11
Changing your Coil Spring
1. With a 26mm 6-point socket wrench, loosen and remove the preload topcap. Remove the black spring spacers
(two spacers for 125mm travel, 1 for 100mm travel, none for 80mm travel). Compress the fork slightly and remove
the coil spring. You may need to firmly pull up on the spring to disengage it from the plunger shaft. Wipe the spring
dry with a rag and check the color code.
2. Install the new spring by dropping it into the upper tube. Install the spacer(s). Install and torque the topcap to 165
in-lbs (1864 N-cm).
3. Measure and adjust sag as described on page 10. Happy Trails!
FLOAT Forx
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Air Spring Tuning on FLOAT Forx
Read the FLOAT Air Spring Tuning Guide chart below to see if you need to change your air pressure. FLOAT Forx are
tuned by changing air pressure at the left topcap. (See page 8 for instructions for the FOX High Pressure Air Pump)
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FLOAT Air Spring Tuning Guide
Setting Sag on FLOAT Forx
To get the best performance from your FOX FLOAT fork, it is necessary to set and adjust sag. Sag is how much the
fork compresses or “sags” when the rider sits on the bicycle. Generally, this is 15-25% of the total travel.
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Measuring and adjusting sag
1. Install a zip tie on the upper tube and push it down until it contacts the fork seal.
Carefully sit on the bike and assume a normal riding position. The fork should
compress slightly. For F80X and F100X forks it is necessary to sit on the bike for a
minimum of 30 seconds. The bleed in the damper releases fluid and allows the fork
to settle to its sag height. Being careful not to further compress the fork, dismount
the bicycle. Measure the distance between the seal and the zip tie. This distance is
the sag.
2. Compare your sag measurement to the table.
If your sag is lower than on the table, remove the air topcap, screw on the
FOX High Pressure Air Pump fitting, note the current air pressure setting and
depress the black bleed-valve to reduce the gauge pressure by 5 psi. Measure
sag again and repeat adjustment if necessary.
If your sag is higher than on the table,
remove the air topcap, screw on the FOX High Pressure Air Pump fitting, note
the current air pressure setting and pump to increase the gauge pressure by 5
psi. Measure sag again and repeat adjustment if necessary.
