5. PRIMARY DRIVE
The primary drive from the crankshaft to the
clutch is by means of a double-row chain 3/8" x
7/32"
in the MC
250
and a triple-row chain
3/8"
x
7/32"
in the
400, 440
and
501.
The chain is
an endless type and has 54 links. The manufac-
ture is RENOLD. Other brand chains are not
recommended.
n
•
6. MAGNETO. IGNITION COILS
The Magneto. an APPT MZ 65 rotates in the
same direction as the motor cycle moves. It is
attached to the right crankshaft on a tapered
outer journal. A 4 mm screw determines the
proper position of the magnet. The primary
coil, condensor and contact breaker are moun-
ted on the stator. The main coil is mounted
under the fuel tank and fastened to the frame.
The manufacturer is PRUFEX
#
BZ
140/1,
or
BOSCH
#
PA
0221500800.
7. CLUTCH
The clutch is attached to the transmission main
shaft. It is an oilbath clutch which is built in three
different models. The MC
250
has a clutch which
is used in conjunction with the double row prima-
ry chain. It has six toothed outer clutch plates
which are 99 mm in diameter and the final outer
clutch plate which has a cork facing. Eighten
stacked saucer type springs are used with the
400
and
440.
There is a choice of two different clut-
ches. The smaller unit with 99 mm diameter
plates and a triple link chain, or the unit with
119 mm diameter plates, also triple link chain.
The MC 501 comes with the larger diameter unit
only.
Small Diameter Clutch:
Six outer toothed plates and six inside toothed
plates without any facing and one outside plate
with a cork facing and one pressure plate locked
with 2 rings. Twenty saucer type springs stacked
in series of 2.
Large Diameter Clutch:
Six outer toothed plates with a cork facing and
five inner toothed plates without facing. Twenty
saucer type springs stacked singly. () ()
5. Primary drive
6. Ignition compl.
7. Wiring Diagram
00
8. Small Duplex clutch Disassercbled
Maico 72-74.5 Radial Manaual
www.maicowerk.com
Courtesy of vintagemaico@gmail.com
To Next Page
Loading...
Need help?
General
