Harley Davidson Dyna evolution 1991-1998. Service manual — page 2

Adjustable Wrenches
An adjustable wrench can be adjusted to fit nearly any nut or bolt head which has clear access around its entire perimeter. Adjustable wrenches are best used as a backup wrench to keep a large nut or bolt from turning while the other end is being loosened or tightened using a proper wrench. See Figure 31.

Adjustable wrenches have only two gripping surfaces which makes them more subject to slipping off the fastener and damaging the part and possibly your hand. See Box-end, Open-end and Combination Wrenches in this chapter.

These wrenches are directional; the solid jaw must be the one transmitting the force. If you use the adjustable jaw to transmit the force, it will loosen and possibly slip off. Adjustable wrenches come in all sizes but something in the 6 to 8 in. range is recommended as an all-purpose wrench.

Socket Wrenches

This type is undoubtedly the fastest, safest and most convenient to use. Sockets which attach to a ratchet handle (Figure 32) are available with 6-point or 12-point openings and 1/4, 3/8, 1/2 and 3/4 in. drives. The drive size indicates the size of the square hole which mates with the ratchet handle.

Torque Wrench

A torque wrench (Figure 33) is used with a socket to measure how tightly a nut or bolt is installed. They come in a wide price range and with either 3/8 or 1/2 in. square drive. The drive size indicates the size of the square drive which mates with the socket.

Impact Driver

This tool makes removal of tight fasteners easy and eliminates damage to bolts and screw slots. Impact drivers and interchangeable bits (Figure 34) are available at most large hardware and motorcycle dealers. Do not purchase a cheap one as they do not work as well and require more force than a moderately priced one. Sockets can also be used with a hand impact driver. However, make sure the socket is designed for use with an impact driver. Do not use regular hand type sockets, as they may shatter during use.

10. Never attempt to repair your machine with the engine running except when necessary for certain tune-up procedures.

11. Check all of the machine components and hardware as described in Chapter Three, especially the wheels and the steering.



Operating Tips

1. Avoid dangerous terrain.

2. Keep the headlight, turn signal lights and taillight free of dirt.

3. Always steer with both hands.

4. Be aware of the terrain and avoid operating the bike at excessive speed.

5. Do not panic if the throttle sticks. Turn the engine stop switch to the OFF position.

6. Do not tailgate. Rear end collisions can cause injury and machine damage.

7. Do not mix alcoholic beverages or drugs with riding—ride straight.

8. Check your fuel supply regularly. Make certain your fuel supply will permit you to arrive at the next fuel stop.