UNDERSTANDING
2-STROKE ENGINES

* VISUALLY EXPLAINED by Craig Kirkman, a renowned you tube educator of these systems. So if you are experiencing problems such as your Chainsaw Wont Start, or any other conventional Two Stroke Engine for that matter, or you just want in increase your knowledge, then this channel will certainly help you along the way! This uniquely explained video shows you the basics of how a two stroke carburetor fueling system functions. A vital tool in your toolbox is knowledge. Without knowledge, nobody can fix anything. All 2-Stroke Carb Episodes: https://www.youtube.com/playlist?list=PLrlXp3PlwgRI5OLvm3P91LJr1CYnO5TRD For some FREE Printable Download help Leaflets: https://www.therepairspecialistonline.com/ These downloads are from my very own website and are absolutely Free. They consist of just a few help topics so far but I am continually making more of these Free Downloads. The best of them is that they are printable so you can take them into the workshop with you and study them at you own pace. Images in this video are Created and Copyrighted to Craig Kirkman of The Repair Specialist Channel and 'no' reproduction of this content is granted. * I Make these adjustments on an actual Chainsaw here: https://www.youtube.com/watch?v=74p9FLmIkkw&t=58s * I Correct Chainsaw Running Problems using the Fuel Screw Adjustment: https://www.youtube.com/watch?v=Eo6iUTjcQ8Q&t=32s * My Chainsaw Carburetor | How it Functions: https://www.youtube.com/watch?v=kTly4BYvauM&t=90s * Un tangle your Chainsaw Chain easily | I show you here: https://www.youtube.com/watch?v=lpiyqSVSeu4 * Buying a Used Chainsaw | My advice: https://www.youtube.com/watch?v=jW66xLmNLxc * Got your Carburetor Fuel Screws Mixed Up? I show you some remedies: https://www.youtube.com/watch?v=L8smASBVupc * How Fuel Flows through the Chainsaw Carburetor: https://www.youtube.com/watch?v=NNYEsmtB_X8 * Limp Starter Cord on your Chainsaw? Here's why with solutions: https://www.youtube.com/watch?v=xIUeov9IFtA&t=171s * How to Tension a Chainsaw Chain Correctly: https://www.youtube.com/watch?v=V9RUt22UNEY&t=145s * How to order the Correct Chainsaw Chain Every time. I show you: https://www.youtube.com/watch?v=0JUrdd_ZNxs * How to Un-Flood your Chainsaw Quickly, with and without tools: https://www.youtube.com/watch?v=U9BURjo005U&t=120s * Chainsaw damage caused by Dirt in Fuel: https://www.youtube.com/watch?v=MBhINTKRUQk&t=6s * 2 Stroke fuel mix for engine longevity: https://www.youtube.com/watch?v=wDpVc15znJs&t=26s How a Chainsaw Engine and Carburetor work together: https://www.youtube.com/watch?v=XPgaF-JBwco * Good Maintenance | How to Clean a Chainsaw: https://www.youtube.com/watch?v=YhvcvXUkwqI * Storing a Chainsaw | Good Practice: https://www.youtube.com/watch?v=CiJFACoH0rA&t=24s * How an Ultrasonic Cleaner actually cleans your carburetor: https://www.youtube.com/watch?v=M8F_jLhEJIQ&t=24s Please Note: This unique video explains the very basic principle of how Two-Stroke Carburetor Fuel Adjuster Screws work, and how to adjust them. The way in which the carburetor actually achieves this amazing process is much more complex. Because of this I have had to explain this process in a very basic way to make it easy to understand by the majority of viewers who have had no prior experience or knowledge of these types of carburettor workings. So the information in this video is not exact in the way that these carburetors actually work and regulate the fuel. The diagrams and explanations in this video are for illustrational purposes only, and there is NO guarantee that all process shown are 100% accurate. To master carburetor repair and diagnosis, one must first know how an carburetors work. This video explains the basis of how two-stroke fuel screws work to enable the two stroke engine to function optimally. TIMESTAMP: 01:27 - Diagram explaining the Two Stroke Carburetor High Screw and Low Screw 02:00 - Showing the Two Stroke Carburetor Fuel Adjustment Screw Settings positioning to begin 02:27 - Where to set the Two Stroke Carburettor Adjustment Screws 'explained' 02:58 - How to position and set the Two Stroke Carburetor Idling Screw ('tick-over' screw) 'explained' 03:29 - How a Two Stroke Carburetor works and how the fuel adjustment screws work 04:34 - What is a Two Stroke Carburetor running Rich and Lean? Answered 05:01 - Carburetors 'H' screw adjusted out too much. Effects on the Engine 06:18 - Correct setting for the carburetors 'H' Screw. Effects in the Engine 07:00 - Carburetor 'H' screw adjusted in too much. Effects on the Engine 09:55 - Carburetor 'L' screw adjustment settings explained. 10:51 - carburetor 'L' screw adjusted out. Effects on the Engine I hope you find this video useful, and I really hope you enjoy it. Many thanks indeed Craig Kirkman (Owner and Creator of The Repair Specialist Channel and its Copyrighted diagrammatic content)

