Lift the top cover away from the saw. 2. Remove the spark plug. Remove the spark plug boot. Use a spark plug wrench (or socket) to loosen the spark plug. Remove the spark plug from the cylinder. ADJUSTING THE GAP [top] 3. Adjust the gap on the new spark plug.
How do you change a spark plug on a craftsman chainsaw?
Lift the top cover away from the saw. 2. Remove the spark plug. Remove the spark plug boot. Use a spark plug wrench (or socket) to loosen the spark plug. Remove the spark plug from the cylinder. ADJUSTING THE GAP [top] 3. Adjust the gap on the new spark plug.
How do I replace the spark plug on a Poulan chainsaw?
This article provides step-by-step instructions for replacing the spark plug on a Poulan chainsaw. Let's get started. REMOVING THE SPARK PLUG 1. Remove the top cover. Remove the (3) screws securing the top cover to the saw. Lift the top cover away from the saw. 2. Remove the spark plug. Remove the spark plug boot. Use a spark plug wrench (or ...
How do I know if my Chainsaw needs a new plug?
If it’s not producing any sparks at all, your chainsaw needs a new plug. If there are only a few sparks coming out of one side of the electrodes but none on the other side, it’s not bad enough for you to worry about, but it will affect your performance.
How to check the ignition coil on a Stihl Chainsaw?
To check the ignition coil use and inline spark tester. Checking the spark plug requires the removal of the spark plug and examining the electrode end of the spark plug for carbon build-up or heat damage. Stihl Chainsaws are expertly engineered and tuned to specific specifications.
How do I know if my chainsaw needs new spark plugs?
If there are only a few sparks coming out of one side of the electrodes but none on the other side, it's not bad enough for you to worry about, but it will affect your performance. If the electrodes are worn down or damaged in any way that prevents them from making a spark, then they need replacing immediately.
Where does the spark plug go on a chainsaw?
0:011:11How To Replace The Spark Plug On Your Chainsaw - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd the air filter take the boot off of the top of the spark plug. Now use a large socket into theMoreAnd the air filter take the boot off of the top of the spark plug. Now use a large socket into the Sprint's to loosen the flow.
How often should you change a chainsaw spark plug?
A poorly functioning engine in a Stihl chainsaw can mean more work for the operator and can even be dangerous. Consequently, Stihl recommends replacing the spark plug after every 100 service hours.
How do you remove a spark plug from a Stihl chainsaw?
0:001:22How to Change a Spark Plug on a Stihl MS170 Chainsaw - YouTubeYouTubeStart of suggested clipEnd of suggested clipLook use the 19 mil hex socket spanner to loosen the spark plug. Once it's loose you can remove theMoreLook use the 19 mil hex socket spanner to loosen the spark plug. Once it's loose you can remove the spark plug by. Hand screw the new spark plug into the machine.
Do all chainsaws use the same spark plug?
No, all chainsaw spark plugs are not the same and can have key differences in spark plug gap, heat range, terminal caps, resistance modules, and spark plug seats. Each chainsaw model has specific spark plug requirements that need to be followed when replacing a spark plug.
How do I change a spark plug?
How to Change Spark PlugsSafety First. Park your vehicle on a flat, dry surface and ensure the engine is cool. ... Remove the Spark Plug Wire. ... Remove the Coil On Plug (COP) ... Unscrew the Spark Plug. ... Put in the New Spark Plugs. ... Re-install the Spark Plug Wires or Ignition Coils (COP) ... Start Up the Engine.
What happens if you don't change your spark plugs?
Spark plugs will depreciate over time, so various engine issues will arise if they are not replaced. When the spark plugs do not generate the adequate spark, the combustion of the air/fuel mixture becomes incomplete, leading to loss of engine power, and in the worst-case scenario, the engine will not run.
Is it easy to change spark plugs?
Introduction. Changing spark plugs takes about an hour (for a four-cylinder engine) and will save you at least a hundred bucks in labor if you do it yourself. In most cases it's a simple job that will help to maintain peak performance and the highest possible gas mileage.
Can you clean a spark plug with wd40?
WD-40 removes carbon residue and keeps moisture away from spark plugs and spark plug wires. WD stands for Water Displacement, so if your spark plugs are wet or you need to drive moisture away from ignition distributors, for example, WD-40 is a product you should have handy!
Do all Stihl chainsaws use the same spark plug?
