I.
PREFACE
The Maico models MC 250, 400, 450 and 501 CCM are constructed and designed especially for compe-
tition and off-road use. They are suitable for moto-cross and enduro competition, and for crossing any
difficult terrain. The moto-cross models are known for their high horse-power output, special frame
geometry and exceptional light weight. Fore these three qualities to be used fully, the machine must
always be tuned and serviced to the highest degree. These instructions, together with basic mechanical
knowledge will assure trouble free performance.
501 CCM
1
91,6 mm
76
mm
501 ccm
12 : 1
51/6900 RPM
Bing Type V 54
38mm
185
285
40
As Required
440 CCM
400 CCM
250 CCM
Air cooled, Piston Port, 2 Stroke Engine
1 1 1
67 mm 77 mm 82 mm
70 mm 83 mm 83 mm
247 ccm 386 ccm 438 ccm
12:1 12:1 12:1
33/7000 RPM 43/6700 RPM 47/6900 RPM
Bing Type V54 Bing Type V 54 Bing Type V 54
36 mm 36 mm 36 mm
175-180 185 185
280-285 285 285
35 40 40
As Required As Required As Required
1 1/2 Turns As Required
Internal Rotor Magneto Type Appt. MZ 465 With Internal Primary
and External Secondary Ignition Coiis
II. TECHNICAL DATA
Maico MC
Motor:
No. of Cylinders:
Bore:
Stroke:
Displacement
(CCl
Compression Ratio:
Brake Horse-Power (Din)
Carburetor:
Diameter:
Main Jet:
Needle Jet:
Low Speed:
Needle Position:
Idler Air Screw:
Ignition:
I.
PREFACE
The Maico models MC 250, 400, 450 and 501 CCM are constructed and designed especially for compe-
tition and off-road use. They are suitable for moto-cross and enduro competition, and for crossing any
difficult terrain. The moto-cross models are known for their high horse-power output, special frame
geometry and exceptional light weight. Fore these three qualities to be used fully, the machine must
always be tuned and serviced to the highest degree. These instructions, together with basic mechanical
knowledge will assure trouble free performance.
501 CCM
1
91,6 mm
76
mm
501 ccm
12 : 1
51/6900 RPM
Bing Type V 54
38mm
185
285
40
As Required
440 CCM
400 CCM
250 CCM
Air cooled, Piston Port, 2 Stroke Engine
1 1 1
67 mm 77 mm 82 mm
70 mm 83 mm 83 mm
247 ccm 386 ccm 438 ccm
12:1 12:1 12:1
33/7000 RPM 43/6700 RPM 47/6900 RPM
Bing Type V54 Bing Type V 54 Bing Type V 54
36 mm 36 mm 36 mm
175-180 185 185
280-285 285 285
35 40 40
As Required As Required As Required
1 1/2 Turns As Required
Internal Rotor Magneto Type Appt. MZ 465 With Internal Primary
and External Secondary Ignition Coiis
II. TECHNICAL DATA
Maico MC
Motor:
No. of Cylinders:
Bore:
Stroke:
Displacement
(CCl
Compression Ratio:
Brake Horse-Power (Din)
Carburetor:
Diameter:
Main Jet:
Needle Jet:
Low Speed:
Needle Position:
Idler Air Screw:
Ignition:
Maico 72-74.5 Radial Manaual
www.maicowerk.com
Courtesy of vintagemaico@gmail.com
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