Balancershaft
Oil clearance balancer shaft bearing Out of specification Replace bearing. Oil clearance 0.020 - 0.048 mm 0.0008 0.002 in Oil clearance 0.020 - 0.048 mm 0.0008 0.002 in Clean the bearings, balancer shaft and bearing portions of the crankcase. Place the crankcase upper on a bench in an upside down position. Install the upper half of the bearings and the balancer shaft into the crankcase upper . Put a piece of Plastigauge on each balancer shaft journal. Install the lower half of the bearings...
Info Ftt
Measure the valve clearance, in sequence, for Nor. 3, 4, and No. 2 cylinders. Out of specification- - Adjust clearance. Valve clearance By the following adjustment steps. Position the valve lifter slots intake and exhaust side opposite each other. Install the Tappet Adjusting Tool 0 YM-33961 onto the camshaft . Turn the crankshaft until the lobe of the tool depresses the valve lifters 3 .
foreword 1
This Supplementary Service Manual has been prepared to introduce new service and data for the VMX12E VMX12EC. Forcomplete service information proceduresitis necessaryto use this Supplementary Service Manual together with the following manual. VMX12N VMX12NC SERVICE MANUAL LIT-11616-04-67 VMX12S VMX12SC SUPPLEMENTARY SERVICE MANUAL LIT-11616-04-98 VMX12U VMX12UC SUPPLEMENTARY SERVICE MANUAL LIT-I1616-06-08 VMXl2E VMXl2EC SUPPLEMENTARY SERVICE MANUAL 1992by Yamaha Motor Co., Ltd. 1st Edition,...
chassis
Ch Bearing lt Bearing Drive pinion gear lt Final drive gear shim Bearing Bearing retainer O-ring Oil seal Coupling gear lt gt Spring Circlip Drive shaft Oil seal 27Washer Circlip Bearing Circlip Universal joint
Brake Fluid Level Inspection
Brake fluid level brake master cylinder Level low- Replenish flu id. Spilled fluid is cleaned up immediately to prevent painted surfaces or plastic parts from erodina. Use only the designated quality brake fluid, otherwise poor brake performance will result. Water does not enter the master cylinder when refilling, otherwise poor brake performance.
Exploded Diagram Rmm
Each chapter provides exploded diagrams before each disassembly section for ease in identifying correct disassembly and assembly procedures. ILLUSTRATEDSYMBOLS Referto the illustration Illustrated symbols to 8 are designed as thumb tabs to indicate the chapter's number and content. 2 Periodic inspection and adjustment Cooling system Carburetion Chassis Electrical Illustrated symbols 9 to f are used to identify the specifications appearing i n the text. 9 Filling fluid 35 Lubricant fi Tightening...
Valve Clearance Adjustment 1
Pads stepped in 0.05 mm 0.002 in increments gt Remove the pads 5 from the lifters. Use a small screwdriver and a magnetic rod for removal. Select the proper valve adjusting pad from the chart below
Exploded Diagram 1
Each chapter provides exploded diagrams before each disassembly section for ease in identifying correct disassembly and assembly procedures. ILLUSTRATED SYMBOLS Referto the illustration Illustrated symbols to 8 are designed as thumb tabs to indicate the chapter's number and content. 2 Periodic inspection and adjustment Illustrated symbols to are used to identify the specifications appearing. Filling fluid lt 0D Lubricant fi Tightening Wear limit, clearance Engine speed 3 gt ii. V, A Illustrated...
Rear Shock Absorber Adjustment
Spring preload adjustment steps Using the screwdriver, adjust the spring preload. Stiffer a Increase the spring preload. Turn the spring seat clockwise. Softer Decrease the spring preload. Turn the spring seat counterclockwise. Standard Position Minimum Position 1 Never attempt to turn the spring seat beyond the maximum or minimum setting. Damping adjustment steps Adjust the damping with the damping adjuster . Turn the adjuster clockwise. Softer Decrease bhe damping Turn the adjuster T...
Bg
Yamaha chain and cable lube orSAE 1OW30 motor oil Yamaha chain and cable lube or SAE 10W30 motor oil Yamaha chain and cable lube or SAE 10W30 motor oil Yamaha chain and cable lube or SAE 10W30 motor oil
Middle Gear Service
Universaljoint 5 Dust seal 3 Housing O-ring Bearing Collapsible collar Bearing Middle drive shaft Middle driven pinion gear Spring seat Damper spring Damper cam Middle drive pinion gear Thrust washer Retainer
Ezi
3. Valve Spring Compressor P N YM-04019 This tool is needed to remove and install the valve assemblies. P N YM-01122 This tool is used to remove the valve guides. 5. Valve Guide Reamer 5.5 mm P N YM-01196 This tool is used to rebore the new valve guide. 6. Valve Guide Installer P N YM-01129 This tool is needed to install the valve guides properly. 7. Valve Seat Cutter Set P N YM-91043 This tool is needed to resurface the valve seat. 8. Flywheel Puller P N YU-33270 - Adapter P N YM-33282 - 2...
