Mercury's 135-hp Optimax has the same power rating as the 3. This problem most often occurs in the top ring groove because it is exposed to the most heat from the combustion chamber. These engines use a fuel and oil mix to provide lubrication. "Lean misfire" can occur when the air/fuel mixture is too lean (not enough gasoline in the mixture) to burn. The oil level inspection window can easily tell you if there's too much or too little motor oil. Always use the correct fuel/oil mix. The richer blend might benefit older equipment, but there’s not much difference. Take a gallon gas can, pour the I/2 gallon oil/gas mixture into it and then add the correct amount of undiluted gasoline to the correct mixture. (That's pretty much all outboards but especially two strokes. I have googled and searched and see anything from 25:1 to 50:1 ?????. Mercury Marine started the 100:1 quite a while back, but discontinued the oil. Synthetic oil is more tolerant of contamination by fuel and water condensation. Refer to question #5 for information on oil. Most race fuels contain more oxygen than pump gas and will cause the motor to run lean. Sometimes high elevations (above 4,000 feet) will increase fuel usage. Run your outboard at normal idle speed for 5-10 minutes to allow the engine to warm up. A gallon of fuel is 128 ounces. For long term reliability, I think using a product such as Ringfree is more important than the brand of oil. Take off the prop, lube the shaft with light oil and put it back on. Tips for filling your lamp up with 1-K kerosene: Filling level: Fill to about ½” below filler cap. I try to avoid too much oil in the mix. 0L of the Algebra -> Equations -> SOLUTION: An outboard engine uses a gasoline-oil fuel mixture in the ratio of 15 to 1. My main mower is my original 1962 Lawn Boy and I have been running it at 40:1 for the past 15-years, and I do not use Lawn Boy oil. You may be able to get a manual from www. So that would translate to about 3. Also, the 2-stroke ever an oil-gasoline mixture must be driven; this comes directly into the gasoline tank. The oil cost is such a small percentage of the operating costs with a boat, so don't be unnecessarily cheap. This is why it is important that research and listening are involved. John--Excessive smoking in a two stroke outboard suggests too much oil in the gas-oil mixture. An air screw adjusts how much air is being delivered thru the pilot circuit: in is rich (less air) and out is lean (more air). It's a 25 gallon tank so there's about 12 gallons remaining. Johnson 115 1999 outboard auto oil/gas mix ran out of gas. Same with my Friends 20 HP Yamaha on his 14' Chris Craft. Motors built prior to that date require a 32/1 ratio, with the exception of a few fishing motors built prior to 1955 that use a 16/1 ratio. Change your onboard 10-micron fuel filter, too. 9 was run every day on my Mercury inflatable dinghy for at least ten minutes. Re: what kind of oil 2 use any 2cycle oil will be ok, not sure of the mix ratio, maybe somebody else can say;; as for the g16, that started this post,, use 10w30 synthetic,, any brand,, you can use regular 10w30 but as said its only 1 qt,, get syn;;; dont be cheap,, its your cart,,. pdf Mixture Chart. Anything over January 1978 can run on a 25-1 fuel mix using the 25-1 jet needle conversion. I think 50 to 1 is too little oil. Both devices tamp more fuel-air mix into the combustion chambers, but a supercharger is driven by the engine directly while a turbocharger has to wait for escaping exhaust gasses to spin it up. You don't want to smoke out the neighborhood when you start up your machine! Mixing a concoction of gas and oil isn't necessarily easy in freezing temperatures while wearing gloves. I checked the fuel line and it has a lot of oil in it. Would putting too much 2 cycle oil in 2 cycle fuel mix cause a string trimmer or blower to stall and not run? why, how this is the case? and if pour out fuel in tank,,,should buy a new spark plug as well? how long to burn out any residue or old fuel inside?. i would say either way too much oil, you didn't accidently add oil twice maybe, or just bad gas. 4 stroke outboard questions it with oil? Should I bother disconnecting the fuel line and run the gas out of the motor after each trip? with too much oil you. If it is a five gallon container just re-add the oil, a double helping isn't going to ruin the trimmer, and if it is evident you have too much (excess smoke) eventually just add gas to the mix. You put more oil in your mixture @ 35:1 therefore its a leaner mix. Email me with questions. Since the fuel and oil don't mix, the oil isn't thinned sufficiently to move up and lubricate the top. When all of the two strokes (the old days) were developed, they all used Castrol petroleum oil at a 20:1 ratio and found that 92 octane gas had the octane reduced to 72 with presence of that much oil. Between the two, I Used about 16 gallons of gas. If I don't know how much gas is in my tank Ill mix oil for my best guess less a little. Helps prevent damage commonly caused by improperly mixed fuel - too much oil can foul spark plugs, and too little can seize your engine. 