WARNING

PLEASE READ ALL SAFETY INSTRUCTIONS! Failure to read, understand and follow these instructions could result in personal injury and/or property damage to yourself or others.

Take a few moments to familiarize yourself with the various parts of the engine. DO NOT DISASSEMBLE YOUR ENGINE! Doing so will void your warranty. No exceptions!

The carburetor enables easy adjustment of the idle speed, idle mixture and the high speed mixture.

1.    HIGH SPEED NEEDLE VALVE

Locate an area to install the Remote Needle Valve Assembly using the bracket provided. This may typically be attached on the firewall, cowl, or rear engine mount lug area. This assembly must be in the fuel line between the tank and the carburetor. The line should not exceed five (5) inches in total length.

2.    HIGH SPEED NEEDLE VALVE ADJUSTMENT

This needle valve, located on the Remote Needle Valve Assembly, controls all the fuel that comes to the engine, whether the engine is running at high, mid-range, or idle speeds. It does not affect the low speed  rich/lean setting. The High Speed Needle Valve’s main function, however, is to meter the high-speed fuel mixture.

As a starting point for the High Speed Needle Adjustment, completely close the needle valve (clockwise), then open it (counter-clockwise) three and a half turns. This setting is an average and may require further adjustments. For higher altitudes (3,000 - 4,000 feet), close the needle valve approximately 1/2 turn.

3.    LOW SPEED and MID-RANGE ADJUSTMENT

The rich/lean adjustment is controlled by the “slotted” screw located on the side of the carburetor where the low speed disk is housed. The rich/lean mixture control is set at the factory and may require only a fine adjustment for your application. WARNING: DO NOT RUN THE ENGINE AT A “LEAN” SETTING. This screw only turns 1/4 turn to either the right or left of center. It does not turn all the way around. Turn the screw clockwise to “lean” the engine and counter-clockwise to richen the mixture.

NOTE: Make sure you are holding your airplane firmly to prevent it from lurching forward wen the engine starts. After it starts, maintain your hold until you have reduced the throttle to a low idle speed.

With a full tank of fuel and an ignition battery of no more than 1½ volts, proceed as follows:

1.    With the booster battery disconnected and with the throttle wide open, place finger tip over the carburetor venturi and flip the propeller quickly two or three times, to prime the engine.

2.    Remove fingertip from the carburetor inlet and continue to flip the propeller several times.

3.    Close the carburetor to approximately one-quarter (1/4) open and connect the battery to the glow plug.

4.    Slowly turn the propeller (counter-clockwise) and “feel” for a momentary resistance, which indicates ignition of the mixture in the cylinder.

5.    Quickly flip the propeller to start the engine and, then, disconnect the battery.