Maico motorcross 250 - User Manual

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1981 Maico Service Manual

www.maicowerk.com

Courtesy of www.franklins.biz

Main Page

Contents2
Description of Machine5
Operating Instructions6
Starting and Stopping the Engine7
The First Test Run7
Technical Data8
Fuel Capacity8
Mixture Ratio and Fuel8
Frame, Telescopic Fork, Swing Arm, Brakes10
Engine10
Measurement Chart Cylinder Piston10
Transmission Chart11
Transmission Ratio MC12
Ignition12
Carburetor12
Torque Specifications13
The Frame16
Servicing the Steering Head16
How to Renew the Bearings16
Assembly17
The Swing Arm17
Disassembly of the Swing Arm17
Greasing Needle Bearing18
Renewing Chain Guide18
Renewing Guide Rollers and Plastic Plate18
The Air Filter19
Disassembling the Air Filter19
Wheels, Brakes and Spokes20
The Front Wheel20
The Rear Wheel20
Disassembling the Front Wheel20
Assembling the Front Wheel21
Inspecting the Spokes22
Assembling the Rear Wheel23
Front Brake Adjustment25
Adjusting the Front Brake25
Adjusting the Rear Brake25
Dampening Characteristics26
The Telescopic Fork26
The Fork Oil27
Service Not Requiring Fork Removal27
Disassembling the Fork27
Inspection of the Assembled Parts28
Changing the Radial Seal Ring29
Assembling the Fork29
Shock Absorbers30
Disassembling Rear Shocks30
Disassembling the Spring for Rear Shocks31
Inspection of Shock Absorbers31
Assembling the Rear Shocks31
The Preload32
The Preloading32
Maintenance and Disassembly33
Assembly Operations34
Shock Absorbers - Additional Program35
Damper Adjustment35
Springs35
Advice for Spring Adjustment35
Exhaust System and Silencer36
Refilling of Silencer36
Handlebars, Fittings and Cables37
The Twist Grip37
Inspecting the Fittings37
The Cables37
Brake Cable38
Clutch Cable38
Lubricating the Cables39
General Description of Engine41
Engine Removal from the Frame42
Repairs Requiring Engine Removal42
General Remarks42
Engine Removal42
Inspecting and Repairing Engine49
The Reed Valve Engine50
Adjusting of Gear Change Crank50
Assembling the Engine52
Functional Control53
Timing Marks60
Spark Plugs60
Explosion Chart Carburetor61
Timing and Jetting63
Pilot System64
Midrange64
Top End64
Changing Throttle Cable64
Changing Jets65
Changing Main Jet65
Changing Needle Jet65
Chain65
Technical Data of the Chain66
Chain Slack66
Chain Maintenance66
Sprockets66
Maintenance67
The Tools67
Ordering Spare Parts69
Service Instructions69
Preparation for the Race70
Lubrication70
Trouble Diagnosis71

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Maico motorcross 250 Specifications

General

Brand	Maico
Model	motorcross 250
Category	Motorcycle
Language	English

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