Tech & Setup Tips

CASTER, CAMBER, TOE-IN, ADJUSTMENT DIRECTIONS

Before you install the upper a-arms on to the chassis be sure to adjust the hiem joints to the specifications provided, depending on the model of your ATV the amount to adjust is listed below, note that you should also measure the shaft on all 4 of your hiem joints on both the left side and the right side to be sure that the amount of shaft, or ‘threads showing’ is truly an even measurement.

LTR450 TRX450 YFZ450

4 front / 1 rear 7 front / 2 rear 4 front / 4 rear

Now that the hiem joints are close to where they need to be, you must have the ATV on level ground, lock the front brake with a Walsh Race Craft front brake strap, be sure that the tire pressure is set properly and take the front bumper off, before you move on to making any more adjustments.

Setting the ride height is very important in order to be sure that your ATV is level from the get-go, start by placing your second person on the ATV with the bars straight in the center, settle the front end by kneeling on the bumper mount with about 50-100 lbs of down force. Then steer the handle bars from the extreme left to the extreme right and back to center. Take the weight off the bumper mount, then steer it once more to the extreme right and back to center.

To determine the ride height for the rear end measure from directly in front of the foot peg at the chassis down to the floor. To determine the ride height for the front end measure from directly at the forward most area of the chassis where it is still flat, behind the lower a-arm mount. Rear ride height should be anywhere from 6.5” - 7.25”. Front ride height should be anywhere from the same as the rear to 1/2” higher. Now you can take your person off the ATV.

First step for adjusting the caster is to turn the handle bars to the extreme left to fully expose the ball joints and place your ‘framing’ square flat to the ground and set it up to the edge of the lower ball joint cup. Now utilize your ruler and measure from the edge of the ball joint cup to the outside edge of your square, do this on the lower and upper a-arm.

The way to mathematically determine the caster measurement is to subtract the lower measurement from the upper measurement, you should end up with about 1”, ideally your measurement should be between .625” / 1.125”.

When you are adjusting the camber BE SURE to make the same amount of turns to both hiem joints so that you will not change the caster. To measure the camber you will need to align the wheels straight, use a line on the floor or something to judge from that the wheels are truly straight. Then take your ‘framing’ square flat to the ground and set it up to the outside of the tire and measure the distance from the edge of the square and the sidewall of the tire. Ideally this should measure between 0 and 3/4”.

Please note that in this procedure you will need to be sure that whatever you do to the right side also do to the left side. Now take your tie straps and connect from the handle bar grip to the rear grab bar and the same to the other side, this will keep your wheels where you want them to be, measure like in the picture to make sure that they are the same on each side. Place your second person on the ATV again. Find the center of the front tire and with your sharpie mark the center of the tire on the sidewall.

Now you will need to make sure that the front wheels are even with each other before you adjust the toe-in and you do this by measuring from the center of the tire to the opposite lower front bumper mount. NOTE you will be going from the front of the front tires to the back of the front tires numerous times. With the tape measure set it across the front of the 2 front tires at the sidewall, do the same to the back side of the front tires and subtract the 2 numbers the difference between the 2 will determine your toe-in. Be sure to verify that the original X measurement is the same as when you first set it, if not you will need to even these settings again.

Kawasaki

KTM

Suzuki

Yamaha

Walsh