MCCULLOCH SUPREME 300B, 30CC
Owner's Manual

CAUTION! Grip the knob of the starter with one hand and hold the machine in a stable position with the other. (Take care not to wind the starter string around your hand) and pull slowly until you encounter some resistance, then pull the cord sharply and forcefully (to start the engine when cold or warm follow the procedures described). CAUTION! Do not pull the starter cord all the way and do not release it abruptly against the machine as this could damage it. Startup of cold engine � H1. Stop switch (A) turned to I opposite the �STOP� mark. � H2. Turn the fuel enrichment lever (B) to the closed position. � H3. Pump by pressing several times on the bulb (C) until you see the fuel flow back into the tank through the tube (D). Pull the starter cord until the machine starts. Let the engine run a few seconds holding the brush cutter still. Grasp the control grip firmly and

accelerate, automatically the enrichment lever will return to its original position. CAUTION! The cutting devices are now rotating. Startup of warm engine � H1. STOP switch turned to I (START). Throttle trigger lever in minimum position (released). � H4. Enrichment lever (B) in original position. � H3. Pump by pressing several times on the bulb (C) until you see the fuel flow back into the tank through the tube (D). Pull the starter cord. Stopping the engine � H5. Turn the stop switch (A) to O (STOP). CAUTION! After stopping the engine the rotating parts, blade or nylon string head, keep spinning by inertia for a few seconds. Grip the machine firmly until they stop. CAUTION! In case of emergency the above delay can be abbreviated by scraping the blade supporting cup parallel on the ground.

I. Carburetor adjustment
Your machine can be equipped with a low emission carburetor. We recommend that you have any adjustment of the carburetor made exclusively by an authorized service center, which disposes of special equipment for ensuring the best performance with the lowest emissions. To adjust the speed to the minimum, turn the screw marked (T) as shown: With the engine running and well warmed up, turn the screw (T) gently clockwise, until the engine rotates at regular speed (stead noise), without the cutting devices in motion. If the cutting devices are moving, turn the screw (T) gently counterclockwise until you obtain the proper adjustment. The correct minimum speed is shown in the instruction manual in the paragraph of technical data. CAUTION! All the above adjustments should be made with the cutting devices correctly installed. CAUTION! Start the brush cutter in a flat place. During startup stand in a stable position. Make sure the blade or nylon string head do not touch the ground or any obstacles. The warranty may be invalidated due to erroneous adjustments made by personnel not belonging to authorized service centers.

L. Routine maintenance
Check periodically to see that all the screws in the machine are securely fastened in place. Replace damaged, worn, cracked or bent blades. Always make sure the blade or nylon string head is correctly installed and the nut holding the blade is tight. L1. Cleaning the air filter (At least every 25 hours of work). A clogged filter causes alteration of the carburetor adjustment, reducing power and increasing fuel consumption, as well as causing difficulties in startup. Open the cover on the filter as shown in 8 - ENGLISH the figure by pressing in the point indicated by the arrow for release. Clean the inside of the filter housing thoroughly (fig. L2). The filter can be cleaned using gentle jets of compressed air. For more thorough cleaning it can be washed in soapy water. L3. Gearbox Every 50 working hours add grease for high speed gears in the gearbox, through the hole (C).