2 strokes should not smoke, look at those indoor dirt bike stadiums, Jeeesus you would think people would be running from the building with stinging eyes after 10 minutes. S0, 16 gallons of gas = 2048 ounces of Gas. I may actually lose a little power by running too much octane, but nobody has ever melted a piston down from using too much octane. Any Johnson outboard motor built since 1964 requires a 50/1 fuel ratio. Re: A must read for all 2 stroke outboard owners. Fuel oil ratio. Reality too lean” problems by changing the gas/oil mix instead of the jetting. Mixing Fuel and Oil - Older 2 Stroke Outboards If you have an older 2 stroke outboard, it's a fair bet you have to mix your fuel and oil yourself. With too much oil, you will notice blue smoke or the excess oil drips from the string trimmer exhaust. In this case you put the 2 stroke oil into a separate tank on an outboard or a motorcycle. Modern techniques have enabled quality manufacturers to produce engines with closer tolerances. 2 oz of oil to every gallon of gasoline. Too much oil can cause poor idling and spark-plug fouling, while we all know what happens with too little. StarTron enzymatic fuel treatment reduces emissions, prevents fuel oxidation, and stabilizes fuel chemistry for at least 1 year. At some point soon I'll be switching over to the synthetic blend. I have two remaining questions though, being a total noob with old outboard engines: - What is the correct oil type and mixture for these engines? I decided to use a modern "bio-degradable" TCW-3 outboard 2-stroke oil, on the label on the oil they recommended a 1:100 ratio but I decided on 1:50 considering the age of the engine. While too much oil will cause carbon problems in the engine, not enough oil will destroy it! It is far better to err by putting too much oil. we were able to use heat and penetrating oil to get. If you have pre-mixed gas, you may be mixing too much oil into the gas. it will blow a bit more blue smoke. If I don't know how much gas is in my tank Ill mix oil for my best guess less a little. Johnson outboard motors are two-cycle engines. Re: A must read for all 2 stroke outboard owners. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. If a 2st is supposed to have X:1 oil to gas used, and either. Vaping cannabis oils is not hard to do, in fact, it is pretty simple. Two-stroke oil is expensive, and you need about 4 ounces of it per gallon of gas. These engines use a fuel and oil mix to provide lubrication. If you just inadvertently doubled up the oil, the only downside would be the motor making lots of smoke. These outboard motors are generally lighter than their counterparts. I rekon it is around the 2000 model Another question, How do I find out the year modelall the serial numbers have faded off. You can probably get away with running leaner, but one clogged carb jet or fuel filter may lead to problems. Because PLA and PET mix about as well as oil and water, recyclers consider PLA a contaminant. 2L Detroit Diesel engine; however, going over 20% increased the likelihood of injector pump failure. For instance, if you need a. 50:1 should be OK with a modern 2 stroke oil. The oil in the gasoline is the only lubrication the crankcase receives. The amount of fuel in the mix determines its "richness" , not the oil. Too little oil, and your engine may sustain permanent internal damage and overheat. This system was launched to eliminate mixtures with far too much oil due to the operator's unnecessary effort to preclude engine seizures. Idle mixture screws that have settings which are too lean will cause a lean air/fuel mixture, and too much air in the combustion chamber causes the temperature to rise. 25 ml per liter). Gasoline will definitely get into the oil when this is the case. It is best to use a mixture of stabilized fuel with fogging oil. But you could go back to your original ratio if you are worried. The fuel delivery system is certainly the most likely culprit but in most cases it is very quick and easy to eliminate the other two possibilities first. Summer fuel should preferably have a low RVP rating while winter fuel has a high RVP rating. If it's a two stroke, you can add a bit of extra pre-mix oil to the fuel, set the oil pump at a slightly higher than normal base setting, or both for the first tank of fuel, but I'd use a petroleum based oil. Carrying the Yamaha 15F portable outboard motor was fairly easy using the foldout handle in the transom brackets. Pmoeller1 is right, running too