Showing posts with label chainsaw. Show all posts
Showing posts with label chainsaw. Show all posts

How to re-start a gas flooded chainsaw

Friday, September 18, 2020
how to re-start a flooded chainsaw

Tips to re-Start chainsaw flooded with gas

I first learned to use a chainsaw year ago at a Scout Jamboree. It was loose as, they basically said here you go, kid, chop up that log. I think I had ear muffs but definitely no safety gear. It was awesome but I did manage to stop the engine somehow and I would not restart it despite trying a lot.

Turns out my efforts to restart had meant I had flooded the engine with petrol and one of the 'experts' had to show me how to restart the saw. Turns out, flooded engines are a pretty common thing!

Tips on starting a flooded chainsaw


Before you begin your activity, it's always best to ensure you have fresh petrol in your engine. If you've got a mixture of oil and gas that's older than a month or two, it will be harder for your engine to re-start.

If you have tried several times unsuccessfully to start your unit, it is most likely flooded with petrol. A key tell is that you can smell gas. 

'Flooded' means excessive fuel has been pumped into the engine (when you pulled the starter chord), the volume of which has prevented and displaced oxygen which is crucial for igniting the fuel. 

The best advice is that you should not prime the engine again as you will add to the problem! 

You may have pulled the start chord a few times and let the choke out with no luck. You may think priming the engine would be a good idea - but it's not, you are simply adding more fuel where it is not needed

Two methods you can try to clear the chainsaw of the excess fuel 


The first is the easiest and most common method.

You need to be patient and let your chainsaw sit idle for at least 15-20 minutes to allow the excess fuel to evaporate from the engine.

Maybe go make a cup of hop tea while you wait or check out some Darth Vader quotes.

Once you've done that, you can not attempt to restart your engine in the normal manner.

This method will work best with a mildly flooded engine and the same principle applies to re-starting a lawn mower as well.

The harder hands-on method to re-start a flooded chainsaw:

  • Make sure the chain break is 'on'. Safety people!
  • Turn the choke to 'off' position.
  • Activate the 'fast idle' (do this by engaging the throttle lock/trigger assembly or pulling the choke out and pushing it back in)
  • Turn the on/off switch to 'on'.
  • Hold the saw firmly on the ground as you do during normal starting, and pull the starter chord sharply until the saw starts. Do not pull the starter rope out to its full length. Employ short, brisk pulls in a continuous fashion.
If the engine does not start within 15 pulls then the spark plug may have become 'wet fouled'. If you suspect this has occurred, remove the spark plug and look for moist wet deposits on the electrode. 

Remove with a dry cloth. 

While the plug is out, here's your chance to remove any fuel in the engine via the spark plug hole. 

Here's an excellent video tutorial lesson on starting your saw:

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