* VISUALLY EXPLAINED by Craig Kirkman, a renowned you tube educator of these systems. Very few people know this, but there is a very special Pump inside your Chainsaw Carburetor, and any malfunction of the pump and can cause a whole host of problems (bog, incorrect running and starting issues, to name just some). Powered by the fuel pump diaphragm, this pump is the heart of the 2 stroke chainsaw carburetor. This unique video show you the working of a Chainsaw Carburetor with real chainsaw sound effects. This will give you a better understanding of what is going on inside the chainsaw when you hear specific tones from the chainsaws engine. All 2-Stroke Carb Episodes Here: https://www.youtube.com/playlist?list=PLrlXp3PlwgRI5OLvm3P91LJr1CYnO5TRD For some FREE Printable Download help Leaflet on this topic: https://www.therepairspecialistonline.com/ These downloads are from my very own website and are absolutely Free. They consist of just a few help topics so far but I am continually making more of these Free Downloads. The best of them is that they are printable so you can take them into the workshop with you and study them at you own pace. You will also gain some useful tips on how to Tune a Chainsaw Carburetor. Anyone who has tried this for the first time can tell you that it's quite a daunting task. So the better you understanding, the less daunting and more enlightening it will become. So whether your chainsaw wont start or you just want to know how to tune a 2 stroke carburetor this video will help with that. How to tune a chainsaw video here: https://www.youtube.com/watch?v=74p9F... TIMELINE: 00:55 - How the Chainsaw Throttle Works 01:12 - H Tuning Adjuster Screw | How it works 01:14 - How to make a Chainsaw Carburetor Fuel/Air mix Rich 01:29 - How to make a Chainsaw Carburetor Fuel/Air mix Lean 01:30 - Chainsaw engine revving too high | Why? 01:50 - Why 'over revving' can damage your Chainsaw 02:22 - How to tune a Chainsaw Fuel/Air mix for idling 02:26 - How the 'L' (low) screw works 02:30 - What causes lumpy un-even idling on a Chainsaw 02:49 - Lumpy un-even idling | How to correct it 03:04 - Adjusting the 'L' Screw in too far | What happens? 03:44 - How to Adjust Chainsaw Idling Speed Anyone who has experience tuning chainsaws knows, whether it be a Stihl chainsaw, a Homelite chainsaw, Poulan, McCulloch, Jonesered or husqvarna chainsaw, that there are so many different types of adjustment screw heads on all of the different brands available. Some have screw driver heads and others have specialist tool requirements. Here I have included a great adjustment kit on Amazon, which will fit most chainsaws: https://amzn.to/39EbJg0 Thank you for viewing this video where i show you how I personally tune a chainsaw. Thus will help get your chainsaw running well again and prevent chainsaw "BOG" or "BOG Down" as some describe it. Please take this advice as demonstration purposes only. It is your very own decision whether or not to take this advice and any undertaking relating to this video, by you, must be done so in the correct safe manor as dictated by your safety user manual. Do not undertake any of the procedures shown in this video unless you are sure of your own safety as described by your safety manual. Although this video is focused on running Chainsaw running problems that can be rectified by adjusting the carburetor fuel adjuster screws, it can apply to mostly any 2 Stroke engine. That's because the two stroke engine fitted to most small garden machines are pretty much the same principally. Thank you Craig Kirkman, The Repair Specialist, on chainsaw carburetor adjustment Please visit our website: https://www.therepairspecialistonline.com/ Please check out my amazon shop. I have recommended some useful items from Amazon below. I guarantee you that these items are the sorts of things I use on a daily basis so I know they are good. I have to be careful in recommending products because I have my name and credibility at stake. So I will only recommend good products. https://www.amazon.co.uk/shop/therepairspecialist

