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Maico MC250 User Manual

Maico MC250
33 pages
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AfAICO
MC250
MC400
MC440
MC501
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Instruction book
Service manual
From January 1974
Maico 72-74.5 Radial Manaual
www.maicowerk.com
Courtesy of vintagemaico@gmail.com
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Maico MC250 Specifications

General IconGeneral
Transmission5-speed
Front BrakeDrum
Rear BrakeDrum
Final DriveChain
CoolingAir
Front SuspensionTelescopic forks
Rear SuspensionTwin shocks
Seat Height890 mm
Weight105 kg
Fuel Capacity10 liters

Summary

II. TECHNICAL DATA

Maico MC Specifications

Comprehensive technical specifications for Maico MC models.

III. DESCRIPTION OF THE MACHINES

3. THE PISTON

Information on MAHLE pistons, materials, ring types, and clearances.

4. CRANKSHAFT AND CONNECTING ROD

Details on crankshaft construction, material, heat treatment, and bearings.

7. CLUTCH

Information on the oilbath clutch, models, plates, and springs for different Maico models.

IV. SERVICE INSTRUCTIONS

A. PREPARATION FOR COMPETITION USE

Instructions for preparing the bike for competition, focusing on timing and carburetor.

1. TIMING

Step-by-step guide for setting ignition timing using a dial indicator and feeler gauge.

2. ADJUSTMENT OF CARBURETOR

Guide for adjusting idle, mixture, and factors affecting jetting.

8. TELESCOP FORKS - STEERING

Instructions for checking steering head bearings and fork tube straightness.

9. REAR WHEEL SUSPENSION

Checking swing arm bushings, shock absorber damping, and alignment.

B. ASSEMBLY AND REPAIR INSTRUCTIONS FOR ENGINE

2. Disassembly of Engine

Instructions for disassembling the Maico engine, including draining oil and removing parts.

3. Assembly of the engine - Shimming of individual parts

Guide for assembling engine parts, installing bearings, seals, and shimming.

C. ASSEMBLY AND REPAIR INSTRUCTIONS FOR CHASSIS

SHOP BULLETINS AND RACING MODIFICATIONS

WORK SHOP BULLETIN NO. 1: Clutch Issues

Troubleshooting and repair for clutch slipping or incomplete release.

SHOP BULLETIN #9: Gearbox Shift Linkage Adjustment

Procedure to correct the gear linkage if gears are missing or shifting is incorrect.

SERVICE BULLETIN: Transmission Inspection and Adjustment

Guide for inspecting and adjusting the transmission for wear and proper function.

Service Bulletin: Reasons for Gear Slipping

Explains common causes of gear slipping and related adjustments.

SHOCK MODIFICATION

SHOP BULLETIN #2: Carburettor Jetting Specifications

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