HD Tech Bulletin November 6, 2000 TC-88 Oil Pump Alignment It has been observed that some TC-88 engines are experiencing oil in the air cleaner when the vehicle is driven at high speeds. The correction for this condition is to align the oil pump. This is accomplished using the Evo2 tappet block alignment screws, Part... Read more

January 4, 2005 Horn Issues Recently we have seen a high number of horn warranties. Upon inspection of the returned horns there was no trouble found on many of them. Here are some tips on diagnosing possible horn issues: 1. Horn volume is variable and will be different between two motorcycles. Perceived low horn tone is... Read more

July 22, 2004 2005 Quick Facts 1. All 2005 Big Twin & V-Rod EFI models have a new ECM, which requires a 2005 calibration. Do Not install an earlier calibration in a 2005 motorcycle. This new ECM has an updated microprocessor with expanded memory and will retrofit back to 2001 Delphi EFI systems when used with updated calibrations.... Read more

A new improved motor mount will be introduced as a running change on a 06 Touring models. It's been reported that the replacement "old style" mount is not standing up to actual use and coming apart in very few miles and colapse shortly after installation, in some cases less than a thousand miles. The proper replacement (updated) is... Read more

TT224 – December 12, 2005 TSSM Enhancements The TSSM has changed to a “D” version part number for the 2006 model year and will retrofit back to 2000 model year motorcycles. The following enhancements have been made: 1. In storage mode the system monitors for vehicle motion only, and will set off the alarm when the vehicle is moved.... Read more

M1057 Service bulletin ELECTRONIC FUEL INJECTION Intermittent High Idle Harley-Davidson has received reports from dealers that electronic fuel injection equipped motorcycles were experiencing intermittent high idle speeds, usually after a hot restart. Inspection of returned parts has shown that the idle speed control... Read more

TT219 – November 07, 2005 Diagnostic Trouble Code Information 1475, 1477, 1478 codes? These are Screamin’ Eagle Active Performance Muffler kit diagnostic trouble codes. Code descriptions and diagnostic flow charts are covered in the instruction sheet J03535. A 1477 code will be logged if an Active Performance... Read more

July 5, 2005 ECM Running Change In the interest of continuous improvement the current ECM (p/n 32534-05) will supersede to a new version (p/n 32534-05A). The new ECM has internal changes to support the 2006 model year product and will retrofit. However, your current inventory of ECMs will not work on 2006 models. This change... Read more

June 21, 2005 Front Brake Light Switch Installation Procedure There has been an increase of warranty claims for the front brake light switch, part number 71590-96. Of the switches returned for warranty ~90% have the button/tip broken off, this breakage can only happen when the person installing the right side controls back on... Read more

May 31, 2005 Screamin’ Eagle® Pro EFI Race Tuner If you are having an issue programming an ECM with the EFI Race Tuner when you are out at the track here are some helpful tips to use: • Verify that the VIN number stored in the ECM exactly matches the motorcycle. If it is incorrect the EFI Race Tuner will not program the ECM. ... Read more