* VISUALLY EXPLAINED by Craig Kirkman, a renowned you tube educator of these systems. Very few people know this, but there is a very special Pump inside your Chainsaw Carburetor, and any malfunction of the pump and can cause a whole host of problems (bog, incorrect running and starting issues, to name just some). Powered by the fuel pump diaphragm, this pump is the heart of the 2 stroke chainsaw carburetor. My Chainsaw was Bogging down when throttled and not Idling correctly. I Easily adjusted my Carburetor without any cost. You can to. HERE'S HOW I DID IT. All 2-Stroke Carb Episodes Here: https://www.youtube.com/playlist?list=PLrlXp3PlwgRI5OLvm3P91LJr1CYnO5TRD Having Chainsaw running or starting issues? In this very quick and 'to the point' video I show you how to adjust your chainsaw to correct this. For some FREE Printable Download help Leaflets: https://www.therepairspecialistonline.com/ These downloads are from my very own website and are absolutely Free. They consist of just a few help topics so far but I am continually making more of these Free Downloads. The best of them is that they are printable so you can take them into the workshop with you and study them at you own pace. Here I have some useful information for you if you need to tune the carburetor on your chainsaw. Anyone who has tried this for the first time can tell you that it's quite a daunting task. If you have tried this yourself I'm sure you will have thought, where are the adjustment screws exactly? Even if you know where they are you might then wonder, which screw do I adjust? If you know which screws to adjust then, which screw first? How much to I adjust them? Do I turn them inwards (clockwise) or outwards (anticlockwise). After trying to adjust these without any experience it can result in complete frustration. What I hear a lot is "my chainsaw wont start" How to tune a chainsaw: https://www.youtube.com/watch?v=74p9FLmIkkw&t=31s Key moments: 00:19 - Chainsaw Engine Bog down | How to correct it 00:46 - Engine Smoking Excessive and Wont Rev up | How to correct it 01:12 - Engine wont Rev up and will Stop when Idling | How to correct it 01:37 - Engine running un-even when Idling and Excessive smoke | How to correct it 02:04 - Chain turning when Idling | How to correct it Well, this easy to follow video will explain what you need to do. Anyone who has experience tuning chainsaws knows, whether it be a Stihl chainsaw, a Homelite chainsaw, Poulan, McCulloch, Jonesered or husqvarna chainsaw, that there are so many different types of adjustment screw heads on all of the different brands available. Some have screw driver heads and others have specialist tool requirements. Here I have included a great adjustment kit on Amazon, which will fit most chainsaws: https://amzn.to/39EbJg0 Thank you for viewing this video where i show you how I personally tune a chainsaw. Thus will help get your chainsaw running well again and prevent chainsaw "BOG" or "BOG Down" as some describe it. Some Chainsaw adjustments don't have the conventional screw driver shaped slots on the adjustment screws. Instead, they have splines and pack-man shaped adjustments and many more. Please take this advice as demonstration purposes only. It is your very own decision whether or not to take this advice and any undertaking relating to this video, by you, must be done so in the correct safe manor as dictated by your safety user manual. Do not undertake any of the procedures shown in this video unless you are sure of your own safety as described by your safety manual. Although this video is focused on running Chainsaw running problems that can be rectified by adjusting the carburetor fuel adjuster screws, it can apply to mostly any 2 Stroke engine. That's because the two stroke engine fitted to most small garden machines are pretty much the same principally. Thank you Craig Kirkman, The Repair Specialist, on chainsaw carburetor adjustment Please visit our website: https://www.therepairspecialistonline.com/ Please check out my amazon shop. I have recommended some useful items from Amazon below. I guarantee you that these items are the sorts of things I use on a daily basis so I know they are good. I have to be careful in recommending products because I have my name and credibility at stake. So I will only recommend good products. https://www.amazon.co.uk/shop/therepairspecialist