much oil in the mix will cause plugs to foul. Two-stroke direct-fuel-injection, DFI, engines are also available. wear and shorter engine life. This system was launched to eliminate mixtures with far too much oil due to the operator's unnecessary effort to preclude engine seizures. John--Excessive smoking in a two stroke outboard suggests too much oil in the gas-oil mixture. Correct the oil mixture to the type of oil used. The first is the combustion of the oil. Refill the engine oil with a good grade of 10-30W. One more thing, too much oil in the mix and/or water in the carbureter bowl will load up a cylinder, too. Worn piston rings may allow too much oil to leak into the combustion chamber, leading to oil fouling. After I have used this oil up I will switch brands to see if it helps with the smoke issue any. 5 gallons at 70:1 you would add 135. Note: Outboards equipped with a Bing carburettor can use the 25:1 ratio. If not enough fuel is getting to the engine the opposite may be true. 2 oz/I/2 gal ratio then add 1/2 gal gas to what you already have. Do NOT add oil to the fuel of 4 cycle marine engines. The decision to purchase an outboard engine is getting more selective as technology improves. Use ONLY 2-stroke outboard motor oil with an NMMA (National Marine Manufacturer's Assoc. How much Oil should my Mercury Optimax 90 burnI'm thinking I'm using WAY, WAY too much oil. His still has the VRO pump, but he has cut the oil lines and mixes the gas now just to be safe. Most outboard motors run this mix. One of the guys, who has fished and messed with outboards for decades, said that the Merc racing teams he used to work with would double, and sometimes triple, the oil mixture to increase the. This results in extraordinary new technology that we're using in our 50 and 90 hp motors. Most manufacturers use a 50:1 ratio (that is 50 parts of fuel to 1 part of oil) or a 1 00:1 ratio. Depending on how hard you ran the engine, the oil could last through several tanks of gas. What is the correct oil fuel ratio on my 25hp johnson outboard? I have a 25hp 1983 johnson outboard and i was wondering if anyone could tell me the correct oil fuel ratio i was told when buying the boat that the ratio was 50:1 however on the engine it says 100:1. Too Much Fuel. Castrol Power 1 TTS Racing is an outstanding full synthetic, low smoke, high performance two-stroke engine oil. If your bike smokes too much, a lot of people will recommend leaning out your fuel to oil mixture. But you could go back to your original ratio if you are worried. I may actually lose a little power by running too much octane, but nobody has ever melted a piston down from using too much octane. Too much oil and you get carbon buildup and excessive exhaust smoke, and too little oil can be catastrophic. At a 40:1 ratio, that means you'll need 3. 50:1 and 40:1 fuel mix will operate in all fast R. Using the right type of fuel is critical in the safe and efficient operation of your STIHL equipment. For at least 15 years or more, your Yamaha outboard (and every other type of 2-cycle engine with automatic oil-injection) has been set up to use only a 50:1 fuel/oil mixture to reduce smoking and give better fuel economy. Evinrude outboard motors made since 1964 require a 50 to 1 fuel to oil mixture using 6 gallons of gas per 1 pint of oil. If your outboard is equipped with oil injection, no oil should be added to your fuel tank. 00 ounces per gallon Locate your mixture ratio on the left then find how many gallons of gas you want to make on the right For example: You want to mix 4 gallons at 80:1, you would add 6. Note: Outboards equipped with a Bing carburettor can use the 25:1 ratio. I checked the fuel line and it has a lot of oil in it. The Home Depot also sells pre-mixed fuel that is ready to use in your 2-Cycle equipment. Most Americans have a ratio of around 15:1 while the idea ratio is more around a 4:1 or less. After great results from Amsoil MC oil in my Valkyrie, I decided to become a dealer. How To Mix Two-Stroke Fuel. Use ONLY major outboard manufacturers oil, Mercury, Yamaha, Johnson/Evinrude TCW-3. Too Much Fuel. It's a good idea to always use a fuel stabilizer such as StarTron or StaBil ethanol formula. Lucas Fuel Treatment is formulated for both gasoline and diesel engines, carbureted or fuel injected. For instance, if you need a. For any other specific questions or concerns related to fuel and oil, make sure to contact a Briggs & Stratton Dealer near you. I can’t say too much about her just now. A few taps on a calculator will give you this information. This includes a CDI or TCI ignition system, an optimally balanced crankshaft, a long span mounting system and a labyrinth exhaust. Fuel injector pintle, ball or disc seat leaks as well as the bottom O-ring leak on a side feed injector will cause fuel to escape