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2,483 bytes added ,  16:17, 2 January 2012
Created page with 'File:lighterstill.jpgright|frame ==Origin== [http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle Eng...'
[[File:lighterstill.jpg]][[File:Reserve.jpg|right|frame]]

==Origin==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Anglo-French ''reserver'', from [[Latin]] ''reservare'', [[literally]], to keep back, from ''re''- + ''servare'' to keep
*[http://en.wikipedia.org/wiki/14th_century 14th_century]
==Definitions==
*1a : to hold in reserve : keep back <reserve grain for [[seed]]>
:b : to set aside ([[part]] of the consecrated elements) at the [[Eucharist]] for [[future]] use
:c : to retain or hold over to a [[future]] time or place : defer <reserve one's [[judgment]] on a [[plan]]>
:d : to make [[legal]] reservation of
*2: to set or have set aside or apart <reserve a hotel room>
==Description==
In motorcycles and cars, [[fuel]] '''reserve''' is the extra fuel reserved by the manufacturer in the fuel tank of a car or motorcycle before the main fuel capacity runs out.

In motorcycles, when the main fuel runs out, the rider has to manually turn the reserve knob, usually located in the left part of the engine, to the reserve [[position]]. This allows the rider to use the remaining fuel.

The [[purpose]] of the fuel reserve is to serve as a [[warning]] to the rider that fuel is low, as many motorcycles do not have fuel gauges and determining the fuel remaining is [[difficult]]. When the main fuel is [[exhausted]], the motor will stop running, prompting the rider to [[change]] the position knob to continue riding with a known small [[quantity]] of fuel. Often when a rider notices the motor start to sputter, he can [[access]] the reserve before the engine shuts down.

In most cases, the main tank and the reserve tank are actually the same tank, but there are two outlets through which the [[fuel]] may leave. One outlet is located a short distance above the other. When the fuel selector is not set to the reserve [[position]], the fuel will flow from the upper hole, and will stop [[flowing]] when the fuel level gets below the upper hole. When the selector is on reserve, the lower hole will be used, which allows all the fuel to be drawn from the tank.

Because in most cases, the reserve setting [[simply]] allows [[access]] to all the fuel, rather than a [[dedicated]] tank, the reserve selection allows the rider to deplete the main fuel supply as well as the reserve. This causes no [[harm]], except that they may run out of fuel without [[warning]].

[[Category: General Reference]]

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