20 Most Recent Stihl Genuine 4229 007 1000 Vacuum Attachment - Page 4 Questions & Answers

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On the top, right in the middle.

Set the gap between coil and flywheel to 0.010 inches, if possible disconnect the stop wire from coil to eliminate that part of the circuit. If spark, reconnect stop wire and check again with stop switch in the on position, should still have spark. If not there is a short in the stop circuit.

According to Stihl's engine service manuals, when the engine has no spark or a dramatic, sudden loss in power, the problem could lie in the ignition system. The ignition system ignites the fuel in the engine for proper combustion. When the spark isn't firing correctly, an influx of gas can bog the engine down or cause it to not start at all. Since you are dealing with potentially lethal high voltage, extreme caution is advised and safety gear should be worn at all times. first Slide the rubber spark plug connector off of the spark plug. On most Stihl's this can be accessed from the top of the engine, underneath the chain brake handle. Unscrew the air filter cover and remove it, if you can't see it on top of the engine then Insert the socket wrench onto the spark plug and remove it from the engine. Discard the old spark plug and replace it with a new, identical spark plug, which will be recommended in your operator's manual. Make sure the spark plug is gapped according to your manual's specifications or else the engine won't start. after that Turn the ignition switch to the "On" position. Insert the spark plug into the rubber connector. Make sure the chain brake is disengaged by pulling back on the black chain brake handle, which runs atop the saw's engine. Hold the rubber plug and spark plug, with gloved hands, about 1 to 2 centimeters from a metal point on the engine block. Wipe any flammable gas or oil from the metal spot on the engine with the rag. Tug on the starter cord and look for a blue spark across the "hex" part of the spark plug,Check to be sure the wires leading to the "On-Off" switch aren't tangled or touching a metal point on the engine if there is no spark, Replace any wires if they are damaged or corroded

Check the ground wire on your coil and see if it is loose or well grounded...

80 MLS of 2 stroke oil to one gallon of fuel and it doesn't matter what octane, of course the higher octane is better cause it burns cleaner. To much oil will gum up your carburetor and engine.

From what the ads say, ONLY a Stihl approved dealer will work on them and/or sell parts.

The ignition works off speed of rotation, so you need to crank the engine well withe the spark plug grounded, if there is still no spark, then the new coil is either incorrect for the model, or is faulty, also make sure the earth cut out wire on the unit is dissconected, to rule out a faulty switch or wire.

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It is quite unusual for them to exude fuel from the carb, if somebody has removed the carb at some time it is possible they have re connected the fuel hoses incorrectly, it is important to remember that the fuel bubble is a purge not a primer, so it pulls full from the carb into the bulb and back to tank, if the hoses are incorrectly assembled you can push fuel into the carb, this would cause fuel to exude from the carb.

My Stihl won't start unless you have the choke on even though the engine is hot

You seem to have done everything, you need to make sure you have a 0.3mm gap between the coil and the flywheel magnets, you also need to give the starter a good pull when checking for a spark, if all this fails then the new unit is bad, is it a genuine Stihl part? if its a cheap Chinese copy then it will not be a good quality item.

sounds like you are missing a return spring for the throttle. or broken

slide hammer with a bearing attachment

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cheap string or your trimming against a chain link fence or something sharp.

spark plug, air filter, fuel filter, and clean the spark arrestor

coil may be overheating. an engine will get hotter for about 10 minutes after it is shut off because the cooling fins on the flywheel aren't cooling it anymore

should say in the manual. or go to stihl.com

crank seals may be bad. or flywheel key is sheared