* VISUALLY EXPLAINED by Craig Kirkman, a renowned you tube educator of these systems. Very few people know this, but there is a very special Pump inside your Chainsaw Carburetor, and any malfunction of the pump and can cause a whole host of problems (bog, incorrect running and starting issues, to name just some). Powered by the fuel pump diaphragm, this pump is the heart of the 2 stroke chainsaw carburetor. This video effortlessly guides you through the gasoline fuel flow through the Two-Stroke Carburetor. To master carburetor repair and diagnosis, one must first know how a Carburettor works. All 2-Stroke Carb Episodes Here: https://www.youtube.com/playlist?list=PLrlXp3PlwgRI5OLvm3P91LJr1CYnO5TRD For some FREE Printable Download help Leaflets: https://www.therepairspecialistonline.com/ These downloads are from my very own website and are absolutely Free. They consist of just a few help topics so far but I am continually making more of these Free Downloads. The best of them is that they are printable so you can take them into the workshop with you and study them at you own pace. TIMESTAMP: 00:35 - Fuel Pump Diaphragm Location in the Two Stroke Carburetor 01:00 - Fuel Pump Reservoir Location in the Two Stroke Carburetor 01:30 - Fuel Pump Valving System on a Two Stroke Carburetor 02:04 - Fuel Screen Filter Location 02:10 - Role of the Fuel Pump Gasket in a Two Stroke Carburetor 02:25 - Full Fuel Flow through the Carburetor the 2 Stroke Carburetor 03:15 - Metering Needle and Lever Location 03:26 - Fuel Pump Diaphragm Location and Function 03:38 - How the Metering System works on a Two Stroke Carburetor 06:33 - How the Fuel Air Mixture Adjuster Screws work 07:43 - How a Primer Bulb works on a Two Stroke Carburetor 09:01 - A Personal Thank you from Craig Kirkman HOW TO TUNE A CHAINSAW: https://www.youtube.com/watch?v=74p9F... HOW TO UN-FLOOD YOUR CHAINSAW: https://www.youtube.com/watch?v=nFum1... QUALITY 2-STROKE OIL: https://www.amazon.co.uk/gp/product/B... QUALITY CARBURETOR CLEANING SPRAY: https://www.amazon.co.uk/gp/product/B... Why know these basic fundamentals of the 2-stroke carburettor? Well, lets put that into perspective. When you take your car in to the garage for repair work who do you want to be repairing it? A mechanic of course, but exactly what type? With what background? What experience? What qualifications? Well, the chances are that you will want your mechanic to have both work experience behind them as well as college classroom training where they have gained the fundamentals. Basically, you want them to know your engine inside out! So then, you know the importance of the type of theoretical knowledge explained in this video. The basics in this video will go a long way to educating yourself on the basic principles of both the four stroke engine and the 2 stroke engine. Whether you can't start your lawnmower, your chainsaw wont start, your enduro bike needs diagnostic checks, your two stroke engine in general, and so on, you will find it much easier to tackle these issues if you have a basic fundamental knowledge of how engines work. This is a chance to sit back and learn your first steps towards mechanics and engineering. Many thanks indeed Craig Kirkman (Owner and creator of The Repair Specialist channel and copyrighted diagrammatic content) Please check out my amazon shop. I have recommended some useful items from Amazon below. I guarantee you that these items are the sorts of things I use on a daily basis so I know they are good. I have to be careful in recommending products because I have my name and credibility at stake. So I will only recommend good products. https://www.amazon.co.uk/shop/therepairspecialist