into the intake manifold. Both devices tamp more fuel-air mix into the combustion chambers, but a supercharger is driven by the engine directly while a turbocharger has to wait for escaping exhaust gasses to spin it up. The equation is 13 x 2 = 26. For smaller motors I have just been able to squeeze the bottle into the lower unit. If you've ever looked for the best way to add years of life to your lawn equipment, prevent marine engine corrosion or safely store your classic car, you've heard of the STA-BIL® Brand. The composite material is made of tiny silicon carbide particles. This results in friction between the metal surfaces and wear of the parts. I've been using Evinrude regular 2-stroke outboard oil for years now. Likewise though, I feel about 2 to three gallons of unmixed fuel added to the existing fuel may bring it close to the proper ratio for break-in. Gives about 30 seconds or running time. Using the right type of fuel is critical in the safe and efficient operation of your STIHL equipment. Banse This review is based upon a two-year evaluation of a production 9. The richer blend might benefit older equipment, but there’s not much difference. A two-cycle weed eater requires a proper mix of fuel and oil. Not Enough Fuel. 1946-49 Johnson Td20 and Hd-25 - I've read original was 16:1 and some say now to run 24:1. 2 strokes should not smoke, look at those indoor dirt bike stadiums, Jeeesus you would think people would be running from the building with stinging eyes after 10 minutes. Another key is not pulling it out of the water until you have all the tools assembled. Notice: Undefined index: HTTP_REFERER in /home/yq2sw6g6/loja. The consensus was that to implement such a project would require at least six years, if. Refer to question #5 for information on oil. this motor has pretty much done this since new so it must be the oil/gas mix. If the fuel pressure in your car is too high, that may cause gasoline to get into the engine oil. Another issue is some 2 stroke motors use an oil pump to mix the oil into the gas. When I'm idling, or putt-putting, a lot of smoke comes out with the exhaust. Conventional 2-stroke outboards mix oil with gas for lubrication. The throttle sensor will send a signal to the fuel injection system as to how much power the engine is demanding. When you consume too much omega-6 in your diet, it competes with the absorption of omega-3 because. Rattling more and more. I then mix in 16-20 oz of Klotz depending on if I'm mixing 4 or 5 gallons of fuel. All two stroke outboards require an oil / fuel mixture when being used. The difference in power to plane, acceleration, top-end speed, and fuel economy was nothing short of amazing according to Yamaha. I mixed the fuel/oil ratio with too much oil. Not Enough Fuel. Here’s how to properly mix the fuel. Vintage two stroke engines were designed for a higher oil ratio like 24:1 , resulting into a much LOWER octane level than recent outboards running with two to four times less oil than vintage outboard. 4oz oil/1 gal gas. 8 US ounces (100 ml). If I don't know how much gas is in my tank Ill mix oil for my best guess less a little. (follow brand directions and be sure 2-stroke pre-mix models have the appropriate oil also in the fuel). The synthetic oils costs 25- to 50-percent more than mineral-based oil, but we're talking about a difference of perhaps $7. thats not to say that it should be a lot , but most people that mix , do so with the feeling that a little more oil than necessary is good. Don't run it out of water. Specifically designed for outboard motors, Outboard 100:1 Pre-Mix Synthetic 2-Stroke Oil contains a heavy dose of low-temperature dispersant additives that excel at reducing varnish, carbon and deposit formation in water-cooled motors. I figure I should take out the spark plug and sandpaper the contacts, but I don't know if that will fix it or even help. Simply speaking, only two-stroke engines need oil mixed in with the fuel. These engines use a fuel and oil mix to provide lubrication. So it was getting too much gas. Does anyone know the correct fuel to 2 stroke oil ratio for a mariner 2HP outboard motor (it's probably 10 years old) ? 100/1 50/1 25/1 or what ? Have searched and searched without success, even the mariner site doesnt give this info surprisingly, and the closest I can get is plenty of sites selling the owners manual. Tom you are probably close with your fuel estimate, though I think it is a little high but you are assuming all of my time was at cruise. Any tips for changing the engine oil? Do I need to change the filter or is changing the oil enough?. So why is the engine burning oil? If the outboard is a two stroke, don't worry too much here, this is actually a really good thing!. However, outboard. I need to change the oil and lower unit fluid. Loads of low speed running at tickover and you don't want too much oil. Also, two clock outboards are always a bit sparkling, but also have a much higher fuel consumption than the modern 4-stroke outboard engine. Note: Outboards equipped with a Bing carburettor can use the 25:1 ratio. The gas to oil mix ration for the Johnson boat motor is 40:1 for this year and style outboard. 