Technical information
Tech tips
For correct piston play, bore sizes and wear limits refer to the OEM service manual. If you are using special pistons and/or cylinders follow the manufacturer instructions for bore sizes.
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The following information and instructions are for your use, so your warranty will by in effect. No warranty can be in effect if these instructions are not followed. Whenever any component of a generator charged electrical system is serviced it is necessary to re-polarize the complete system, making sure it has the correct polarity so the system will charge in the right direction. If the system is put into service with the wrong polarity it may result in burned relay points, a dead battery and damage to both the regulator and generator.
Instructions
- To polarize a generator system with a mechanical regulator, momentarily connect a jumper wire of adequate gauge (a battery cable is ideal) between the “bat” and the “gen” terminal on the regulator after all wires have been properly connected and before starting the motor.
- To polarize a generator system with electronic regulator/ rectifier. Before mounting the generator of the vehicle, place the generator on a non conducting work surface (like a wooden bench) and connect the positive terminal of a battery to the armature terminal of the generator. Then momentarily “flash” the negative battery terminal to the generator field terminal.
The oil system of Harley-Davidson changed between the Evolution and Twin Cam models. On Evolution models the oil filter system is in the return section and uses a 30 micron filter. On Twin Cam models the oil filter system is on the pressure side and uses a 10 micron filter. Oil filters can not be changed over!
The zinc-chromate primer finish, on some of our tanks, is provided for protection of the tanks during shipment and storage. It is not recommended as a primer finish for paint applications without proper surface preparation. As with any fuel tank, particularly one where custom paint is to be applied, all the tanks must be pressure tested, then cleaned and sealed with tank sealer (ZPN 752900 & 752903 / 752904) before painting, to protect the final finish and prevent internal rust during winter storage.
Except where mentioned differently, all exhaust systems, mufflers, dragpipes, etc. shown in our catalog, are for closed course competition or in show competition only. They will not meet legal noise standards.