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Confirm carb size
and routing
or wrong for the damper setup
Universal / Custom
and main cables before blaming the relay
1978 Yamaha XS650 Petcock Rebuild Kit Transmission Confirm carb sizePetcock Rebuild Kit. This petcock part controls or seals fuel flow at the tank outlet, including ON OFF RESERVE function where used. Choose this petcock rebuild kit when the petcock leaks, will not shut off, has poor reserve flow, or the outlet fittings are damaged. Fitment Compatibility Fits Yamaha: Yamaha XS360 (1976 77) Yamaha XS400 1977 Yamaha SR500 (1978 81) Yamaha XS500 1978 Yamaha XS650 1978 Yamaha XS750 (1977 79) Yamaha XS1100 (1978 81)