaphram will be part of the gasket so dont rip it or youll need a carb rebuild kit. look for rips or tears or a broken return spring. also make sure the carb hasnt loosened up from the engine, this will cause a vacume leak and then the pump wont keep up. check the lines first that what you will probably find. good luck!

Posted on Sep 03, 2009

bbreton
  • 437 Answers

SOURCE: my echo pb1000 gas blower wants to stall at high

Yes it could need both of them plus some fresh gas mixture to boot. I would start with the fuel filter and then go to the carburetor.
HTH
Good Day.

Posted on Oct 27, 2009

dontbother10
  • 2220 Answers

SOURCE: pb1000fuel to oil mix ratio for echo

New Echo manuals say "50:1 for all engines regardless of what is printed in manual."
Fuel/Oil Mixture

  1. Use a quality 2 cycle oil and mix it to the OIL supplier's recommended ratio. Today I use Stihl 2 cycle oil mixed @ 50:1 in a Pioneer that I purchased new in 1980. There are no gouges or scratches on the piston or cylinder and I have no carbon build up on the piston top. The manual (on stone tablets) recommends 24:1. Over the years the mixture has leaned from 24:1 (Saw Recommendation) to 28:1 (Lawn boy mower recommendation) to 32:1 (Oil provider 2gal premium/8oz chainsaw 2-cycle engine oil - used for many years) and finally the last 5 (±) years 50:1 (1gal premium/2.6oz Stihl 2-cycle engine oil)
  2. Any fuel containing ethanol is not good with chainsaws. Mix what you expect to use within a few weeks. Anything over 1.5 months old use up in a 4 cycle engine. HTH
Lou

Posted on Nov 09, 2009

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