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Small Engines

Miscellaneous small engines refer to low-power internal combustion engines (operating on gasoline/petrol), or electric engines. These include chain saws, lawn mowers string trimmers, snow and leaf blowers, wood chippers, and go-karts.

1,382 Questions

Why do small cars have front engine front wheel drive?

Because it makes up for the most compact drivetrain, which leave as much space as possible for the passengers.

What is the Gas oil mixture for efco mt 3700 chainsaw?

not 100% sure but almost all new saw says 50 to 1.but i never run them that lean even if they saw its fine.i mix my stihl 35 to 1.if it doesnt fowl plug i run em heavy,i have a old 1980 saw that has cut 300 cords of wood and never had any work at all except replaced fuel line and filter.

How can a person troubleshoot what is wrong with a snowblower that will not start?

The first step is to make sure there is fuel, and to check for leaks. To check for a leak, attempt to start the blower. Afterward, remove the spark plug to check for wetness. If it is wet, the blower is distributing fuel properly to the plug. The spark plug may need to be replaced if the fuel is not being ignited. If everything seems fine, however, a repairman will need to be called.

What will happen to a plastic boat gas tank when you put ethanol gas in it?

I know over time that gas with ethanol will deteriorate the fuel lines on a boat, because they were not made for ethanol. I do not know, however, what would happen with a plastic boat gas tank. One would assume that if it did destroy the gas can, the government would mandate a warning of some sort. Otherwise, people could get killed.

How much oil do you put in a 49cc mini motorcycle?

Well the first necessary piece of information I would need to know is: Is it a two stroke or four stroke engine? I assume its four stroke as I'm sure you know that you need to mix two stroke oil with petrol and then put it in the tank if it's a two stroke. In that case, 25 to 30ml of two stroke oil to a litre of petrol is perfect. On the otherhand, if it is a four stroke, 300-400 ml of oil should be about right.

How do you shorten the spring on a governor?

A few turns of the spring will need to be removed by cutting, then shaping the cut end into a hook with needle nose pliers. Cut it with a miniature abrasive cut-off disc mounted in a rotary hobby tool, such as a Dremel tool. If you don't have a rotary hobby tool, you can try using a cold chisel, or carefully hold it to the corner of a small grinding wheel. Once the wire is nicked or notched, the spring will break easily at the thin area. Do not try to use wire cutting pliers, as the spring steel is too hard: The cutting edges of the pliers will either break or be notched, ruining them.

Can you run your small engine with oil coming out of exhaust?

Your engine is most likely overfilled with oil. Check your oil and make sure it isn't overfilled. However a little oil coming out the exhaust isn't gonna hurt anything, your just gonna waste a heak of a lot of oil

Why does your temp oil fuel gauge stop working on your jeep wrangler?

The reason for the failure could be a failure in the connection or the gauge itself. Alternatively, the temperature sensor could have failed.

How do you fresh water rinse a Mercury 9.9 outboard motor?

Two options: Tempo 940TFO flush adaptor attaches to the bottom of the antiventilation plate or stick it in a barrel. Both have their pros and cons. Bill Orr, Instructor Marine Service Technician Program Pinellas Technical Education Center 6100 154th Ave. N. Clearwater, Florida 33760 727-538-7167 X 2149 orrwi@pcsb.org

What is the fuel gas mix for a 25 hp mercury outboard?

The 2 stroke, 25 hp Mercury outboard requires a 50:1 ratio, this is roughly one pint of 2 cycle oil, to six gallons of fuel.

Can you jump a ski-doo mach 1 670?

You can jump any ski-doo, provided enough power and the right angles. But is it a good idea? Not unless you know what you're doing, so I do not recommend it, because you can get really hurt.

What causes chainsaw chain to tighten during use?

I am a proffessional Timber faller in Idaho and use Stihlms440,ms460 and ms660 five days a week 7 hours a day in conventional logging operations. The answer to this question has to do with the bar and lubricating system. Most saws now days have an automatic oiler or pump that is enabled only while the saw is running... On your guide bar (if taken off) you will notice a small hole near the powerhead end of the bar. Usually the primary reason for the chain to tighten up is because the lubricating port on the bar ("small hole"as mentioned) is plugged with sadust,saw chips and small woody debris, thus not allowing the oil being pumped to pass through to the guide bar. First I would take a small nail or even a twig and push the debris through the hole. Depending on make and model of the saw and bar there may be two holes. If so clean them both. Now since you have the bar off and in hand you may as well clean between the bar guide rails. (Bar groove) This is most easily is done by using a knife blade. Start up by the bar tip (Sprocket) insert the knife blade into bar groove and carefully pull through the bar groove all the way to the opposite end of the bar. You may have to repeat this step two or three times to completelly break free all of the debris from within the bar groove. Do this carefully and with gloves. complete this on both sides of the bar. This will break loose and woody material that may have clogged the bar groove. Re-assemble the saw,adjust chain tensioner so your chain is at the propper tension and give it a whirl.

Why won't Yard Machine by MTD Model 2M1 snowblower shut off when key removed?

More than likely the wire that runs from the ignition switch to the kill switch is disconnected, loose, or broken. The wire starts at the OFF position of the ignition switch and connects to another wire that shuts off the engine.

Do you fill Jack oil into the screw on the side of floor jack?

Take top cover off of jack and there should be a rubber plug or a single screw that you take out to fill jack .

What do the dash lights on a skidoo formula plus mean?

