Prior to servicing any component of the fuel injection system, the fuel pressure must be relieved. If fuel pressure is not relieved, serious injury could result.
- Disconnect the negative battery cable.
- Loosen fuel filler cap to relieve fuel tank pressure.
- The internal constant bleed feature of the Model 220 TBI unit relieves fuel pump system pressure when the engine is turned OFF . Therefore, no further action is required.
Allow the engine to sit for 5-10 minutes; this will allow the orifice (in the fuel system) to bleed off the pressure.
- When fuel service is finished, tighten the fuel filler cap and connect the negative battery cable.