For the best performance from your STIHL tool, we recommend that you always use the STIHL NGK spark plug. The spark plugs are listed in the “Technical data” chapter of your machine's Instruction Manual. For more information and to order your genuine STIHL spark plug, contact your local Approved STIHL dealer.
Where is the spark plug on a Stihl?
0:001:39How to Change a Spark Plug on a Stihl TS420 Disc Cutter - YouTubeYouTubeStart of suggested clipEnd of suggested clipFirst of all using the torque spanner and screw the screw located at the top of the machine next toMoreFirst of all using the torque spanner and screw the screw located at the top of the machine next to the starting button to remove the cover from the machine.
What size spark plug does a chainsaw take?
The NGK BPMR7A spark plug is the most popular 3/4 (19mm) used in Stihl chainsaws like the Stihl MS290, MS310, MS311, MS390 and MS391. The NGK CMR6H spark plug is the least popular 5/8 (16mm) spark plug used in Stihl chainsaws like the Stihl MS171, MS181, MS193, MS194, MS211, MS241, MS251, MS362.
Where's the spark plug on a Craftsman chainsaw?
0:223:07Spark Plug Location and Type for 18 inch 42cc Craftsman Chainsaw ...YouTubeStart of suggested clipEnd of suggested clipThe answer to the second part of your question is the spark plug is located under this black coverMoreThe answer to the second part of your question is the spark plug is located under this black cover and the cover is held on by three t25 Torx bolts and they are located here here.
Why will my chainsaw not start?
A spark plug might be defective and needs to be replaced. If your chainsaw has a defective spark plug, it cannot create an electrical current to ignite the system. Remove the spark plug and inspect if it is dirty, cracked, eroded, or damaged. There may also be a heavy carbon buildup or a burned-up electrode.
What spark plug goes in a Stihl chainsaw?
For the best performance from your STIHL tool, we recommend that you always use the STIHL NGK spark plug. The spark plugs are listed in the “Technical data” chapter of your machine's Instruction Manual.
How do you change a spark plug on a Husqvarna chainsaw?
0:412:07Changing the Spark Plug - Husqvarna Chainsaw - YouTubeYouTubeStart of suggested clipEnd of suggested clipWrench. Rethread the new spark plug back into the cylinder head and tighten with the wrench but beMoreWrench. Rethread the new spark plug back into the cylinder head and tighten with the wrench but be careful not to over-tighten. I reconnect the spark plug boot. And finally reattach the top.
What to use to clean spark plugs on chainsaw?
What to use for cleaning the spark plug on a chainsaw? You’ll need a screwdriver or an Allen wrench set (depending on what type of spark plug your saw has), WD-40 oil, two paper towels or rags, and a can of compressed air.
What happens if your chainsaw doesn't spark?
If it’s not producing any sparks at all, your chainsaw needs a new plug. If there are only a few sparks coming out of one side of the electrodes but none on the other side, it’s not bad enough for you to worry about, but it will affect your performance.
Why won't my chainsaw start?
When the plug is too old or worn out, the gap between the center electrode and the ground electrode becomes wider than normal. This prevents an electric current from flowing through the plug and as a result , your chainsaw won’t startup.
Why is my chainsaw not running?
If your chainsaw is not running properly, it could be due to a bad spark plug. This post will give you the steps on how to identify if yours is bad and what you can do about it.
Can chainsaws have a bad spark plug?
Most people who own chainsaws don’t realize that they can have a bad spark plug. It’s not something you think about until it starts to affect your performance, but when it does happen, you’re in for some frustrating days of trying to figure out what the problem is.
Can chainsaws be used for brush cutting?
Chainsaws can be a great tool for cutting wood and clearing brush. However, chainsaw owners should know how to properly maintain their tools in order to ensure that they will last as long as possible.
Can a chain saw spark plug be damaged?
A bad or damaged spark plug can cause the saw’s engine to stall out during use, which could lead to accidents that put you at risk of injury. The good news? Replacing a chain saw’s spark plug is an easy task with basic tools you might already have around your home.
How to remove a spark plug from a saw?
REMOVING THE SPARK PLUG [top] 1. Remove the top cover. Remove the (3) screws securing the top cover to the saw. Lift the top cover away from the saw. 2. Remove the spark plug. Remove the spark plug boot. Use a spark plug wrench (or socket) to loosen the spark plug. Remove the spark plug from the cylinder.