The dash lights on a Ski-Doo Formula Plus typically indicate important information such as engine temperature, oil level, and battery status. It is important to consult the owner's manual for specific information on what each light represents to ensure proper maintenance and troubleshooting.

How do you make a balloon powered car?

Make up the car body and turn upside down. Cut the bendy

section off the straws. Tape the straws onto the base of the

body making sure they are parallel and about 2cm from the front

and back edges.

2. Push a white stick through each straw. Then push a wheel onto

each end of the sticks. The white sticks should be able to spin

freely with the wheels firmly attached.

3. Blow up the balloon a few times to stretch it. Fit the balloon over

the end of one of the straw off-cuts and secure in position with

tape. This is for blowing up the balloon when the car is finished.

4. Very carefully make a hole in the back of the car body using the

pencil. Push the straw that is fixed to the balloon through the

hole in the car body so that the balloon is inside the car body

and the straw is sticking out of the back. Use tape, plastercine

or blu-tac to fix the straw into position.

5. Blow up the balloon, pinch the straw to stop the air escaping

and place the balloon car on a smooth surface.

What is the gas oil mix for a 1985 ski doo citation?

Its Either 40:1 or 50:1 but you should consult your local Ski-Doo dealer just to be sure

What is the cop of vapour compression cycle?

3. Vapour Compression Refrigeration Cycle

Vapor-compression refrigeration is one of the many refrigeration cycles available for use. It has been and is the most widely used method for air-conditioning of large public buildings, offices, private residences, hotels, hospitals, theaters, restaurants and automobiles. It is also used in domestic and commercial refrigerators, large-scale warehouses for chilled or frozen storage of foods and meats, refrigerated trucks and railroad cars, and a host of other commercial and industrial services. Oil refineries, petrochemical and chemical processing plants, and natural gas processing plants are among the many types of industrial plants that often utilize large vapor-compression refrigeration systems. Refrigeration may be defined as lowering the temperature of an enclosed space by removing heat from that space and transferring it elsewhere. A device that performs this function may also be called a heat pump.

The vapor-compression uses a circulating liquid refrigerant as the medium which absorbs and removes heat from the space to be cooled and subsequently rejects that heat elsewhere. Figure 1 depicts a typical, single-stage vapor-compression system. All such systems have four components: a compressor, a condenser, a Thermal expansion valve (also called a throttle valve), and an evaporator. Circulating refrigerant enters the compressor in the thermodynamic state known as a saturated vapor and is compressed to a higher pressure, resulting in a higher temperature as well. The hot, compressed vapor is then in the thermodynamic state known as a superheated vapor and it is at a temperature and pressure at which it can be condensed with typically available cooling water or cooling air. That hot vapor is routed through a condenser where it is cooled and condensed into a liquid by flowing through a coil or tubes with cool water or cool air flowing across the coil or tubes. This is where the circulating refrigerant rejects heat from the system and the rejected heat is carried away by either the water or the air (whichever may be the case).

The condensed liquid refrigerant, in the thermodynamic state known as a saturated liquid, is next routed through an expansion valve where it undergoes an abrupt reduction in pressure. That pressure reduction results in the adiabatic flash evaporation of a part of the liquid refrigerant. The auto-refrigeration effect of the adiabatic flash evaporation lowers the temperature of the liquid and vapor refrigerant mixture to where it is colder than the temperature of the enclosed space to be refrigerated.

The cold mixture is then routed through the coil or tubes in the evaporator. A fan circulates the warm air in the enclosed space across the coil or tubes carrying the cold refrigerant liquid and vapor mixture. That warm air evaporates the liquid part of the cold refrigerant mixture. At the same time, the circulating air is cooled and thus lowers the temperature of the enclosed space to the desired temperature. The evaporator is where the circulating refrigerant absorbs and removes heat which is subsequently rejected in the condenser and transferred elsewhere by the water or air used in the condenser.

To complete the refrigeration cycle, the refrigerant vapor from the evaporator is again a saturated vapor and is routed back into the compressor.

Refrigeration Process

Process Description

1-2s: A reversible, adiabatic (isentropic) compression of the refrigerant.

The saturated vapour at state 1 is superheated to state 2.

wc = h2s h1

2s-3: An internally, reversible, constant pressure heat rejection

in which the working substance is desuperheated and then condensed

to a saturated liquid at 3. During his process, the working substance

rejects most of its energy to the condenser cooling water.

qH = h2s h3

3-4 An irreversible throttling process in which the temperature and

pressure decrease at constant enthalpy.

h3 = h4

4-1 An internally, reversible, constant pressure heat interaction

in which the working fluid is evaporated to a saturated vapour

at state point 1. The latent enthalpy necessary for evaporation

is supplied by the refrigerated space surrounding the evaporator.

The amount of heat transferred to the working fluid in the evaporator

is called the refrigeration load.

qL = h1 h4

How do barnacles damage boats?

  1. Barnacles stick to the boat hull and grow creating a sort of skin over the hull. This in turn slows boat by taking away smoothness of hull and adding weight. Barnacles get knocked off and fall off , which pulls outer hull coating off allowing rot to get in.

How old do you have to be to drive a snowmobile without a adult?

Well it depend on where u live, Where i live u must be 14 years of age, and people younger may go with a parent supervising,

How fast can 300cc go carts go?

150-250 KPH but why that's to fast and uses a lot of gas and also u would need a Go Kart perm