model easier and keeps the engine running reliably, and allows smooth acceleration to full
power. If your engine transitions from idle to full speed smoothly and quickly you do not need
to adjust the low speed needle valve. Simply turning the Idle speed adjusting screw
clockwise will increases the idle speed or turning it anti clockwise will reduce the idle speed.
If the engine does not smoothly increase RPM from idle please note the following. If the
engine stops or hesitates due to lack of fuel when you increase the throttle, the engine is too
lean and you need to open the low speed needle valve (anti clockwise). If the engine coughs
and splutters and may blow excess fuel from the muffler as you increase the power, then the
engine is too rich. You should turn the low speed needle valve clockwise. Please use small
adjustments (5 degrees per time). Note that these adjustments should be made with the
engine stopped. It is very dangerous to make carburetor adjustments when the
engine is running.
The low speed needle valve is set to about 1 1/4 turns from the fully closed position
The High-Speed needle valve (see 5) is about 1 1/2 turns from the fully closed position.
For the best performance the engine should accelerate and decelerate smoothly and idle
reliably. Please follow the instructions above and make the necessary adjustments to
achieve this.
调整化油器高速油针时请注意：混合气调整过稀将导致发动机严重过热和火花塞烧毁。燃烧后
火花塞的颜色应该是黄色。说明混合气浓度比较合适。
Caution for adjustment of the high speed needle:
A lean gas mixture will result in the engine overheating and burning of the spark plug. Please
pay attention to the color of your spark plug when you adjust the high speed needle. A yellow
color is the right color for proper gas mixing at the ignition point.
引擎的保养及问题诊断(Engine Maintenance and Troubleshooting Guide)
·引擎不要长时间低速运行，否则可能导致火花塞严重积炭
Do not run the engine at an idle speed for too long, or spark plug might become
carbonized and reduce the engines performance.
·保持引擎表面清洁，保证散热良好
Be sure to keep the engine surfaces clean to ensure good heat dissipation.
·每次飞行后需要注意的：
检查引擎是不是过热。火花塞燃烧是否正常。所有螺丝螺母是否松动。所有管线是否正常。
特别注意：在一定周期内清洁化油器里面的燃油滤网，否则将引起油针调节失灵，引擎工作
不稳定等情况。
After each flying session you should note that:
·Check the engine has not overheated
·Check all screws and nuts are tight.
11
To Next Page
Loading...