Colortune Fuel System Analyzer, Model# 19-4074-100

Tune carburetors and fuel systems with the Colortune visual fuel system tester/analyzer by looking directly into the engine as its running. You-ll see the air/fuel mixture strength by combustion flame color, allowing you to adjust the carburetor for maximum performance and fuel economy without guessing. Colortune can also be used for engine and ignition system fault finding. Fits all 2- or 4-stroke engines with 14mm spark plugs. Complete kit includes: See-through spark plug Diagnosis chart and instructions explaining combustion flame colors Cleaning brush 2-pc. viewscope with hinged plastic metallic mirror 6in. high-tension spark plug extension lead Fits all 2- or 4-stroke engines with 14mm spark plugs Model 19-4074-100