RedMax CHTZ600 Workshop Manual

3. Examine that the carburetor is sealed.a) Connect a pressure tester to the fuel inlet on thecarburetor. Pump up the pressure to 50kPa.b) Lower the carburetor in a container with gasolineto find leaks more easily.c) No leakage is permitted.4. Connect the fuel hoses (E) and (D) to the carburetor.DABEC5. Connect the throttle wire (C).6. Attach the air filter housing and the gaskets (A) and(B) to the carburetor with the screws.7. Attach the air filter.8. Close the air filter cover with the clips.7.8.4 To adjust the carburetor settingsTo adjust the carburetor means that you adjust theengine to the local conditions such as weather, altitudeand fuel.The carburetor has 3 adjustment controls.• L = low speed jet• H = high speed jet• T = idle adjustmentThe low speed jet and the high speed jet adjust the fuelflow to align with the airflow from the throttle valveopening. Turn the low speed jet and high speed jetclockwise to decrease the quantity of fuel. Turn the lowspeed jet and high speed jet counterclockwise toincrease the quantity of fuel. Less fuel increases theengine speed and a more fuel decreases the enginespeed.Note: Always start with the low speed needle when youadjust the carburetor.The idle speed screw controls the throttle position. Turnthe idle speed screw clockwise gives fast idle speed,turn it counterclockwise gives lower idle speed.The high speed jet and the low speed jet in thecarburetor can only be adjusted with the special tool.Refer toServicing tools on page 12.To adjust the carburetor, use the RPM measuring tool.Refer toServicing tools on page 12. For recommended1108 - 001 - 24.11.2020 Repair instructions - 31