The Kawasaki KLR650 is a versatile dual-sport motorcycle known for its reliability, durability, and performance both on and off-road. Among its many components, the doohickey is a small but crucial part of the rear suspension linkage that affects the bike’s handling and ride quality. Understanding how to adjust the doohickey KLR650 correctly can improve suspension performance, prevent premature wear, and enhance overall riding comfort. For riders who frequently carry loads, ride off-road, or experience sagging suspension, proper adjustment is essential. This guide provides a detailed, step-by-step approach to adjusting the doohickey on a KLR650, along with tips to maintain suspension health and optimize riding performance.
Understanding the Doohickey KLR650
The doohickey, often referred to as the rear suspension linkage, connects the swingarm to the shock absorber. Its primary function is to alter the leverage ratio of the rear suspension, which directly affects sag, stiffness, and overall ride dynamics. On the KLR650, changing the doohickey can help accommodate heavier riders, passengers, or luggage, while maintaining proper geometry and comfort. Many riders overlook this small component, but its correct adjustment can significantly improve off-road handling and on-road stability.
Symptoms of Incorrect Doohickey Adjustment
Before attempting adjustments, it is important to recognize the signs that the doohickey KLR650 may need attention
- Excessive rear sag, especially under load or with a passenger.
- Bottoming out of the rear suspension on rough terrain.
- Harsh or overly stiff suspension response.
- Reduced handling performance or instability at higher speeds.
- Uneven tire wear caused by improper suspension geometry.
Tools and Equipment Needed
To adjust the doohickey safely and effectively, gather the following tools and equipment
- Socket wrench set and torque wrench
- Jack or motorcycle lift to support the bike
- Service manual for KLR650 (for torque specifications and diagrams)
- Rubber mallet or soft hammer
- Grease or lubricant for pivot points
- Measuring tape or suspension sag tool
Step-by-Step Guide to Adjust the Doohickey KLR650
Step 1 Prepare the Motorcycle
Ensure the bike is on a stable, level surface. Use a jack or motorcycle lift to raise the rear wheel off the ground. This allows the suspension to move freely and ensures accurate adjustment. Remove any luggage or accessories that might add weight, as adjustments should be made under normal riding conditions.
Step 2 Inspect the Current Doohickey Setup
Examine the doohickey and rear suspension linkage for wear, damage, or loose bolts. Check for play in the bearings and pivots, as worn components can affect suspension performance. Cleaning the area of dirt and debris is recommended to prevent contamination during adjustment.
Step 3 Determine the Desired Adjustment
The doohickey alters the rear suspension leverage ratio. Installing a taller or shorter doohickey will raise or lower the rear ride height. Decide whether you need more sag for comfort, or stiffer suspension for handling heavy loads. Consult the KLR650 service manual for recommended measurements and adjustments based on rider weight and load.
Step 4 Remove the Old Doohickey
Using a socket wrench, carefully remove the bolts securing the doohickey to the swingarm and shock linkage. Keep track of washers, spacers, and hardware for reinstallation. Gently tap the linkage with a rubber mallet if it is tight, but avoid using excessive force that could damage components.
Step 5 Install the New or Adjusted Doohickey
Position the new doohickey or the same doohickey in the adjusted orientation, aligning it with the pivot points on the swingarm and shock. Insert the bolts and hand-tighten to hold the linkage in place. Ensure all washers and spacers are correctly positioned according to the service manual specifications.
Step 6 Torque Bolts to Specifications
Use a torque wrench to tighten the bolts to the manufacturer’s recommended settings. Proper torque ensures the doohickey functions correctly and prevents premature wear or loosening. Avoid over-tightening, which can damage the linkage or bearings.
Step 7 Lubricate Pivot Points
Apply grease or a light lubricant to the pivot points of the doohickey and linkage. Proper lubrication reduces friction, prevents corrosion, and ensures smooth suspension movement over time. Avoid over-greasing, which can attract dirt and grime.
Step 8 Check Suspension Sag and Function
Lower the bike from the lift and measure the rear suspension sag while seated with the intended load. Compare the measurement to recommended sag values in the service manual. Adjust further if necessary. Test the suspension by compressing it manually and taking the bike for a short ride to evaluate comfort and handling.
Tips for Maintaining Your Doohickey KLR650
- Regularly inspect the doohickey and rear linkage for wear and play.
- Clean and lubricate pivot points every few thousand miles or after off-road rides.
- Check torque on all bolts periodically, especially after heavy or off-road use.
- Use quality replacement doohickeys or linkage parts to ensure durability.
- Document your adjustments to fine-tune suspension settings over time.
Benefits of Proper Doohickey Adjustment
Adjusting the doohickey on a KLR650 correctly offers multiple benefits
- Improved ride comfort and handling on different terrains.
- Enhanced suspension performance under load, with passengers, or with luggage.
- Reduced wear on tires, suspension components, and frame.
- Greater confidence and control for off-road and long-distance rides.
- Ability to tailor suspension settings to individual riding style and preferences.
Common Mistakes to Avoid
- Adjusting without supporting the bike properly, which can lead to inaccurate sag measurements.
- Over-tightening or under-tightening bolts, causing damage or loose linkage.
- Failing to check pivot points for wear before adjusting.
- Ignoring manufacturer torque specifications or installation instructions.
- Skipping lubrication, which can lead to noisy or stiff suspension movement.
Adjusting the doohickey KLR650 is a straightforward but important task that can significantly enhance your motorcycle’s suspension performance and overall riding experience. By understanding the function of the doohickey, following proper adjustment procedures, and maintaining the linkage regularly, riders can improve comfort, stability, and handling in a variety of conditions. Whether you ride on highways, off-road trails, or carry passengers and cargo, proper doohickey adjustment ensures your KLR650 remains reliable and responsive. By taking the time to adjust and maintain this small but essential component, you maximize both the longevity of your bike and the enjoyment of your rides.