Relatively more fuel to air is known as a "rich" mixture <a href="www.usasmoking.com">Cheap Cigarettes</a>, while the opposite is known as a "lean" mixture. A lean mixture generates more power <a href="www.cheapcigarettesfamily.com">Buy Cigarettes Online</a>, but also generates more heat. Too much heat could damage the engine. A rich mixture generates less power and less heat. Too rich and the engine might quit while you're flying.
The popular twin-needle carburetor has two needle valves. The high speed needle controls the total fuel flow into the engine, and affects the engine's behavior from half to full throttle. The low speed needle tends to have more of an effect from half throttle down to idle <a href="www.cigarettessupermarket.com">Marlboro Cigarettes</a>. Both the low and high speed needles can be richened (counterclockwise turning), or leaned (clockwise turning).
Too lean: very little smoke, max rpm can be heard falling off <a href="www.sellcigarette.com">Marlboro Menthol</a>. Open the needle valve up 20 or 30 degrees from this point. If you have a tachometer, open the needle about 300 rpm less than max.
5) Still at high throttle, perform the pinch test. Briefly pinch then release the fuel tube going into the carb. If the engine momentarily speeds up, then slows back down, you're done. If the engine does not speed up, or quits, then it is too lean; richen the needle some more.
6) Now throttle back to idle; let the engine idle for a couple minutes <a href="www.wholesaleusacigs.com">Newport Cigarettes Carton Price</a>.
7) Now perform another pinch test. This time pinch and hold the line. The engine will want to speed up and die. If it speeds up immediately, it's too lean, richen the low speed needle. It should take 4-6 seconds to speed up and begin to die. Any longer and it's too rich.
8) Also check the throttle transition. With the aircraft secured and engine idling for a couple minutes, advance the throttle quickly to fully open. If the engine hesitates <a href="www.usacigscoupons.com">Tobacco Store</a>, the low speed mixture is too rich.<br/>Related articles:<br/> <a href="http://www.subasepearl.com/pages/forum-thread-view?r=GWLMTW6H69&send_to=%2Fpages%2Fforum">Cheap
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