Page 929 - 2006 HARLEY FLSTCI SERVICE MANUAL

REMEDY See VACUUM PISTON ASSEMBLY which follows. REMEDY Clean piston slides and body or replace piston. REMEDY Clean piston slides and body or replace piston.

Table 4-7. Poor High Speed Performance

Clean or replace. Unclog system. Clean or replace. Repair as required. Adjust, clean or replace. Correct and clear restriction. Clean and clear passages. Adjust float level. Tighten, clean, clear as required. Replace assembly. Table 4-8. Piston Does Not Raise Properly Clear vent. Correct or replace spring. Tighten or replace cap. Reposition diaphragm lip. Replace piston diaphragm assembly. Clean and clear passage. Adjust, clean or replace. Table 4-9. Piston Does Not Close Properly Clean or replace piston. Replace spring.

CHECK FOR Damaged or restricted fuel tank venting system. VACUUM PISTON ASSEMBLY CHECK FOR Diaphragm cap loose, damaged or leaking. Enrichener valve open, not seated or leaking. CHECK FOR 2006 Softail: Fuel System

Inlet system air leak. Dirty or damaged air cleaner element. Accelerator pump inoperative. Vacuum piston assembly malfunction. Enrichener valve not seated or leaking. Restricted fuel supply tract. Plugged bowl vent. Improper fuel level. Loose or plugged main jets or passages. Worn or damaged needle or needle jet. Piston atmosphere vent blocked. Piston binding. Spring binding. Diaphragm pinched at lip groove. Torn diaphragm. Piston vacuum passage plugged. Piston binding. Piston diaphragm ring dirty or damaged. Spring damaged.

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