Adjusting the shift point, Air gap setting shift timing setting, Assembly of the2 speed clutch bell – OFNA Racing 2-Speed, Shoe User Manual

Page 3

ASSEMBLY OF THE2 SPEED CLUTCH BELL

34110
5x10mm
Ball bearing

34110)
5x10mm
Ball bearing

35958
5x8x2.5mm
Ball bearing

35238
14T 1st
Clutch Gear

35242
Clutch Bell
(For 2 speed.)

35243
Dust Cover

3x5mm
Screw

5x9x0.3mm
Washer

5x8x0.8mm
Washer

5x8x0.3mm
Washer

35253
18T 2nd
Clutch Gear

* Depending on the engine you use,
it may be necessary to use 5x9x0.3mm
washer for a long crank shaft.

* Notice the direction of the
2nd clutch gear as shown.

3x8x0.5mm
Washer

10091
Normal
Pilot Shaft

10098
SG Nut/shims
Pilot Shaft

( FOR NORMAL PILOT SHAFT)

( FOR SG PILOT SHAFT)

* Adjust the engine before adjusting the clutch shift timing.
Adjust the engine as per engine instruction manual.

1. Once the engine adjustments have been completed, proceed to the adjustment
of the clutch shift timing.
(Using a 2mm allen wrench to adjust the clutch shoes.)

Note:
Clockwise--------Shift timing will become slower.
Counter Clockwise---Shift timing will become quicker.

2. Adjust the clutch shift timing for your track conditions.
As you tighten (Clockwise) the 3x15mm hex screw , the shift timing will become
slower.
As you loosen (Counter Clockwise ) the 3x15mm hex screw, the shift timing will
become quicker.

3. Set the shift timing to the track conditions while the car is running.

* Use a 2mm and 2.5mm allen wrench to
set the clutch shoes.

2mm and 2.5mm
Allen Wrench

Clockwise
(Tighten)

Counter-clockwise
(Loosen)

Adjustment thru
this hole.

To Front

M3x15
Hex Screw

ADJUSTING THE SHIFT POINT

* Two steps to adjust the shoes and shift timing.

6x6mm
Set Screw

1. Use a 2.5 mm allen wrench to
adjust shoe assembly air gap.
Tighten Set Screws, M6x6mm, to
adjust the air gap between the
shoe assembly and clutch bell
wall. Adjust both screws for an
even amount of gap of about
1mm.

2. Use a 2mm allen wrench to

adjust the shift timing. Turn,
M3x15mm, screws IN until
spring compresses, do not
crush! Back off screw 5 turns,
this is a good place to start.

When adjusting shift timing,
always turn each screw the
same number turns.

AIR GAP SETTING

SHIFT TIMING SETTING

10098