How do i know if my outboard is 2 stroke or 4 stroke

It has a small reservoir that has oil. The crankshaft makes two rotations for every one cycle of the piston.

It has a small reservoir that has oil.

How do i know if my outboard is 2 stroke or 4 stroke. It has a Johnson GT100 outboard engine. I dont see any markings indicating a real number or any identification except the cover which says Johnson GT100. How do I tell if its a 2 or 4 stroke.

It has a small reservoir that has oil. A container for gas that is close to the oil reservoir. I dont know if my outboard is a two stroke or four stroke its a 1977 Johnson 115 hp model number 115etl77 serial number j4801418.

I also but in the fuel tank a fuel boost octane and I notice it was smoking some and it wouldnt rev up it would just stay on idle could that affect the performance. The easiest way to identify a 4 stroke and 2 stroke engine just by looking at it is to see where the inlet goes to that is where the carburetor is attached. If it is attached to the cylinder blo.

Usually two wheeler engines are easier to identify since most of them are exposed. When deciding between a 2 and 4 stroke outboard motor it all comes down to your preferences and the type of boat you have. As with any purchase always do your research online and determine which features are most important to you whether its.

Well does the motor have a dipstick to check the oil level like you would a car if so then its a four stroke or is there a timing belt from under the fly wheel that would run to the back of the motor to a cam shaft pully that would make it a four stroke or do you have a plastic onboard oil resevoireither on the motor or somewhere on the boat that would make it a two stroke if that doesnt help then i need. Look for a oil filler cap. If it exists its likely a 4 stroke.

However many 2 stroke engines also have oil injection for their larger engines - whether or not it includes 15hp or not I am not sure. For many of the smaller 2 stroke engines you still have to mix oil. Additionally four-stroke outboard motors put out few emissions and are amazingly fuel-efficient.

The main disadvantage of a four-stroke motor is its size. Larger and heavier than its two-stroke counterpart four-strokes are more expensive to build although manufacturers are. With a 2 stroke engine you mix the oil with the gas.

With a 4 stroke engine there are separate tanks for the oil and the gas. I dont know if you have a 2 or a 4 stroke motor but I have not seen any outboard four strokes that dont say four stroke on the cowling somewhere. I also havnt seen too many 2 strokes run for all that long without oil at WOT.

Seems to me the motor has a problem possibly not induced by lack of oil in the tank. Four-Stroke Outboard Motors. In a four-stroke engine the five combustion cycle steps occur in four strokes of the piston.

The crankshaft makes two rotations for every one cycle of the piston. This means that power is created one time for every four strokes. Instead of having two ports that get covered and uncovered a four-stroke motor uses valves.

Typically a two-stroke outboard is lighter than a similar-sized four-stroke engine because the two-strokes method of operation doesnt require a valve train – camshafts valves belts or chains. Since the two-stroke isnt encumbered with a valve train the engine has fewer moving parts. 2-strokes are generally louder than 4-strokes and the higher pitch of the 2-strokes engine can make it unpleasant to hear.

The lubrication system of a 2-stroke motor is less effective at protecting its moving parts which increases the need to replace parts and reduces the motors longevity. The advantage a 2-stroke outboard motor typically had over a 4-stroke outboard motor is that they made power very easily with a small engine package. This engine trait made the 2-stroke a popular engine for chainsaws dirt bike-style motorcycles and outboard boat motors.

In applications in which weight was a primary concern an air-cooled 2-stroke engine was often the logical choice. On average 2 stroke outboard motors are lighter than 4 stroke outboard motors. 2 stroke outboard motors have fewer parts and moving pieces than 4 stroke motors.

For this reason they tend to be lightweight. Today there are numerous changes and improvements taking place in outboard motor manufacturing and design. 2 stroke vs 4 stroke maintenance.

Any 2 stroke is going to be easier to maintain if you are handy with the spanners but could require more regular fixing up if you spank it like you are supposed to. Yes a 4 stroke is a little more expensive to run but even a 4 stroke can be fixed up at home if you like mechanical work. To find an exact anwser to your question is important to know the brand of your outboard motor horse power hp and ehether is a two stroke or four stroke.

Look for a little plate on the motor mounting bracket or also at the crankcase stamped earlier outboard models.