Experienced gardeners share their insights in answering this question :
My son flooded out my stihl weedeater, I took it had a new filter put in and it started right up. he went to use it again and now it wont start! It sat overnight and i still can start it! Any suggestions please

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

A clogged fuel filter is most commonly caused by leaving fuel in the string trimmer for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the fuel filter and prevent the engine from starting.
A spark arrestor is a mesh screen designed to prevent anything that expels flame or sparks (i.e., an internal combustion engine) from starting fires.
An almost totally blocked spark arrestor screen on a two-stroke, air-cooled engine can cause the engine to overheat. The result is that the piston expands into the exhaust port and the engine seizes. The piston scored because the engine was unable to dissipate heat fast enough.
What`s more, HD2 air filters can be easily cleaned and reused multiple times: just spray the removed filter with STIHL Varioclean, leave the detergent to take effect briefly, then rinse and dry the air filter before reinstalling it.
Checking the Fuel Mix

The most common problem with a strimmer not starting is that there`s a problem with the fuel mix. Double check that you`ve used 40 parts fresh unleaded petrol to 1 part 2-stroke oil (40:1). Check the petrol you`ve used isn`t stale.

If your STIHL chainsaw is going to have a problem, it`s likely to be with a worn carburetor, bad spark plugs, loose fuel hoses, or clogged fuel lines. You should also inspect the fuel intake system and ensure that there are no compression issues.
Carbon build up could be caused from several things. The spark arrestor screen can plug within only 4-6 tanks of fuel if: – Fuel that is more than 30 days old which may contain varnish. – Poor quality 2-stroke oil or oil that does not meet theISO-L-EGD and JASO M345 FC/FD standards was used.
A spark arrester is a mechanical device that traps or destroys hot exhaust particles expelled from an internal combustion engine.
The Chemical Safety Board (CSB) Recommends:

Flame arresters require regular inspection and maintenance (cleaning) to maintain functionality.

Over time, the spark arrestor can become clogged with soot. If the spark arrestor is clogged, the engine may stall. To unclog the spark arrestor, remove it and clean it with a wire brush. You may also replace the spark arrestor.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

I need a spark plug gap
ANSWER : 0.5mm or .02″

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What should the spark plug gap be on a weedeater trimmer 25cc
ANSWER : Set it at .025

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<!– from fixya rte –>Spark plug gap setting poulan pro 033. – Poulan Pro Prod/Poulan Weedeater Poulan Pro PP5020AV 20" Gas Chain Saw
ANSWER : .025″ plug gap

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Stihl HS 80 stops after a while
ANSWER : Check the fuel tank vent, it could be creating a vaccum in the fuel tank which is stopping the carb from drawing up the fuel. Then you’re having to wait till the pressure in the fuel tank equalises again.

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Stijl brush cutter spark plug gap
ANSWER : Buy a new sparkplug

dont bother with the gap
if it wont run its usually fuel related
prob a leef in the tank or a blocked filter or carborator jet

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I need the spark plug gap for an Ariens ST624E. the spark plug = 21533500
ANSWER : The recommended setting is .030″

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Timming pull string is hard to pull wont start. i replaced the rings
ANSWER : Take out the spark plug and try turning it over

sounds like too much oil inside it
can cause compression issues
drain clean the oil
you can tell lots with no plug in
could be anything in the transmission to the trimming head
perhaps the clutch is seized up

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Free stihl manuals
ANSWER : .02″ 0.5mm

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