Question about Craftsman 675 Series 190cc 22" Briggs Stratton Rear Bag Front Propelled Lawn Mower ()

1 Answer

Won't start The weedtrimmer set up for about 8 months. I poured the old gas out and re=filled with fresh. I started it fine then used it for a few minutes. Killed the engine an d put it back in the shed planning on more extensive use on the weekend. I got it out and it will not start, PERIOD. I checked the spark plug wire, put fresh fuel in it again, cleaned the air filter and it still will not start. Thoughts?

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  • Craftsman Master
  • 7,482 Answers

Hi Billy
Once you poured new gas into the tank, you may have lossened some debris and it is now in the carb jets.
Sounds like you have dirt/debris in your caburetor jets,fuel passages or a diaphgram that is becoming non-flexible.
Check/Clean/Replace your Air Filter, a dirty air filter can make your engine run to rich with fuel.
Also be sure to check and clean your spark arrestor in the exaust,if you have one installed on your engine.
Note: ALWAYS USE COMPRESSED AIR TO CLEAN YOUR JETS AND PASSAGES, VERY IMPORTANT.
Note:Before you disassemble the carburetor:
Write down on a piece of paper or take a picture of how the linkage attaches to your carburetor for later reference when you go to reinstall your carburetor.
Mark each piece with a awl, or some kind of instrument that will make an alignment scratch before you disassemble the carburetor into separate pieces.
That way you will know which way it goes back together when you reassemble it.
Sometimes you can get by with priming the carburetor or by using a very small shot of starting fluid and letting it run a few times like that, and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.
Be sure to check your fuel tank for water and dirt/debris, if there is water/debris then you need to clean your tank.
Check you fuel line condition after a while they will degrade and need replacment.
Check/Clean/Replace your fuel filter if you have one, normally they are located in the fuel tank of chainsaws and weedeaters.
When you remove your fuel lines from the carburetor be sure to make a drawing to how the lines are connected to the carburetor or take a pictue for later reference.
Normally the big line will be the line the fuel filter is connected to inside of the tank.The smaller of the two lines is the return to the fuel tank from the carburetor after it is pumped thru the carburetor by the primer bulb.
Make sure you are using fresh fuel...and oil if your using a two cycle chainsaw or weedeater with the oil to the right mixture...too much oil as it can cause hard starting and excessive smoking.
If the chainsaw/trimmer is over a couple of years old, then I recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.
The diaphgram may look good and flexible, but it can be deceiving and not act as a fuel pump as it should because it has become too hard and will cause hard starting,start and run and shut off, etc.
When you clean your carburetor, I recommend that you use a laquer thinner type cleaner to clean and dissolve the laquer build-up in the float and needle jet passages.
Be sure to remove all plastic and rubber parts before using the laquer thinner because it can dissolve the plastic parts and render them unuseable.
Be sure to use COMPRESSED AIR to blow out all the fuel and air passages.The higher air pressure is needed to blow some of the trash/debris from the fuel or air passages.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
Keep in mind that the float (if you have one) for the carburetor must be level when you go to reassemble the carburetor or follow the instructions you get with the carburetor kit, or you could also ask the parts man that you get your kit from.
When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.
But before you lightly seat the jet screws count the number of turns it takes to seat the jet screws from their original position.
Be sure to mark the turns down on a piece of paper.
That way when you put the jets back in, you know to lightly seat them first and then turn them back out to their original position before you started.
Note:
The little spring inside of the carburetor goes under the float arm.
That is where your fuel inlet needle/float valve is located...on the arm at the end.
Normally there is a small indention in the carburetor base and a small protrusion on the underneath of the float arm where the spring will be in the right postion for installation.
The spring will set in the indention and you will install the float arm with the needle/float valve and float rod into position over top of the spring,you will push down until it is in position and then you can tighten the screw that holds the float arm assembly in position.
Once you have your carburetor cleaned/rebuilt that should solve your problem.
Please take time to rate me
Bud

Posted on Apr 25, 2013

  • Billy Moore Apr 25, 2013

    Thanks Bud....this will certainly get me started on a "weekend" project..Billy M.