What happens if you use a wrong spark plug?
If the fuel mixture is too lean, or if the wrong spark plug is used, the ceramic insulator can be cracked .
What is gap in spark plug?
The "gap" is the distance between the ground electrode (metal strap) and the center electrode. This distance is measured (and adjusted) with a spark plug gapping tool. Adjustments are made by moving the strap closer to (or farther from) the center electrode.
Why do spark plugs wear?
The spark plug uses the electricity generated by the ignition coil to create a spark, which ignites the air-fuel mixture in the combustion chamber. The intense heat in the combustion chamber, along with the high voltage used for ignition , cause spark plugs to wear.
What Color Should A Chainsaw Spark Plug Be?
The color of a spark plug’s central and ground electrodes can tell you a lot about the health of your spark plug.
What Causes A Chainsaw Spark Plug To Go Bad?
When inspecting your chainsaw’s spark plug and you notice the central electrode is covered in a sooty substance, known as carbon, your chainsaw’s spark plug is fouled .
How Long Should A Chainsaw Spark Plug Last?
Chainsaw spark plugs can last for long periods of time depending on certain factors like fuel quality, chainsaw maintenance, and operator habits.
What Are The Symptoms Of A Bad Spark Plug In A Chainsaw?
When a spark plug is fouled or is in the process of fouling a chainsaw will exhibit some specific behaviors.
How does a Stihl chainsaw spark plug work?
Each time the engine flywheel completes a revolution, a magnet attached to it induces an electric current in a static magnet, and that current generates a spark across the plug's electrodes. The spark ignites the fuel/air mixture in the combustion chamber, and the explosion drives the piston and makes the engine work. If the plug's electrodes are too far apart or are covered with oil, carbon deposits or moisture, the spark is intermittent or weak, which causes incomplete combustion and poor engine performance.
How long does it take for a Stihl chainsaw to replace the plug?
Regardless of the condition of the plug after 100 hours of service, Stihl recommends replacing it with a fresh one. Use a resistor-type plug, and check the manual for your Stihl chainsaw model for recommended replacement plugs.
What to do if your chainsaw plug is black?
If the plug is coated with light brown deposits, and the gap is correct, you don't need to do anything to the plug -- just put it back, and the chainsaw should continue to run normally. If it's coated with black deposits or oil, you should remove them with an emery board or a small piece of 120-grit wet/dry sandpaper.
What is a spark plug?
The spark plug is an essential part of any internal combustion engine, providing the energy necessary to ignite the fuel. If it's corroded, fouled, worn or otherwise damaged, the engine either won't start or, if it does start, will operate poorly.
Why do plugs need replacing?
If the plug needs replacing because it is badly eroded, it may be because you're using gasoline with ethanol additive. Ethanol burns hotter than gasoline and can cause the engine to overheat, and one symptom of this is worn plug electrodes.
How do I know if my chainsaw spark plug is bad?
A bad spark plug is determined by removing the spark plug and examining the spark plug electrode end of the spark plug. If the spark plug electrode end is discolored, pitted, or caked in a dark substance called carbon the spark plug is fouled and will need to be replaced.
What Type of Spark Plug Does a Stihl Chainsaw Use?
The majority of Stihl chainsaws use the NGK BPMR7A (or equivalent cross-reference) spark plug. Some Stihl chainsaws such as the MS171, MS181, MS193, MS194, MS211, MS241, MS251, MS362, and MS462 use the NGK CMR6H (or equivalent cross-reference) spark plug.
What Spark Plug Does a Stihl MS170 Chainsaw Take?
Stihl MS170 chainsaws use the NGK BPMR7A spark plug or equivalent cross-reference. The wrench size needed to remove and install the NGK BPMR7A spark plug is 3/4″ (19mm).
What Is The Cross Reference for the NGK CMR6H Spark Plug?
What spark plug can be used in place of the NGK CMR6H Spark Plug in a Stihl Chainsaw?
Are spark plug wrenches Universal?
Spark plug wrenches are universal in the sense they are not chainsaw brand specific. However, the hex head of the spark plug needs to be matched to the size of the spark plug wrench. For example the NGK BPMR7A Spark Plug has a 3/4″ (19mm) hex head and needs a spark plug wrench with a 3/4″ (19mm) wrench to remove and install the spark plug.