* VISUALLY EXPLAINED by Craig Kirkman, a renowned you tube educator of these systems. Very few people know this, but there is a very special Pump inside your Chainsaw Carburetor, and any malfunction of the pump and can cause a whole host of problems (bog, incorrect running and starting issues, to name just some). Powered by the fuel pump diaphragm, this pump is the heart of the 2 stroke chainsaw carburetor. In this unique video, learn about how this type of Two-Stroke Carburetor Main-Jet works. These types of main jet can in many types of small engines such as a Chainsaw, Hedge Trimmer, Brush-cutter, Small Quad Bike, Scooter and Mini Pocket Bike. To master carburetor repair and diagnosis, one must know how a carburetor works. All 2-Stroke Carb Episodes Here: https://www.youtube.com/playlist?list=PLrlXp3PlwgRI5OLvm3P91LJr1CYnO5TRD For some FREE Printable Download help Leaflets: https://www.therepairspecialistonline.com/ Diagrams in this video are Copyrighted to Craig Kirkman of The Repair Specialist! * Why does a 2 Stroke Engine only run on Choke? https://www.youtube.com/watch?v=6Un97-8JRHg * Two Stroke - Four Stroke Engine Comparison: https://www.youtube.com/watch?v=ZjadL2Iit_I&t=509s How does an Emulsion Tube work? What is it's purpose? : https://www.youtube.com/watch?v=IGPg51AtIEE&t=125s * I Correct Chainsaw Running Problems using the Fuel Screw Adjustment: https://www.youtube.com/watch?v=Eo6iUTjcQ8Q&t=32s * Chainsaw Carburetor | How it Functions: https://www.youtube.com/watch?v=kTly4BYvauM&t=90s * Un tangle your Chainsaw Chain easily | I show you here: https://www.youtube.com/watch?v=lpiyqSVSeu4 * Buying a Used Chainsaw | My advice: https://www.youtube.com/watch?v=jW66xLmNLxc * Got your Carburetor Fuel Screws Mixed Up? I show you some remedies: https://www.youtube.com/watch?v=L8smASBVupc * How Fuel Flows through the Chainsaw Carburetor: https://www.youtube.com/watch?v=NNYEsmtB_X8 * Limp Starter Cord on your Chainsaw? Here's why with solutions: https://www.youtube.com/watch?v=xIUeov9IFtA&t=171s * How to Tension a Chainsaw Chain Correctly: https://www.youtube.com/watch?v=V9RUt22UNEY&t=145s * How to order the Correct Chainsaw Chain Every time. I show you: https://www.youtube.com/watch?v=0JUrdd_ZNxs * How to Un-Flood your Chainsaw Quickly, with and without tools: https://www.youtube.com/watch?v=U9BURjo005U&t=120s * Chainsaw damage caused by Dirt in Fuel: https://www.youtube.com/watch?v=MBhINTKRUQk&t=6s * 2 Stroke fuel mix for engine longevity: https://www.youtube.com/watch?v=wDpVc15znJs&t=26s * How a Chainsaw Engine and Carburetor work together: https://www.youtube.com/watch?v=XPgaF-JBwco * Good Maintenance | How to Clean a Chainsaw: https://www.youtube.com/watch?v=YhvcvXUkwqI * Storing a Chainsaw | Good Practice: https://www.youtube.com/watch?v=CiJFACoH0rA&t=24s * How an Ultrasonic Cleaner actually cleans your carburetor: https://www.youtube.com/watch?v=M8F_jLhEJIQ&t=24s TIMESTAMP: 00:19 - What is the Two Stroke Carburetor Main Jet? 00:50 - Neoprene Rubber Valve inside the Main Jet 00:56 - Neoprene Rubber Valve Cap inside the Main Jet 01:12 - 2-Stroke Main Jet Components (cross sectional view) 01:23 - How the 2-Stroke Main Jet Works 02:07 - How the Main Jet works on the Induction Stroke 02:14 - How the Main Jet works at the end of the Induction Stroke 02:58 - How a Main Jet protects the 2-Stroke Carburetor during an Engine Blow-back 03:36 - Main Jet and fuel leakage 03:53 - How the Carburetor Metering System prevents gas fuel leakage into the 2-Stroke Carburetor 03:56 - How gas fuel is lost from the 2-Stroke Main Jet 05:01 - Main Jet Valve Damage by Carburetor Cleaning Spray and Ethanol in gas Fuel 05:18 - How the Main Jet Works Animation Why know these basic fundamentals of how a 2-stroke carburettor main-jet works? Well, lets put that into perspective. When you take your car in to the garage for repair work who do you want to be repairing it? A person with a solid background of experience and theoretical knowledge in the field. Basically, you want them to know your engine inside out! So then, you know the importance of the type of theoretical knowledge explained in this video. Whether your chainsaw wont start, or you need to know