How to adjust the air/fuel mixture on the IKRA IBF 25-1 brushcutter?

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The IKRA IBF 25-1 brushcutter is equipped with a factory pre-set carburetor optimized to operate with a specific fuel/oil mixture. Unlike some equipment, this model is not designed for manual carburetor adjustment by the user. Any modification of the settings may damage the engine and void your warranty.

Preparation of the fuel mixture (key element)
The secret to optimal operation lies in the correct preparation of the mixture. The 2-stroke engine requires a fuel/oil mixture at a ratio of 40:1. Use the following proportion table:

For 1 liter of unleaded gasoline: add 25 ml of 2-stroke oil
For 5 liters of unleaded gasoline: add 125 ml of 2-stroke oil

Pour the mixture into an approved container and shake the container well to ensure proper homogenization. Never fill the tank (capacity 500 ml) when hot with the engine running.

Essential points to respect
Only use high-quality mineral oil specially formulated for air-cooled 2-stroke engines. Using an incorrect mixture ratio will result in a loss of warranty. Do not store the fuel mixture for more than 90 days; prepare it as needed. Before each use, ensure that the choke lever is in the “RUN” position for normal operation.

If the engine has difficulty starting, refuses to operate at full power, or misfires, first check the fuel mixture ratio and the condition of the spark plug. If the problem persists despite a correct mixture, contact an authorized IKRA service center. Do not attempt to adjust the carburetor yourself.

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