FIAT SPIDER-2000 OWNER'S MANUAL Pdf Download. View and Download Fiat Spider-2000 owner's manual online. Spider-2000 Automobile pdf manual download. Also for: 1981 spider 2000. FIAT 124 SPIDER MAINTENANCE AND MODIFICATION Pdf FIAT 124 Spider Engine Maintenance + Modification Figure 37: Idle speed controls on the Spider 2000 Lock the accelerator stop screw with the retaining nut. Use the idle speed screw (1) to set idle at 850 to 900 RPM on manual transmissions and 700 to 800 RPM on automatic transmissions.