Motion Pro 08-0336 - Manual

INSTRUCTIONS
Process Black
White White/Black MOTION PRO, INC. LOGO
Motion Pro, Inc.
867 American Street
San, Carlos, CA 94070
Tel: 650.594.9600 Fax: 650.594.9610
www.motionpro.com
Instructions for Motion Pro 08-0336 Folding Sag Scale
Knob
Guide Pin
Assembly
Unfold your Motion Pro Sag Scale and thread the knob into the guide pin through the slotted area.
Rear Suspension
1) Place the motorcycle on a stand that allows the rear suspension to fully extend. Insert the guide pin of the sag scale in the rear
axle hole (see image 1). Adjust the sag scale up or down in the slotted area until the zero point on the scale is in line with a
reference point on the chassis. The seat bolt, fender bolt, or a mark from a felt pen or section of tape on the fender make good
reference points (see image 2). This reference point represents your maximum travel.
Note: Be sure to use the same maximum travel reference point with each measurement taken.
2) Remove the bike from the stand and measure with the bike under its own weight (see image 3). This is static sag. Check your
service manual for static sag specifications, but your measurement should fall approximately between 25 and 35mm. If
adjustments are required to achieve the proper measurement, please refer to your service manual for instructions on adjusting
your spring preload.
3) To check rider sag, have someone hold the bike steady with the rider aboard in a normal riding position (feet on the pegs). Have
the rider bounce up and down on the suspension several times then allow it to settle to a resting position. Using your reference
mark you should now see a reading somewhere in the area of 90 to 100mm (see image 4). Check your service manual for rider
sag specifications. If adjustments are required to achieve the proper measurement, please refer to your service manual for
instructions on adjusting your spring preload.
If rider sag is less than 90mm with the correct static sag, your spring is probably too stiff for your riding weight. If rider sag is
more than 100mm with the correct static sag, your spring is probably too soft for your riding weight. Corrections should be
made, such as replacing your spring. Please refer to your service manual for recommended spring rates and servicing.
image 1 image 2 image 3 image 4
I08-0336 6/2010 1 of 2
Thank you for choosing the Motion Pro Folding Sag Scale. The instructions below will show you how
to check both the static sag and rider sag of both the front and rear suspension on virtually
any motorcycle and provide basic guidelines for proper sag settings. Please refer to
your motorcycle’s service manual for specifications and recommending settings
for your particular model.