Related Manuals for Maico MC250
Summary of Contents for Maico MC250
- Page 1 Maico 72-74.5 Radial Manaual AfAICO MC250 MC400 MC440 MC501 '" .•.. Instruction book Service manual .•.. From January 1974 .•.. www.maicowerk.com Courtesy of vintagemaico@gmail.com...
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Page 2: Table Of Contents
Maico 72-74.5 Radial Manaual CONTENTS CONTENTS Page 3 Page 3 Preface Preface Page 3 Page 3 Technical data Technical data Page 7 Page 7 Description Description of the machines of the machines III. III. A - Motor A - Motor... - Page 3 Maico 72-74.5 Radial Manaual I. PREFACE I. PREFACE The Maico models MC 250, 400, 450 and 501 CCM are constructed The Maico models MC 250, 400, 450 and 501 CCM are constructed and designed especially for compe- and designed especially for compe-...
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Page 4: Exploded View - Engine (Drawing)
Maico 72-74.5 Radial Manaual Champion Champion Champion Champion Champion Champion Champion Champion Spark Plug: Spark Plug: N2 or N2G N2 or N2G N2 or N2G N2 or N2G N2 or N2G N2 or N2G N2 or N2G N2 or N2G... - Page 5 Maico 72-74.5 Radial Manaual •• •• •• •• "'-- "'-- " " " " ,,--- ,,--- 35---- 35---- " " " " •• •• " •• " •• '" '" •• •• '" '" " " www.maicowerk.com Courtesy of vintagemaico@gmail.com...
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Page 6: Description Of The Machines
DESCRIPTION OF THE MACHINES DESCRIPTION OF THE MACHINES The Maico MC 250, 400, 440 and 501 ccm Motorcycles are very high performance competition motor- The Maico MC 250, 400, 440 and 501 ccm Motorcycles are very high performance competition motor-... -
Page 7: Primary Drive (Assembled)
Maico 72-74.5 Radial Manaual PRIMARY DRIVE The primary drive from the crankshaft to the clutch is by means of a double-row chain 3/8" 7/32" 3/8" in the MC and a triple-row chain 7/32" 400, 440 501. in the The chain is an endless type and has 54 links. -
Page 8: Transmission With Bearings Disassembled
Maico 72-74.5 Radial Manaual GEARBOX GEARBOX The gearbox is a dog shifting type 4 speed with 2 shift forks and a shifting cam. It is available in two The gearbox is a dog shifting type 4 speed with 2 shift forks and a shifting cam. It is available in two... -
Page 9: Frame (Bare)
Maico 72-74.5 Radial Manaual CHASSIS CHASSIS FRAME FRAME The double-down The double-down tube frame is made of high tube frame is made of high quality quality chrome moly tubing. The welds are par- chrome moly tubing. The welds are par-... -
Page 10: Front Wheel (Exploded Drawing)
Maico 72-74.5 Radial Manaual FENDERS FENDERS The front fender is rubber-mounted The front fender is rubber-mounted on the lower triple clamp. The rear fender is also rubber-mounted on the lower triple clamp. The rear fender is also rubber-mounted under the seat and on the rear frame member. Both fenders are made from vibration under the seat and on the rear frame member. -
Page 11: Setting Ignition Timing With Dial Indicator
Maico 72-74.5 Radial Manaual SERVICE INSTRUCTIONS SERVICE INSTRUCTIONS PREPARATION FOR COMPETITION USE PREPARATION FOR COMPETITION USE TIMING TIMING Tools needed for setting the timing are a dial indicator, feeler gauge, and a buzz box or circuit breaker Tools needed for setting the timing are a dial indicator, feeler gauge, and a buzz box or circuit breaker light. -
Page 12: Clutch Adjustement At The Lever
Maico 72-74.5 Radial Manaual Petcocks Petcocks In the two petcocks are screens to prevent dirt from entering the float bowl. These screensmust be In the two petcocks are screens to prevent dirt from entering the float bowl. These screensmust be cleaned regularly. -
Page 13: Changing Fork Oil (Draining)
Maico 72-74.5 Radial Manaual Next, the air release valves, located in the top oil filler Next, the air release valves, located in the top oil filler caps, should be checked by compressing caps, should be checked by compressing forks and forks and observing air pressure release. -
Page 14: Chain Adjustement
Maico 72-74.5 Radial Manaual 3. The retainer nut and eye are replaced and re-tightened. 3. The retainer nut and eye are replaced and re-tightened. The shock rod is pushed all the way to the The shock rod is pushed all the way to the... -
Page 15: Piston Disassembly
Maico 72-74.5 Radial Manaual ASSEMBLY AND REPAIR INSTRUCTIONS FOR ENGINE Removal from Frame Remove the tank Remove the exhaust Remove the carburetor Remove the cylinder head and top engine brace Remove the ignition wire Remove the 10 mm x 1 engine mount bolts... -
Page 16: Holding The Clutchbody With Special Holding Tool
Maico 72-74.5 Radial Manaual with a screw driver. The puller is then remo- with a screw driver. The puller is then remo- ved and the clutch plates and springs are lif. ved and the clutch plates and springs are lif. -
Page 17: Shimming The Layshaft
Replace worn out parts. 3.11 Never use more than 20 clutch springs (MC250 - 18 double (0) and MC 400, 440, 501 - large tri- 3.11 Never use more than 20 clutch springs (MC250 - 18 double (0) and MC 400, 440, 501 - large tri-... - Page 18 Maico 72-74.5 Radial Manaual ASSEMBLY AND REPAIR INSTRUCTIONS ASSEMBLY AND REPAIR INSTRUCTIONS FOR CHASSIS FOR CHASSIS Disassembly of Forks Disassembly of Forks 1.1 Remove front wheel 1.1 Remove front wheel 1.2 Remove handlebars and bar clamps 1.2 Remove handlebars and bar clamps 1.3 Loosen both top 10 mm pinch bolts and remove both fork caps.