how to tune a chainsaw, how to tune a quad bike, how to tune a mini pocket bike or any of the other machines mentioned (basically many types of 2 stroke engine), or need undertake diagnostic checks of your two stroke engine in general, knowing the basics in this video will give you a foundational understanding to help you on your way. The more you learn about, carburetors and how they function, the easier you will find it to tackle carburetor diagnosis and repairs. This is a chance to sit back and increase your knowledge! Many thanks indeed Craig Kirkman (Owner and creator of The Repair Specialist channel and copyrighted diagrammatic content) Website: https://www.therepairspecialistonline.com/

* VISUALLY EXPLAINED by Craig Kirkman, a renowned you tube educator of these systems. In this situation, I show you, that you must find any possible differences you possibly can between the two Fuel Adjuster Screws (Different threads, different lengths, different thicknesses, different shape, different ends and so on). Then you need to check the carburetors fuel screw holes and try to match the screw with a particular hole that you think could accept one of the fuel screws. All 2-Stroke Carb Episodes Here: https://www.youtube.com/playlist?list=PLrlXp3PlwgRI5OLvm3P91LJr1CYnO5TRD For some FREE Printable Download help Leaflets: https://www.therepairspecialistonline.com/ These downloads are from my very own website and are absolutely Free. They consist of just a few help topics so far but I am continually making more of these Free Downloads. The best of them is that they are printable so you can take them into the workshop with you and study them at you own pace. TIMESTAMP: 00:14 - I have mixed up my Two Stroke Carburetor Gas Fuel Screws | What do I do? 00:18 - Checking the Gas Fuel Screw hole on the 2-Stroke Carburetor 00:27 - Matching the Fuel Gas Screws to their correct hole | 2-Stroke Carburetor 00:47 - Some Gas Fuel Screws are very similar to each other | Two Stroke Carburetor 00:57 - Comparing each Gas Fuel Adjuster Screw for their correct Fuel Hole 01:24 - What to look for in the Carburetor Adjuster Screw Holes 02:39 - What to do if the Fuel Adjuster Screws are exactly the same, which Fuel Hole? For what ever your reason for stripping down and servicing your Two Stroke Carburetor, whether your chainsaw wont start, you need to tune your chainsaw or another 2-Stroke engine, or you just need to service your engine, knowing these little tips may well help you in your moment of need. The more you learn about carburetors and how they function, the easier you will find it to tackle carburetor diagnosis and repairs. This is a chance to sit back and increase your knowledge! Many thanks indeed Craig Kirkman (Owner and creator of The Repair Specialist channel) Please check out my amazon shop. I have recommended some useful items from Amazon below. I guarantee you that these items are the sorts of things I use on a daily basis so I know they are good. I have to be careful in recommending products because I have my name and credibility at stake. So I will only recommend good products. https://www.amazon.co.uk/shop/therepairspecialist

* VISUALLY EXPLAINED by Craig Kirkman, a renowned you tube educator of these systems. Very few people know this, but there is a very special Pump inside your Chainsaw Carburetor, and any malfunction of the pump and can cause a whole host of problems (bog, incorrect running and starting issues, to name just some). Powered by the fuel pump diaphragm, this pump is the heart of the 2 stroke chainsaw carburetor. This video uniquely explains how this type of Two-Stroke Carburetor works. This can fit a Chainsaw, Hedge Trimmer, Brush-cutter, Small Quad Bike, Scooter and Mini Pocket Bike. To master carburetor repair and diagnosis, one must know how a carburetor works. All 2-Stroke Carb Episodes Here: https://www.youtube.com/playlist?list=PLrlXp3PlwgRI5OLvm3P91LJr1CYnO5TRD For some FREE Printable Download help Leaflets: https://www.therepairspecialistonline.com/ These downloads are from my very own website and are absolutely Free. They consist of just a few help topics so far but I am continually making more of these Free Downloads. The best of them is that they are printable s