background image

-

-

-

-

B.

CHASSIS

1.

FRAME

The double-down

tube frame is made of high

quality

chrome

moly tubing.

The welds are par-

tially welded with

the heli-arc principle

and par-

tially

welded with

acetylene and oxygen.

Espe-

cially

on areas subjected

to high stress often

found

in

moto-cross

competition.

2.

TELESCOPIE FRONT FORKS

The telescopie

forks with

hydraulic

dampening

have 180 mm of travel. The springs are mounted

externally

on the fork

tubes and are covered with

rubber fork

boots. The hydraulic

shocks are moun-

ted

in

the fork sliders. and have optimal

dampe-

ning characteristics:

Each fork tube is filled with

230 cc (7.2 fl. oz.)

of fork oil. The fork

tubes are sealed on top with

plugs containing

air escape valves. whose proper

functioning

is essential.

3.

SWINGING ARM - REAR SUSPENSION

The swing arm has a very wide bushing surface

with

two rubber-metal

bushings. Either

Girling

or Koni springs and shocks are available.

The

shocks dampening

characteristics

are especially

developed

for Maico.

4.

SEAT

The seat is a one-man seat specially

fitted

and

developed

after years of moto-cross

sport. Spe-

cial care was taken selecting the composition

of

the foam rubber

in

the seat for maximum

com-

fort.

5.

FUEL TANK

The fuel tank (fiberglass or aluminium

alloy)

is

shock-mounted

on the frame with

soft rubber

bushings. Two petcocks

provide a large volume

of fuel flow.

6.

FOOT PEGS

The foot

pegs are short, spring loaded folding

moto-cross

foot

pegs without

rubber covers.

11. Frame (Bare)

12. Telescopie

Fork

7.

HANDLE

BARS AND CONTROL

LEVERS

The handle bar is made of high quality

22 mm (7/8")

diameter

chromed

tubing,

strengthened

with

a

cross bar. The control

levers and twist grip are made by Magura. The clutch

and brake lever are made

of cast aluminium

alloy with

a ball on the ends for safety. The twist grip, also made by Magura, is made

of plastic with

80 degress of turning

movement

with

the 36 mm carbo All cables are coated with

Teflon

for minimum

friction.

Содержание MC 250

Страница 1: ......

Страница 2: ...AfAICO MC250 MC400 MC440 MC501 Instruction book Service manual From January 1974...

Страница 3: ...w Clutch Disassembled 8 g Transmission with Bearings Disassembled 9 10 Carburetor Air Cleaner Boot Air Cleaner Assy 9 11 Frame Bare 10 12 Telescopie Forks Photograph Exploded Drawing 10 13 Front Wheel...

Страница 4: ...nce 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...

Страница 5: ...ake Trial Ground Clearance Front Suspension Rear Suspension WHEELS Front Rear TIRES Front Rear Tire Pressure Front Brake Rear Brake Fuel Tank Petcocks Air Filter MC 199 152 123 10 1 Liter gear oil 1 q...

Страница 6: ...35 53 15 D 20...

Страница 7: ...o 83 00 400 CC 7695 77 10 77 25 t078 00 250 CC 66 95 67 10 67 25 to 68 00 The MAHLE piston is forged of a special piston alloy containing a large amount of silicon With L shaped piston ring in the 250...

Страница 8: ...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...

Страница 9: ...of the highest qual ity steel 9 Transmission with Bearings Disassembled 10 CARBURETOR AIR CLEANER The carburetor is a concentric type V 54 36 iZ or 38 iZ mm On the 501 wh ich is attached to the cylin...

Страница 10: ...or Koni springs and shocks are available The shocks dampening characteristics are especially developed for Maico 4 SEAT The seat is a one man seat specially fitted and developed after years of moto cr...

Страница 11: ...kes M 4 x 243 mm 18 spokes M 4 x 230 mm On the small end of the hub is a reinforcing ring made of aluminium alloy for strength 13 Frant Wheel 10 REAR WHEEL This rim is also available in chromed steel...

Страница 12: ...hen the proper amount of advance is found and the igni tion points break the circuit at the previously mentioned settings then the screws holding the stator plate in position should be re tightened ev...

Страница 13: ...ion A softened head gasket should be installed and the cylinder head bolts tightened to 18 foot pounds 6 CRANK SHAFT While the cylinder is not on the crankcases the play in the lower connecting rod be...

Страница 14: ...ssary Also a warped or bent swing arm should be replaced Mounting of Koni shock absorbers 1 The retainin9 clips and springs on original shocks must be removed 2 The bottom spring retainer is put on it...

Страница 15: ...elease it from the adjustment mecha nism 6 The shock can then be re assembled in reverse order Be sure to re install the rubber bumper Failing to do so can seriously damage the shock under use Pay spe...

Страница 16: ...y tapping the pin lightly Use caution not to apply any pres sure to the side of the connecting rod 2 4 Lay engine on primary case side and remove timing cover 2 5 Remove stator by loosening and removi...

Страница 17: ...n gear shaft 2 11 Removal of transmission The shift fork shaft is pulled out then the main shaft with slider gears and eventually the lay shaft The spacer ring and three needle bearings are then lifte...

Страница 18: ...he main drive sprocket and the primary chain Be careful not to forget the washer between mainshaft bearing and the clutch housing and body Check to see if plates are warped or the teeth on the plates...

Страница 19: ...ir releasevalves are functioning properly and the top pinch bolts are tightened 2 7 Handlebars and front wheel are mounted 3 Swing Arm Rear suspension disassembly 3 1 The rear wheel is removed by remo...

Отзывы: