Oil to gas ratio for chainsaw

If your car runs on regular gasoline, you would never even think of putting diesel fuel in your tank. Likewise, you wouldn't try to run a flashlight on D batteries when it takes AA batteries. That's because trying to operate any electronic device or tool with the wrong power source can be, at the very least, ineffective. In some cases, using the wrong fuel can even be damaging and dangerous. Using the right fuel mixed with the accurate ratio of components is essential for the safe and efficient operation of your chainsaw. Stihl gasoline-powered equipment uses a ratio of gasoline and 2-cycle engine oil.

How to mix two-stroke fuel

Welcome, Guest. Please login or register. Send this topic Print. Author Topic: instead of ? Read times. I read on the topic of over-revving that some forum members were reccomending using a greater amount of oil in their pre-mix than the saw reccomends Making somthing idiot-proof only leads to the creation of bigger idiots! Your saw will be much better off at 40 to 1. I think 50 to 1 is too little oil.

You really shouldn't have to tune it much with this change. Theoreticaly it will be a little leaner on the fuel to oxygen ratio less gas and more oil in a given volume but this will be very slight.

So, husqvarna recommends around a mix? KarlP member Posts: The other countries do not have the EPA. No manufacturer is legally allowed to recommend anything more than mix in the USA. The other countries are not restricted by such legalities and they can actually recommend the mix that the saw was designed to use.

The ratio is I picked up a new Dolmar last week. The International user manual tell me to mix the oil So if I were to read between the lines the saw manufacturers stroke the test results by using a 50 to 1 mix but really design the saws to run best on a richer mixture. Joseph member Posts: 8 I am new here! Quote from: bitternut on December 26, , PM. I just wanted to thank everyone for their responses I think I'll start mixing a little more oil into that premix and quit worrying about getting that "exact" mixture now that I hear others are running in their saws.

Canada Gender:. I am with StihlDoc on this one. Running a richer mixture also leads to plugging the ports and spark arrestor. I have not seen any oil related problems at , I have run my Husky at on Opti-2 for the last 5 years. However, it is your saw and your nickel, if you feel better running heavier by all means go for it. I used to smoke camels but found them hard to light and kicked to much. If you ever have a chance to look through Stihl's engine failure diagnostic manual you will find that running a mixture too rich say leads to excessive carbon build up and piston scoring on the exhaust port side and ring sticking as the carbon build up falls back in on the piston.

It is the equivelent of running too lean as far as engine failure. Probably more common since most people are more comfortable running a rich mix since they feel better. Most folks don't notice the reduced service life since they put very few hours on a saw so service life still appears to be good to them.

They rarely run WTO all day so trolling was extremely hard on them and the motors suffered greatly as well as pumped allot of unburned oil into the water.

Making Tillamook Bay safe for bait; one salmon at a time. Tillaway is absolutely correct. With all due respect to bwalker and others, oil technology has changed dramatically and so have engines. The old engines had wider tolerances so required more of the oil that was available at the time. They also ran at lower speeds and did not need the new super oils. A friend who is from the old school insisted on running his Johnson outboard on SAE30 at just as he did in the fifties.

I convinced him to use outboard motor oil because of hard starting and fouled plugs. He still refuses to go any leaner than yet there is a white goop which is water and unburned oil in the exhaust port. The new concentrated oils simply will not burn clean when mixed too heavily.

Quote from: bwalker on December 29, , PM. Share Topic. Powered by EzPortal. SMF 2. The Forestry Forum is sponsored in part by:. Forestry Forum Sponsored by:.

Read times 0 Members and 4 Guests are viewing this topic. Todd Logged Making somthing idiot-proof only leads to the creation of bigger idiots!

Re: instead of ? Logged KarlP member Posts: 10 Re: instead of ? I used their online form to ask them about this twice and got no response. The third time I asked a simpler question to start with and followed up with what I really wanted to know. Me: "What fuel to oil mix ratio to you recommend for the longest engine life of a Husqvarna xp used for chainsaw milling?

I assumed it was for longer engine life. The owners manuals for all Husqvarna products in the US call for a fuel ratio. After that I switch to 3oz of Mobil 1 racing per US gallon. Logged scottr Full Member x2 Posts: I need to edit my profile! To clear up any misconceptions, the EPA does not mandate any mix ratio on two-strokes.

The manufacturers tell the EPA what ratio and oil formulation is used when they give their emissions level data to the government. The ingredients in the oil and engine design are the determining factors in what a manufacturer recommends for a mix ratio.

Logged Joseph member Posts: 8 I am new here! Look like that, does it not? The oil mix ratio has only a minimal effect on what the EPA regulates. Scavenging loss unburned gasoline is the big contributor. The ratios are recommended because the modern two-stroke oils have better additives to prevent ring sticking and piston seizure than the oils used 20 years ago.

The newer oils used at richer than ecommended ratios can lead to deposit build-up and eventual engine damage over the long term due to deposit build-up. Canada Gender: Re: instead of ? With all due respect, i know this is the Stihl company line. Its complete BS. OIl technology has changed very little untill the last 5 or so years. I run all my saws at and I would challenge you to see anymore smoke than stihl orange bottle oil at In fact I will bet you my saw will smoke less.

Further more deposit levels will be less. Logged 1 person liked this Making Tillamook Bay safe for bait; one salmon at a time. With all due respect, I have been around two-stroke engine and lubricant development for over 30 years and have not experienced the same observations you supplied.

I would be interested to know where your information comes from or is it personal opinion?

Using the right type of fuel is critical in the safe and efficient operation of your STIHL equipment. All STIHL gasoline-powered equipment runs on a mixture of. If you are treating 1 gallon of clean unleaded gasoline, a ration translates to ounces of two-cycle oil, while preparing a blend calls.

Send us your question or comments. We will get back to you as soon as possible. Unlike a four-stroke engine, a unique feature of a two-stroke engine is that they do not have an internal oil reservoir. Instead, two-stroke engines require the owner to mix oil into the fuel at a predetermined ratio in order to ensure the engine receives adequate lubrication during operation. The first true two-stroke engines were introduced more than a century ago and used to power motorcycles.

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Do you have questions about mixing oil and gas for 2-cycle engines? Two-cycle engines in smaller outdoor power equipment like chainsaws, leaf blowers and trimmers need oil and gas.

How to Mix Oil and Gas for a Chainsaw

Although modern gas powered chainsaws are very efficient and advanced these days, there is one thing they all still want you to do. Mix your oil and gas in the same fuel tank! Not mixing oil and gas together may cause a lot of head-scratching when you pull the starter cord, and you get a few false starts , but your chainsaw will not start running. Today theprocutter. A chainsaw and its operator manual, the correct gas, the recommended oil, an approved container, and along with this a set of tables that tell you how much of oil goes with how much gas. The ratio of oil to gas is critical for not only for the longevity of your chainsaw but getting it running right in the first place.

9 Simple Steps to Properly Mix 2-Stroke Fuel for a Husqvarna Chainsaw

The fact is, most chainsaws are built with 2-cycle or 2-stroke engines which require a mixture of fuel and oil to run. Oil is mixed with gasoline i. Without oil in the fuel tank, the internal components would seize up. Before I show you how to mix chainsaw fuel, I wanted to make you aware that I have several chainsaw buying guides to help you find the perfect tool for your needs. Each one shows you what the top features are to look for in a particular type of chainsaw and offers reviews of the top products you can buy today. Never use the cheap stuff. And never use petrol that contains ethanol. Non-approved plastics become brittle with age and are incompatible with chemical properties of gasoline. Many of those containers are also not strong enough to withstand the pressures of expansion and contraction caused by temperature changes.

Outboard engines, leaf blowers, weed trimmers and other equipment with small engines often have a 2-cycle, also known as 2-stroke, engine. If the engine has a single fill port for both engine oil and gas, it is a 2-cycle engine that requires a specific mix of oil and gas to function properly.

The two-cycle, or two-stroke, combustion engine that powers a chain saw operates on the principle of a single piston that makes only two moves -- one up and one down -- to generate the energy required. To keep things running smoothly, oil must be added to the gasoline, and the amount of oil called for depends on how much fuel you are premixing, and to the specific gas-to-oil ratio specified in the owner's manual. The general ratio for most two-stroke chain saw combustion engines is , though some manufacturers recommend The larger number represents the amount of gasoline, while the smaller is the amount of oil needed.

What is the Correct Gas to Oil Mix for Chainsaws?

Chainsaws can be expensive machines, and if you own one, you are sure to want to keep it in good working order. If you have a gas-powered one, part of this will mean always using the correct fuel — and since most chainsaws are 2-stroke models, this will involve mixing up the right gas-and-oil mix. What is the correct gas to oil ratio for chainsaws? Why do you need to mix gas and oil like this? Here, we have the answers to these questions and more to help you keep your chainsaw running the way you want it to. Without going deep into the mechanics of how chainsaw engines work, a 2-stroke engine produces power for every two strokes of the pistons while a 4-stroke engine requires four strokes to produce power. In a 4-stroke engine, on the third stroke, oil is taken from a special oil reservoir and brought into the engine to lubricate it. Since there is a separate oil reservoir and a stroke dedicated to lubrication, there is no need to mix oil into the gas the engine runs on. There is no separate oil reservoir and there is no stroke dedicated to the lubrication of the engine — and for this reason, to keep a 2-stroke engine running smoothly, oil needs to be added to the fuel. There is no standard oil-to-gas ratio across engines, and you will need to check the manual for your particular chainsaw. However, most 2-stroke chainsaw engines, as well as any other similar power tools, run on a mixture that is one part oil to 50 parts gas, However, many run on a ratio of , and other optimum ratios are possible — this is why it is essential to check the requirements of your machine. So what does this look like in practice?

How to Mix Oil and Gas for your Outdoor Equipment

Unsuitable fuels or mix ratios that do not comply with the specification can seriously damage the engine piston seizing, excessive wear. For a mixing ratio of 1 : 50 you need 5 litres of petrol and 0. Always use high-quality petrol with a minimum octane number of 90 RON we recommend using unleaded to protect your health and the environment. Please note that machines fitted with a catalytic converter must run on unleaded petrol, as otherwise the efficiency of the catalyst may be considerably impaired or the catalytic converter in your machine may actually be damaged. Always use quality two-stroke engine oil complying with the TC classification. To mix the fuel, first pour the engine oil and then the petrol into a suitable can approved for use with fuel. Before pouring this mix into the fuel tank, first mix it thoroughly by shaking the can. Take care when opening the can as pressure may have built up inside.