Question about Troy Bilt 5.5hp Self Propelled Mower

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My lawn mower doesn't start

My 7-year old VICTA 2-stroke lawn mower doesn't start. I cleaned the air filter, no luck, cleaned the plug, no luck, changed the plug, still does not start. Checked the
spark plug and it was soaked with petrol. Cleaned the new plug, and it still does not start.
When I pull the cord, it sounds like it wants to start but it just will not start up. Please note: I have not been using it for long time since it stopped working a while back. I now want to see whether I can get it working again.
Any one can shed some light on this?

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  • alfixya Dec 22, 2008

    This is quite technical... are you saying I remove the plug, with the wiring intact, then pull the cord to start the mower, in order to see whether there's spark on the plug ? Also, do I need to adjust the gap of the new plug ?

  • genelb Jan 19, 2009

    I have a Troy Bilt 6.75hp mower I have put new gas in it and a new air filter.I have also put in a new spark plug. When I pull the cord the mower sounds like it wants to start and smoke come out of the muffler. It will starin for 15-20 secinds and die never getting to full speed. I removed the spark plug and it was soak with gas.

  • Anonymous Mar 17, 2014

    starts when cold when I empty bag it will not start again, replaced coil, plug, cleaned carb, could it be carboureter fault?

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  • 211 Answers

Hi Every 2 stoke engine needs three things to run:Fuel+oil/air mixture in correct proportions,compression and ignition.Remove the sparkplug and see if the spark appears when the piston in the cilinder is at top death point(almoust),if not check the flyweel key(not to be sheared).Check engine"s sealing(crankcase gasket,cilinder gasket,seals-crankshaft,carb gasket).Also the mufller(not to be clogged),disassembly the carb (check and clean it),fuel lines and fuel filter (check and clean them),gas cap tank vent(not to be clogged),the air filter.Please let me know. best regards savumihai71

Posted on Dec 22, 2008

  • Savu Mihai Dec 22, 2008

    Hi

    A new sparkplug does not need to adjust the gap.Just buy the correct sparkplug(the same or echivalent as the old one).Now priming the engine(put some gas in the sparkplug hole,back the sparkplug and start the engine to see what is happening.Let me know.

    cheers savumihai71


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hunter19_46m
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SOURCE: I've inherited an older Victa 2 stroke 80 mower.

Hi anastasialou...

Sounds like you have dirt/debris in your carburetor jets,fuel passages or a diaphgram that is becoming non-flexible.
Be sure to check your fuel tank for water and dirt/debris, if there is water/debris then you need to clean your tank.
Also check you fuel line condition after a while they will degrade and need replacment.
Make sure you are getting spark at the spark plug, to do this:
Remove your spark plug and check to be sure you are getting fire at the spark plug.
You do this by grounding the plug on the head of the engine and pulling the crank rope, if you are getting spark then:
Check/Clean/Replace your fuel filter if you have one, normally they are located in the fuel tank of 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.
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.
Also make sure you are using fresh fuel...and oil mix if your using a two cycle mower or weedeater with the oil to the right mixture and not too much oil as it can cause hard starting.
If the mower/weedeater 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.
Sounds like you will need to clean the carburetor or replace your carburetor internal rubber parts like the diaphgram and O rings.
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.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
Sometimes you can get by with priming the carburetor or using 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.
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.
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 orginal position before you started.
Once you have your carburetor rebuilt that should solve your problem.
This is a FREE answer,Please take time to rate me

Posted on Jun 19, 2011

6ya6ya
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Posted on Jan 02, 2017

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