Main Cartridge Bearing Replacement
1. Remove your rear wheel.
2. Remove the drive side crank arm.
3. Use a 4mm allen wrench to remove the two
Horst-link bolts.
4. Slide the dropouts off of the lower swingarm.
5. Remove the 8mm main pivot pin. Be ready to
catch the 2 washers as the pin is removed.
6. Remove the lower swingarm from the front
triangle.
7. Using blunt ended punch, tap out the far set of
bearings in the + pattern shown.
8. Tap the other set of bearings out of the frame, taking care not to scar the inside of the frame.
Do not attempt to re-use the bearings you've removed, even if they come out intact.
9. Apply a small amount of grease to the outside edge of the new bearings.
10. Using a vice or press, and a friend to hold your frame steady, press in the bearings one at a
time. Make sure they go in straight and that you're pressing on both the inner and outer races
evenly.
11. Install both bearings on one side of the frame.
12. Re-insert the compression sleeve inside the bearing
shell.
13. Press the second set of bearings into the frame.
14. Apply grease to the threads, shaft and head of the 8mm
pivot pin.
15. Have your friend hold the swingarm up to the front
triangle as you align the washer and insert the pin into
the drive side of the swingarm.
16. Align the washer on the non-drive side of the swingarm and slide the pin through. A gentle
tap with a rubber mallet may be necessary, but take care not to hammer the threads into the
swingarm on the other side.
17. Tighten the 8mm main pivot pin until snug. Be careful not to over tighten, a standard 3 inch
allen tool can generate enough torque to adequately tighten the main pivot bolt. Over-
tightening may result in crushed bearings.
Follow steps 1-4 in reverse for re-assembly.
ADDITIONAL WARNINGS AND REGULATIONS:
1. Mountain biking is an inherently dangerous sport. Know your limitations and ride within
them. RIDE AT YOUR OWN RISK!
2. Night riding is dangerous. Your Quasi-Moto frame is not supplied with any type of reflective
or lighting gear. WE DO NOT RECOMMEND RIDING AT NIGHT WITHOUT THE
PROPER GEAR.
3. Your Quasi-Moto frame is designed for closed course riding only. To make it street legal it is
your responsibility to acquire and install the required reflective and lighting gear outlined by
your local municipalities and federal government.
4. Your bike should be assembled only by a certified mechanic.
5. Always wear a helmet and full protective gear while riding.
