Name Gurtner Main Jet 74 Item No. LHDG-074 Brand Gurtner S.A Jet Size 074
Always start off with a too-large main jet when going about jetting your carburetor. At throttle wide open, the engine should start to sputter. Decrease jet size in steps of 5 until your engine is running fine. Finally, fine-tune settings with intermediate sizes. Attention - a too-small jet will make the mixture too lean and can lead to piston seizure!
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