- Page 19 Maico 72-74.5 Radial Manaual SHOP BULLETINS SHOP BULLETINS RACING MODIFICATIONS RACING MODIFICATIONS www.maicowerk.com Courtesy of vintagemaico@gmail.com...
- Page 20 Maico 72-74.5 Radial Manaual WORK SHOP BULLETIN WORK SHOP BULLETIN NO.1 NO.1 Subj.: Subj.: 250, 360 250, 360 early early clutch clutch 400cc 400cc & & If slipping If slipping or incomplete or incomplete clutch release occurs correct as clutch release occurs correct as...
- Page 21 Maico 72-74.5 Radial Manaual SHOP BULLETIN #3 SHOP BULLETIN #3 t50LLf. TIN t50LLf. TIN Z50C-L Z50C-L . /0'OOlf/l:./I . /0'OOlf/l:./I T7LJ!J5 T7LJ!J5 :5TA6F I :5TA6F I FOE MDlDCeLJ55 FOE MDlDCeLJ55 ~ TPAIL !CID/Nt:., ~ TPAIL !CID/Nt:., Z3m, Z3m, 5'MM 5'MM I"...
- Page 22 Maico 72-74.5 Radial Manaual SHOP BULLETIN If the ~ear box is missing gears either shifting up or shifting down, this means that the shift linkage is not in its center location. To position the shift linka~e into its proper location,...
- Page 23 Maico 72-74.5 Radial Manaual SHOP BULLETIN #11 SHOP BULLETIN #11 T T pipe for 400cc may be made by T T pipe for 400cc may be made by cutting the center cylinderical section cutting the center cylinderical section of the exhause pipe 2.75 inches.
- Page 24 Maico 72-74.5 Radial Manaual SERVICE BULLETIN SERVICE BULLETIN Inepection and AdJuetment of the 250, 400, 450, and 501 Tranemieeion Inepection and AdJuetment of the 250, 400, 450, and 501 Tranemieeion Before taking the engine apart it ie recommended to clean the engine.
- Page 25 Maico 72-74.5 Radial Manaual Insert Insert the thrust the thrust washer in the mainshaft, washer in the mainshaft, either either by inserting by inserting clutch clutch body, or use some bushes to pull body, or use some bushes to pull...
- Page 26 Maico 72-74.5 Radial Manaual radial. and also the U 501. radial. and also the U 501. The fig. The fig. C depicts the related positions for C depicts the related positions for th~ 250, 360, ~OO .~d 501 sq~are barrels.
- Page 27 Maico 72-74.5 Radial Manaual www.maicowerk.com Courtesy of vintagemaico@gmail.com...
- Page 28 Maico 72-74.5 Radial Manaual .•.. .•.. ••• ••• c> c> " " ..., ..., ••• ••• ••• ••• a> a> "\ "\ -< -< " " <t <t < < <J) <J) >- >- :> :> www.maicowerk.com Courtesy of vintagemaico@gmail.com...
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- Page 30 Maico 72-74.5 Radial Manaual www.maicowerk.com Courtesy of vintagemaico@gmail.com...
- Page 31 Maico 72-74.5 Radial Manaual ShU> dULLE11~ ,. ShU> dULLE11~ ,. 4UOcc 4UOcc Cooper Motors aoes not recommend Cooper Motors aoes not recommend Increasing Increasing tne "Vuce tne "Vuce engine speed through changing the ports or changing the engine speed through changing the ports or changing the...
- Page 32 Maico 72-74.5 Radial Manaual www.maicowerk.com Courtesy of vintagemaico@gmail.com...
- Page 33 Maico 72-74.5 Radial Manaual www.maicowerk.com Courtesy of vintagemaico@gmail.com...