1. Stop the engine.
2. Remove the large rubber plug from the transmission housing.
3. Look into the hole in the
transmission housing
and rotate the spur gear
until the access hole in
the aluminum drum
is visible.
4. Once the access hole is
visible, hold the spur
gear and use your finger
to turn the primary gear
shaft which extends from the transmission housing counterclockwise.
Note that you will see two set screws pass under
the access hole.As you turn the
primary gear shaft counterclockwise,
the first set screw
holds the two-speed mechanism
to the shaft. Do not loosen this
screw. The second set screw is
the adjustment screw.
5. Insert the 2.0 hex wrench
through the clutch drum and
into the adjustment set screw.
6. Turn the adjustment screw 1/8 turn clockwise to raise the
shift point (later shifts). Be careful not to over tighten the
adjustment screw or you may damage the tension spring.
Do not make constant
adjustments or you will loosen
the screw’s locking device.
7. Turn the adjustment screw 1/8
turn counter-clockwise to lower
the shift point (earlier shifts).
Be careful not to loosen the
adjustment screw too much or
you may cause the screw and
spring to fall out (requiring major
disassembly and repair).
8. Use 1/8 turn increments to find
the approximate, desired shift point.
9. Check performance by running a test lap after
each adjustment.
10. Use 1/16 turn increments to fine-tune the shift point.
11. Be sure to reinstall the access plug to prevent dirt from
entering the transmission.
:
Off topic i guess....Most any parts from the 2.5-3.3 should be interchangeable....You can go to Traxxas.com and they have a comparison chart that shows the 2.5-3.3, all of there specs, measurements, differences side by side to compare....