8 US ounces (100 ml). Also is that the right ratio? also when im fueling up, should i put the gas in the bike, then drop the oil in? or should i have a seperate container with gas, put the right amount of oil and shake it so it mixes first? Probly a total LOLOL question but im noob. ¶ In the old days, two stroke engines used a fuel mixture of gas and oil called Pre-Mix. I use Amsoil Quickshot during the riding season, so my fuel is consistently keeping everything clean and protected. ratios mix is not too critical in most two stoke engines in particular your strimmer as allowances are made in the tolerances when manufactured a few ml here and there will not harm the engine so long as your close enough ,there are however a few things to consider too much oil causes smoke and runs the petrol mix lean which will over heat the. For 5 gallons of gas, with a 50:1 ratio, the amount of oil required is 12. I used gas from the wrong can and leaf blower ran rough for 20 seconds, started smoking like a B, and stopped. The richer blend might benefit older equipment, but there's not much difference. no harm with going a little richer… just more smoke. This results in friction between the metal surfaces and wear of the parts. no its not ok. Johnson and Evinrude carbureted 2-stroke outboards since 1964 require a 50:1 fuel to oil mixture (2%) on engines without an automatic oiling system - 6 gallons of gas to 1 pint of outboard oil. While too much oil will cause carbon problems in the engine, not enough oil will destroy it! It is far better to err by putting too much oil. Fuel fouled Fuel-fouled plugs may have a shiny coating on the tip and side electrode, which may indicate a too-rich fuel mixture, ignition problems or a plug heat range that’s set too low. The main rule of thumb is to mix the oil to the motor specs. The best combustion efficiency occurs at the optimum air-to-fuel ratio and controlling this provides the highest efficiency. just bought a 2008 yz250 what fuel/oil ratio mixture should i use. Here’s how to properly mix the fuel. How To Mix Two-Stroke Fuel. 90-450 psi of conventional direct injection. A 4 cycle engine runs on a mix of gas and air and this ratio has to be correct, too much gas causes the engine to run rich, too much air causes the engine to run lean and causes overheating and possible engine damage. For long term reliability, I think using a product such as Ringfree is more important than the brand of oil. (That's pretty much all outboards but especially two strokes. The oil metering system (OMS), often mistakenly called VRO, is easily bypassed and that is explained in your owners manual. (I don't know if it smokes at higher speeds. This can damage the engine, will cause oil leaks and excessive white smoke. The oil was stored in a Oil Vessel, also known as an Oil Tank. Mariner is part of Mercury, ie part of Brunswick based in USA, they own Sealine, Searay and loads of other boat firms. A high performance 2-cycle engine oil for all STIHL products, especially professional chainsaws. Supplying too much fuel is called a ''rich'' mixture and causes excess emissions or smoke from the exhaust. Re: Fuel oil mix for a 2 stroke Its a 2nd hand engine, forgot to ask the guy who sold it too me, I have only ever had a 4 stroke. In the old days, gassy smelling oil could me a ruptured fuel pump diaphragm, miss-adjusted choke, stuck needle valve, too much short trip driving, misfiring ,or too much fuel pump pressure. The motors built under jan-78 have different bearings and cant cope with 25-1 and will sieze up on you. Will this hurt it? What is the proper fuel mix for an 89 Mariner 20hp outboard motor-2 stroke? What is the proper fuel / oil mix for a 200HP 91 Johnson outboard motor, #G02981078?. I mixed the fuel/oil ratio with too much oil. ) pump gas with oil mix only is speaking directly to the 2-stroke guys. Too much oil in two stroke mix consequences? I've had it suggested to me before that any additional fluids taken in with the fuel air mix can serve to reduce the amount of volume taken up by fuel, therefore making the engine run lean. php(143) : runtime-created function(1) : eval()'d code(156) : runtime-created. The wintry mix boosted November bidweek prices across the Midwest by as much as 85. Shoreline Marine Oil Mixing Bottle: An easy-to-use bottle that helps you properly mix your fuel/oil. Will the 2-stroke fuel i mixed a few minutes ago make too much smoke? Because i used 20ml of 2-stroke