14
Slipper Clutch
1. Install the inner slipper plate (84) onto the top shaft
(83). Make sure the notch in the inner slipper plate
keys onto the 2x10 spring pin (116) in the top shaft.
2. Place the slipper pad (64) and outer slipper plate
(85) onto the top shaft. Make sure the slipper pad is
properly centered between the two plates.
3. Install the slipper bushing (86) into the spur gear (16).
4. Slide the spur gear onto the top shaft and secure it to
the outer slipper plate using two 3x6mm screws (J)
and two 3mm spring washers (P).
5. Slide a 3mm fl at washer (Q), 3mm brass washer (W),
and then another 3mm washer onto the top shaft.
6. Install the slipper spring (87), 3mm washer, and then
the 3mm lock nut (O). Refer to page 9 for adjusting
the slipper.
Motor
Mounting
Hole
s
Flat
Area
Motor Plate
Mounting Hole
s
P
P
H
H
K
80
Motor Installation
1. Install one 3mm spring washer (P) onto each of
the 3x8mm motor mount screws (H).
2. Align the mounting holes in the motor with the
mounting holes in the motor plate, and secure
the motor with the two 3x8mm screws.
Note:
Do
not fully tighten the 3x8mm screw at this time.
3. Install the pinion gear (80), tooth side out, onto
the motor shaft.
4. Rotate the pinion gear on the motor shaft until
the set screw hole is aligned with fl at area of the
motor shaft.
5. Secure the pinion to the motor shaft with the
3x3mm set screw (K).
Spur
Pinion
Motor Back
Looser Mesh
Motor Forward
Tighter Mesh
Motor Screw
Motor
Screw
Gear Mesh
1. Setting the proper mesh between the spur and pinion gears is important.
Improper mesh can result in damage to the spur and pinion gears,
shorter run times and can make the motor run hot. Although setting the
mesh correctly can be tedious the process can be simplifi ed with the aid
of a simple scrap of standard note book paper.
2. Place the scrap paper between the pinion and spur gear. Slide the
motor forward so the pinion teeth mesh with the spur gears with the
piece of paper pinched tight between them.
3. Tighten the motor screws to hold the motor in place, and slowly rotate
the gears until the paper is pushed out from between the gears.
4. Rock the spur gear back and forth with light pressure. The gear should
be able to move a small amount (about 1/4 of the size of one of the gear
teeth) without moving the pinion.
5. If the spur moves more than the recommended amount the gear mesh is
too loose. Loosen the motor mount screws and move the motor closer to
the spur gear.
6. If the spur moves less than the recommended amount the gear mesh is
too tight. Loosen the motor mount screws and move the motor away from
the spur gear. Once the gear mesh is correct tighten down the motor
screws, and re-check the mesh to be sure it did not change as the motor
screws were tightened. After every few runs it is a good idea to re-check
the gear mesh and make sure the motor screws are still tight.
