化油器功能及调整
(Function and adjustment of the carburetor)
(1)
风门，冷启动时使用；
(2)
油门；
(3)
怠速调节螺丝；
(4)
低速油针；
(5)
高速油针
1)
Choke arm
used for cold start-up
2)
Throttle lever
3) Idle speed adjust screw
4) Low speed needle
5) High speed needle
6) Fuel inlet nipple
本化油器是
Walbro
特配真空泵膜式双针化油器，
顺时针转动
(3)
怠速调节螺丝将增大怠速转速，
同时要配合（
4
）低速油针一起调整，顺时针转动低速油针减少油量（一般是把油针拧到底再
退回
1.25
圈）
；高速油针
5
（退回
1.5
圈）
;
最好使用转速表来调整，使发动机达到最高转速，
加减速顺畅为最佳。
The RL58 Walbro carburetor comes pre-adjusted to a basic setting. This setting should be
maintained during the initial break-in runs. The standard carburetor settings are as follows:
The high-speed needle valve is set to about 2 1/3 turns out from the fully closed position.
The low speed or idle needle valve is set to about 4 turns out from the fully closed position.
Red Lion uses a high quality, ultra reliable Walbro carburetor which is a special-needle
carburetor with a vacuum pump diaphragm.
1) Start and warm the engine at a low throttle setting and after 15-20 seconds move the
throttle to the fully open position. The engine should accelerate smoothly. We suggest the
use of a tachometer to set the maximum speed. Turning the high speed needle clockwise
will make the engine run leaner and generally faster. But, if the setting is too lean, the engine
will run too hot and rpm and power will be reduced. Typically you should adjust the high
speed needle valve clockwise to obtain maximum RPM, then turn the needle anti-clockwise
5 degrees back.
Note that these adjustments should be made with the engine stopped.
It is very dangerous to make carburetor adjustments when the engine is running.
2) Setting a suitable idle speed involves a combination of the idle speed screw and the low
speed needle valve. You are looking for a reliable low speed idle that makes landing your
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