  • Billy Moore Apr 25, 2013

    Bud...I don't see a way to "rate" your help and solution? Billy M.

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a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
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wadingriver
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SOURCE: not getting any spark

Clean the Plug and replace the Seafoam gas with fresh. Althiough the Seafoam is a cleaning agent, it cuts back on the gasolines octane and it can slightly foul plugs.

Posted on Aug 08, 2012

hunter19_46m
  • 7482 Answers

SOURCE: mower will not start

Sounds like you will need to clean your carburetor.
Sometimes you can get by with priming it a few times, and letting it
run a few times like that and it will flush the gunk out of the jets,
but most of the time you will need to rebuild the carburetor.
If the mower is over a couple years old, then I also recommend that you
buy and install a new carburetor repair kit, because the diaphragm will
get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, count the
number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns
they were in/out.
Please do not forget to rate me, Thanks
Good Luck, I hope this helped

Posted on May 26, 2010

SOURCE: old craftsman pull cord

Your carbs main jet is blocked most likely.

Take the carb bowl off and look at the bolt near the top of the threads.
You should see a very very small hole. If you can see through it you need to clean it with a fine strand of metal wire.

Also work the float up and down to make sure it isnt stuck or unable to flow when the float hangs free.

Put it back together and try it out!

Good luck and be careful!

Posted on Aug 03, 2010

daneinwv
  • 124 Answers

SOURCE: I have a Craftsman 625

Hello,
My name is Dane and I am going to try to help you solve your problem.

I believe that you have clogged jets/passages inside of your carburetor. This can happen when an engine gets little use, allowing the fuel in the system to get old and begin breaking down. If fuel is left in a Carb for more than a year, it can eventually turn into a jelly like consistency, and clog the fuel system. What I believe is happening in your case is that the float needle inside the Carb is not allowing gas to enter the carb fast enough to keep up with demand. That's why it will run for 10 minutes and then shut down. After it sits for a while, the float bowl slowly fills back up and it will run for 10 more minutes.

Now for the bad news. This is an extremely difficult carb to work on. It is all I can do to get these Carbs off an engine and back on again to clean them. They are tough because you have a big air filter housing and 2 long bolts with gaskets and then the carb itself and spacers, that you have to hold together as a unit and start the bolts holding the carb to the engine. If you are a good enough mechanic to do this, you will already know how to do it. If not, I honestly suggest you take it to a shop and let them clean it for you. A new Carb isn't all that expensive, so you may want to consider just letting them replace it instead of cleaning.

I hope I've helped. If you found this information useful, please leave feedback as deserved. Thank you! Dane

Posted on Dec 04, 2010

marc_uhrey
  • 72 Answers

SOURCE: engine won't start oil level is good has fuel

Remove the spark plug and attach the plug wire to the top of the plug. Place the base of the spark plug against a metal part of the engine and pull the starter cord. You should see sparking between the plug electrodes. It helps to do it in a dark area, not out in the sun.

If there is no spark, something may be shorted out, a wire broken, or the magneto has come apart, etc.

If there is spark, then the problem is fuel related. The gas may not be getting to the carburetor, or the air / fuel ratio is wrong, not allowing combustion.

You have to eliminate each of the possibilities one by one. I would recommend buying a can of starting fluid, which you can get at parts stores, Walmart, Target, Shopko, etc. Spray a little in the carburetor or directly into the spark plug hole. Replace the plug and if it acts like it is starting, then dies, you know you have good spark and the problem is with the fuel or carburation. If the machine has sat for a long time with stale gas in the carburetor, it gets gummed up and will not start. The carburetor will have to be removed and cleaned.

Good luck!

Posted on Jul 14, 2011

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