oil to make one litre of mix because that's what my brushcutter manual said and when pouring the petrol i accidently went over the 1 litre mark on the mixing container and decided to put 10ml more oil in to avoid the situation of. At £43 a can (Mailspeed Marine have now realised they were doing it too cheap at £27:thumbdown) this adds quite a bit to the running costs. ) certified rating of TCW3. You should also check the oxygen and throttle valve sensors too because they are responsible for managing the vehicle’s fuel system by ensuring the engine gets the proper mixture of air and fuel. 0 chainsaw is an older model of chainsaw, so it’s likely that some — if not all — of the fuel components in your chainsaw are dirty or restricted. This results in friction between the metal surfaces and wear of the parts. Here’s how to properly mix the fuel. Remove the filler plug with a coin or Seagull combination spanner. Each engine has a different oil/gas mix ratio. Fuel to Oil Mix Ratio For 2 Cycle, Water Cooled Outboard Motors: The reason for mixing oil into the gasoline is that since these engines are 2 cycle (sometimes called 2 stroke) which fire on each stroke of the piston, there needs to be oil mixed into the gas to lubricate the internal parts of the engine (piston, crankshaft and bearings), as. So this weekend, wife & I got it out and it started right up but got LOTS of smoke from the exhausttoo much oil in the gas. So that would translate to about 3. Too much oil and you get carbon buildup and excessive exhaust smoke, and too little oil can be catastrophic. I made a mistake and put too much oil mix (8 ounces more than needed) in with my outboard motor gas. All British Seagull outboard engines should run on unleaded petrol. 0 chainsaw is an older model of chainsaw, so it’s likely that some — if not all — of the fuel components in your chainsaw are dirty or restricted. 6 is what I have marked on my mix device. with real gas i used to mix a gallon at a time and be good for months, but with ethanol gas now it ruins too quickly. What could happen if you put too much oil in a boat motor? We know we did put too much in the motor but our friend (who is a avid boater) said no big deal just drive it and burn it off. Responsible for compressing the air-fuel mixture, then forcing it from the exhaust, the piston can overheat and suffer catastrophic damage from a number of reasons. If you are going to use race fuel, pump fuel or a mixture of the two use that fuel while jetting the carb. After the engine has run for a few seconds, you can generally set the choke to off (choke plate no longer blocking the throat of the carburetor). - Meets all outboard and personal watercraft manufacturers' recommendations for use of TC-W2 and TC-W3 oils in pre-mix or oil-injected 2-cycle applications. In an outboard that uses an active oil mixing system, my first suspicion would be that system and I am not familiar with the Yamaha OX66 oiling system. No other brand of outboards produces fewer reportable emissions than the Evinrude E-TEC family of engines. I need to change the oil and lower unit fluid. If you’ve measured this mixture wrong, your fuel may be causing your engine to smoke. Another key is not pulling it out of the water until you have all the tools assembled. Two-stroke engines do not use fuel efficiently, so you would get fewer miles per gallon. Evinrude outboard motors made since 1964 require a 50 to 1 fuel to oil mixture using 6 gallons of gas per 1 pint of oil. no harm with going a little richer… just more smoke. I have googled and searched and see anything from 25:1 to 50:1 ?????. Excessive quantities of oil will cause the spark plugs to foul and the engine run ragged or refuse to start. If it's a two stroke, you can add a bit of extra pre-mix oil to the fuel, set the oil pump at a slightly higher than normal base setting, or both for the first tank of fuel, but I'd use a petroleum based oil. Will this hurt it?. 9 Mercury, four-stroke outboard motor. Tohatsu outboards were originally developed for commercial Japanese fishermen who needed a motor that could run for days on end, no matter what the weather. Take a gallon gas can, pour the I/2 gallon oil/gas mixture into it and then add the correct amount of undiluted gasoline to the correct mixture. 2-stroke oil can contain around 16ppm zinc, or higher depending on the formulation and batch. Using a different brand of 2-Stroke oil? You'll need to mix at 25:1 (40mls oil per 1 litre fuel). The fuel treat is very important when winterizing your outboard. A high performance 2-cycle engine oil for all STIHL products, especially professional chainsaws. Please review our Warranty, Returns & Refunds policies before you place an order. To check the gear oil level, lay the outboard on the ground With the prop and fuel tank facing down. - Meets all outboard and personal watercraft manufacturers' recommendations for use of TC-W2 and TC-W3 oils in pre-mix or oil-injected 2-cycle applications. 