Question about Echo CS400 18" Chain Saw

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On my CS440 18inch, When i try to start it,it wont,I prime the carb once it fires its only burning what I primed it with. I can smell gas but it wont run it used to just great,now nothin

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The fuel may be getting restricted because of dust getting into the gas tank when filling up at the work site while dust is still flying all over from cutting. It only takes enough dust to cover the outside of a tiny filter which is on the end of the rubber fuel line inside your gas tank and handle unit. You could empty it all out and shine a flashlight in the gas cap hole to see the filter surface but I would take it all apart and clean it and the tank. This maintenance will save you breaking the starter rope by cranking it too much.

Posted on Mar 26, 2011

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Posted on Jan 02, 2017

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1 Answer

My 1998 gmc snonma votec wont start it cranks and cranks and after about 20 mins it starts after that i can shout it off and it will fire back up fine then a day will go by and it dose the same thing


You have to check the fuel pump pressure to make sure it is supplying sufficient fuel pressure..Try turning the switch to on but do not start..now listen for the fuel pump to prime the system..it should run for 4-5 seconds the shut off..now try and start..if it is fully primed it should start...note although you are getting some gas dosent mean the pump is ok...sometimes it starts to go bad and then all at once it will let you down for good...have it checked out..good luck

Oct 22, 2014 | 1998 GMC Sonoma

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Fuel related if you can get it to fire with starting fluid.

May 12, 2013 | Mtd Garden

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91 isuzu pick up sat for 2 years and now wont start


I\'d try 2 things. One, some, or many, motors and fuel pumps, even electric ones, need to be "primed".
You might try to figure out how to suck the fuel from the tank up to the motor somehow.
I do not necessarily mean using your mouth.
You could also take a rag and an air hose, and GENTLY blow air into the gas tank to "prime" the system.
Another thing is, is there some part of the engine where gasoline could have congealed or turned to gummy deposits preventing the gas flow?
This is why they suggest mowers and generators be run until they run out of gas before storage, to prevent gummy deposits caused by evaporated gas.
Be blessed.

Apr 04, 2013 | 1989 Isuzu Pickup 2WD

1 Answer

My quantum xts 50 after priming wont fire


does it start when you prime it or does it not start at all? if you prime it and it runs until the prime burns off then won't start again, try priming it again. If it starts and runs until the prime burns off again then it is a carburetor issue. It isn't supplying the engine with fuel to run after the prime is gone

Jan 20, 2013 | Garden

1 Answer

Cant get my poulane pro 550 started


gas only lasts for 30 days in small engines try fresh gas if still have a problem take apart the carb and clean it out

Mar 24, 2012 | Garden

1 Answer

Engine starts when I hand prime it,but not when I use prime bulb.


There are two screws on the carb. 1 is Lo rpm air/fuel ratio and the other is hi rpm. Try adjusting the lo rpm screw counter-clockwize a 1/2 turn at first, more if needed. After each adjustment try to start. The other thing you could check is if the float is sticking in the bottom of the carb. which shuts off gas flow if full. There is a screw on the bottom of the carb to drain that float. You can try that also! Good luck man!

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1 Answer

I have a troy built self propelled mower, it ran great last season, now it will not stay running. I checked to see if it was getting fuel and it is. I primed it and it acts like it is going to run and then...


The jets in carbs are really small and clog easily. If you stored your mower with gas in it start by replacing the gas. Remove the air filter and prime the carb. Start the engine and place your fingers over the air intake on the carb. This will cause the engine to stall as it will be starved for air. It will also create a powerful suction on the jets and possibly dislodge a blockage. Prime the engine again and start. If does not continue to run, repeat the steps again. If after 3-4 tries your engine wont run you will have to remove the carb and clean the jets manually. The reason your engine runs for a short time is because it is burning the fuel that you put in there by priming it. After that the fuel comes through the jets in the carb and if these jets are clogged the engine will die.

Jun 06, 2009 | Troy Bilt 5.5hp Self Propelled Mower

1 Answer

Wont start


Start with emptying the gas tank totally. Refill with fresh gas/oil mix. Todays gasoline ain't that great.
Also after putting in fresh gas and priming if it doesn't fire at all pull the spark plug and if it is dry, pour a about a tbsp. of mix gas in the plug hole. put the spark plug back in and see if it will fire.

Phil

Dec 07, 2008 | Garden

1 Answer

6 yr old mower starts, won't run


sounds like a plugged high speed jet in carb - you can attempt to prime again , push at least 7-8 times - once it fires continue to push primer to keep running - it may clear out the carb if this doesnt work the carb will need to be removed and cleaned

Sep 27, 2008 | Garden

1 Answer

97 GMC Sonoma


checked fuses , #9 fuse for fuel pump was loose.

Jun 21, 2008 | 1997 GMC Sonoma

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