![]() ![]() 2 stroke fuel oil mix chart In this guide we step through the why it's vital to get the right 2 stroke fuel oil mix and some methods to work out which ratio to use for your outboard.Ģ Stroke Outboard Fuel Mix Ratio 50:1 100:1? Finding the right mix for your outboard. For normal service, fuel:oil ratio should be 50: 1 on models prior to 1986 and 100: 1 on 1986 and later models when using Suzuki Outboard Motor Oil or a good. #Suzuki dt4 fuel mixture how to#įinishing with tips on how to mix two stroke efficiently and safely. Why mix Fuel & Oil anyway?Īny outboard described as a 'two stroke' engine is an internal combustion engine than burins injected fuel through a reduced power cyle of just ignition and exaust (more info about the difference between two stroke and four stroke engines here. ) Due to this design it is necessary to provide the engine with lubrication (the oil) actually within the injected fuel (the petrol or gas). ![]() The relative proportions of these two components is called the ' fuel mix ratio'. Getting the mix rightĮvery engine will have it's own fuel mix ratio, often mandated by power, intended use and age of the outboard and manufacturers state this required mix ratio and any tolerance (if there is any!) in the owners documentation that came with the original purchase. Not knowing and running the right mix can cause a whold bunch of problems. Suzuki DT4 outboard motors Service Repair Manual Suzuki OT9.9 & OT15 (1983-1987) & 0T15C (1988) SERVICE MANUAL LUBRICATION The power head is lubricated by oil mixed with the fuel. Difficulty starting, performance degradation, increased wear & tear of internal components, excessive smoke from the exhaust to name a few. Knowing the right mix is simple enough if you're buying a new outboard or were lucky enough to get the original owners manuals when purchasing an secondhand outboard but often these get mislaid as engines passthrough various owners over the course of their lifetime of years or even decades! Most outboards will tolerate an incorrect mix on occassion but running the wrong fuel oil mix over for any prolonged period of time is likely cause reliability and performance issues at best and potentially irrepairable damage at worst. If you're in this buck and don't have the original owners manual then you'll need to determine the right mix prior to use. Search for clues on the outboard - Most reliable!Ī good proportion of outboard manufacturers will print/inscribe/stamp the right fuel mix ratio somewhere on the unit itself. This might be really obvious on the cowling like in the image below of a late 1980s Yamaha outboard or it can be a bit trickier to track down being on the underside of the cowling, embossed on the fuel filler cap (outside or inside) or stamped on the side of the fuel tank. These are the most common locations but if you don't find any reference in these common places look for a reference on any engine number, batch or quality controls stickers or plates. This Yamaha's fuel mix ratio is clearly marked on the cowling at 1:100 Method 2. Information on this page has come from multiple third parties and can not be guaranteed to be accurate.If a robust search of the engine doesn't surface anything the next best method is to reference either the original manufacturers owners handbook/operators guide or a service and repair manual. Box 1100 Brea, California 92621 SUZUKI DT2 1b determine model and year of manufacture of Suzuki outboard motors, refer to numbers. 2 stroke fuel oil mix chart In this guide we step through the why its vital to get the right 2 stroke fuel oil mix and some methods to work out which ratio to use for your outboard. SUZUKI SUZUKI AMERICA CORPORATION 3251 E. The iboats Forum Directory can likely help you find a lot of outboard information as it is arranged by subject. Suzuki dt4 fuel mixture how to Finishing with tips on how to mix two stroke efficiently and safely. The iboats Outboard Motor Forums are another excellent source of information. Thus, for safety and other reasons, it is a good idea to verify information here to Even if this information is the same as the original factory specs,īoats are sometimes modified. Many sources we can not guarantee its accuracy. Information on this page is provided to you as a free service of. Be sure to do your testing under your normal boating conditions and with a good propeller (not bent, cracked, or excessively chipped). You want your RPM's to be within the proper range while at wide open throttle (WOT). For example, if you look at your tachometer at top speed and it is not within the engine's RPM range then that is generally not good. Your engine's RPM range is important in choosing the right propeller for a given application. ![]() This model has a recoil starter and power steering. The bore width is 1.81" and the stroke length is 1.65". This outboard engine weighs approximately 50.5 pounds. This 1977, 4.5 hp Suzuki is made for saltwater. ![]()
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