9 inches) of rain — 120 percent of the annual average and 25 times as much as the average October — fell in just four hours. If you don’t put in enough oil, the engine will overheat, causing it to seize. As it is only 4hp, I shouldn't worry too much, bung in a 15-1 to start with, and if blue smoke belches forth, take it down a tad by bunging a bit more juice in the mix. Most motors manufactured before 1960 require at least ½ pint per gallon of gas with some needing ¾ (or more) of a pint per gallon. This problem most often occurs in the top ring groove because it is exposed to the most heat from the combustion chamber. If there's only a little too much oil in the mixture, you may not notice any difference in your engine's performance at all. For 5 gallons of gas, with a 50:1 ratio, the amount of oil required is 12. New 4 HP Outboard Motor 4 Stroke 38CC Outboard Engine With Air Cooling System RECOMMENDED ENGINE OIL:4-stroke outboard motor oil DEMENSION(L*W*H) :365x220x920mm G. It's a good idea to always use a fuel stabilizer such as StarTron or StaBil ethanol formula. Re: Oil to Gas ratio for my 15hp outboard « Reply #12 on: Apr 22, 2010, 08:39 PM » do you but the stabil in every tank or just at the beggining or end of the season. 4kW (40PS) outboard class to incorporate a timing chain. 50:1 should be OK with a modern 2 stroke oil. The oil in the gasoline is the only lubrication the crankcase receives. Too much oil and you get carbon buildup and excessive exhaust smoke, and too little oil can be catastrophic. Both have low vibration levels for loopcharged twins that are high enough to reduce tiller arm flab but not induce numbness after a long run to a favourite fishing spot. Two-stroke mix ratios apply to two-stroke equipment that requires oil and gas to be pre-mixed. Supplying too little fuel is called a ''lean'' mixture and causes poor heat generation and a rough running engine. per gallon with aditive and oil I'm only looking at around $57. If it still smokes too much at idle, you'll probably want to address the oil injection pump. You may be able to get a manual from www. 25 ml), 4 ounces per gallon of gas (31. Say 4 ounces of 2-stroke oil, a little bit of fuel stabilizer, and the balance of non-ethanol gasoline. As far as getting the mixture right I like to add oil then gas, oil then gas, and so forth. This compression ratio means that the outboard is designed to compress the fuel/air mixture at 6 times atmospheric pressure. All STIHL gasoline-powered equipment runs on a 50:1 mixture of gasoline and 2-cycle engine oil. At £43 a can (Mailspeed Marine have now realised they were doing it too cheap at £27:thumbdown) this adds quite a bit to the running costs. Only an 8% to 10% restriction in a single fuel injector can be enough to upset the air/fuel mixture and cause a misfire. Tom you are probably close with your fuel estimate, though I think it is a little high but you are assuming all of my time was at cruise. Performance and econ- motor trim angle may have little effect on the omy are decreased because the hull of the trim of the boat when operating. Other models require the user to mix the oil and fuel together in the outboard's main fuel tank each time the fuel tank is topped up (this is known as a premix model) In addition to this you will need to know if your outboard's oil/fuel mixture is either 50:1 or 100:1 so that the correct amount of oil is poured into the fuel tank. This also tends to foul the spark plugs. Re: 1960 40 hp johnson fuel mixture The ratio of oil to fuel is crucial to the reliable running of a 2 stroke engine, for a 1960's 2 stroke engine 50/1 will be too little oil, it should be I'm sure more like 25/1. 2 oz of oil to every gallon of gasoline. Use a ring compressor. If an engine doesn’t get enough fuel (too lean), it will lose power, fade under load, and overheat. Johnson 115 1999 outboard auto oil/gas mix ran out of gas. 1946-49 Johnson Td20 and Hd-25 - I've read original was 16:1 and some say now to run 24:1. Others have an air adjusting screw. On top of that the four stroke engine is a lot more convenient. The ignition system may not be performing properly. 11-COMPOSITE FLAKING Most two-stroke cylinders used on motorcycles and snowmobiles, have composite plated cylinders. ) For 5 gallons of gas, with a 32:1 ratio, the amount of oil required is 20 US ounces (156. discount-marine-parts. Johnson and Evinrude carbureted 2-stroke outboards since 1964 require a 50:1 fuel to oil mixture (2%) on engines without an automatic oiling system - 6 gallons of gas to 1 pint of outboard oil. How much gasoline must be mixed with a gasoline-oil mixture, which is 75% gasoline, to make 8.