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The motor does not start
• Did you draw in fuel with the manual pump for starting?
• Was the choke set for the start (choke lever all the way at the bottom)?
• Was the choke set too long? The engine may have been flooded.
Remove the spark plug in this case. Carefully dry the spark plug with compressed air. Hold a cloth above the engine
cylinder and pull the cable pull starter several times to remove excessive fuel from the combustion chamber. Insert
the spark plug again and start again without choke. If the motor does not start up again after the tenth attempt, try
the process again with the choke set.
• Is the electrode distance of the spark plug correct (target distance 0.7 mm)?
• Has the spark plug been in use for a longer time or might it be worn? In doubt, check the starting attempt with a new
spark plug.
• Are all fuel lines OK? Is the manual pump used to suck off fuel?
• The carburettor settings are incorrect. Observe that the carburettor is already correctly pre-set upon delivery; turning
the adjusting screws therefore is not required for initial commissioning. Only during or after the breaking in process
must careful changes be performed. Even slight turning of the adjusting screws will have large effects!
• Did you fuel up on the right fuel? Only use a 1:25-two-stroke mix (1 part two-stroke oil, 25 parts Super- or Super
Plus-fuel). Only fully synthetic two-stroke oil must be used as oil.
The vehicle does not stop when the throttle/brake lever at the transmitter is released
• Adjust the throttle/brake function neutral position at the transmitter. If the trim path is not sufficient, check the position
of the servo arm on the throttle/brake servo and its screw connections.
• Check the linkage between the throttle/brake servo and carburettor/brake.
• The vehicle is too far away and outside of the range of the transmitter. Never point the transmitter aerial directly at
the model. This decreases the range.
Program the fail-safe correctly; observe the operating instructions for the remote control system.
Vehicle slows down
• The drive is blocked by leaves, grass, etc.
• The carburettor setting is too lean (engine is weak and possibly overheated). Set the carburettor richer.
• The air filter is contaminated strongly. This makes the carburettor setting too rich (motor stutters and does not or
only very slowly pick up speed). Clean or replace the air filter. Remember to oil the air filter again with air filter oil to
protect the engine from dust.
• The coupling has overheated (or is worn) because it was run under partial load for too long.
The servos show only slight or no reaction; the range between transmitter and vehicle is very short
• Is the receiver battery is weak or discharged? Charge the receiver battery or replace it with a new, fully charged
one.
• Are the batteries or rechargeable batteries in the transmitter weak or flat? Replace them with new batteries or fully
charged rechargeable batteries.
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