Valve Clearance Adjustment
Crankcase cover plate T Special washer 2 Tinning plug Check for clog of oil passage 4 in the bolt. If any, clean the oil passage. Inspection and Adjustment 1. Measure Valve clearance NOTE Be sure piston is at Top Dead Center TDC when measuring clearance. Valve clearance measurement steps Turn the crankshaft counterclockwise with a 32 mm 1.26 in socket wrench . Valve clearance must be measured when the engine is cool to the touch. Align the Tj mark forthe No. 1 cylinder on the flywheel with the...
Engine Oil Replacement
1.Start the engine and let it warm up for several minutes. 2.Stop the engine and place an oil pan under the drain bolt. Drain the crankcase of its oil. 5.If the oil filter is to be replaced during this oil change, remove the following parts and reinstall them. Replacementsteps Remove the oil filter using the oil filter wrench 2 .
For Chassis Service
Damper Rod Holder 24 mm P N YM-01328- 2 This tool is used to loosen and tighten the front fork cylinder holding bolt. 2. Front Fork Cap Socket 17 mm P N YM-01104 This tool isneededwhen looseningand tightening the front fork cap bolt. 3. Front Fork Seal Driver Weight P N YM-33963 - Adapter 40 mm P N YM-33964 - 2 These tools are used when installing the fork seal. P N YU-01268 This tool is used to loosen and tighten the steering ring nut. 1. Universal Joint Holder P N YM-04062 This tool is used...
Info Wqf
4. Fuel Level Gauge P N YM-01312-A This gauge is used to measure the fuel level in the float chamber. 5. Vacuum Gauge P N YU-08030 This gauge is needed for carburetor synchronization. P N YU-24460 This tester is needed for checking the cooling system. FOR ENGINE SERVICE 1. Clutch Holder P N YM-91042 This tool is used to hold the clutch when re-movingor installing the clutch boss locknut. 2. Tappet Adjusting Tool P N YM-33961 This tool is necessary to replace valve adjusting pads.
Exploded Diagram
Each chapter provides exploded diagrams before each disassembly section for ease in identifying correct disassembly and assembly procedures. ILLUSTRATED SYMBOLS Referto the illustration Illustrated symbols to lt are designed as thumb tabs to indicate the chapter's number and content. 0 General information 3 Periodic inspection and adjustment 5 Cooling system D Carburetion Illustrated symbols to are used to identify the specifications appearing in the text. Filling fluid Lubricant Specialtool...
Jpd
BRIDGESTONE G525AW DUNLOP F20 150 90V 15 BRIDGESTONE G526BW DUNLOP K525 1.0 mm 0.04 in Tire pressure cold tire Basicweight With oil and full fuel tank Load is the total weight of cargo, rider, passenger and accessories. Electrical lgnition system Generator system Battery type or model Battery capacity
appendices
Model Code Number Engine Starting Number Vehicle Identification Number 1UT VMX12SC 1UR 1UT-000101 VMX12SC 1UR-000101 JYA1UT00 GA000101 VMX12SC JYA1UR00 GA000101 Dimensions Overall Length Overall Width Overall Height Seat Height Wheelbase 2,300 mm 90.6 in 795 mm 31.3 in 1,160 mm 45.7 in 765 mm 30.1 in 1,590 mm 62.6 in 145 mm 5.7 in 282 kg 622 lb VMX12SC 283 kg 624lb Engine Engine Type Cylinder Arrangement Displacement Bore x Stroke Compression Ratio Compression Pressure Starting System Liquid...
Info Ibp
zngine speed xl03 r min 0.26 0.35Q at 20 C White - Starter relay Model Manufacturer Amperage rating Coil winding resistance l Iod el Ma nufacturer Self cancelling device Flasherfrequency Wattaae Self cancelling unit Model Manufacturer
G
lt Fuse IGNITION D ENGINE STOP switch 7 Ignitorunit Pick up coil 9 Pressure sensor Ignition coil 1 0 Ignition coil 2 Ignition coil 3 Ignition coil 4 Fuel pump relay FUEL RESERVE switch Fuel pump Starter motor Starter relay START switch lt g Starting circuit cut-off relay Diode lt g gt Clutch switch Sidestand switch lt g gt Neutral switch NEUTRAL indicator light Oil level gauge Diode assembly gt OIL LEVEL warning indicator light Fuse SIGNAL gt Flasher relay lt j Reed switch TURN switch gt TURN...
Disassembly
Use a thin slotted head screw driver. Take care not to scratch the inner tube. Loosen the bolt damper rod while holding the damper rodwith the T-handle and holder. T-handie YM-01326 90890-01326 Holder 2S mm YM-33962 90890-01375
Vmx12
3JPM USA 3JPN California 3LRA EUR 2WE-050101 USA 2WF-012101 California 2EN-042101 EUR JYA2WEE0 TA050101 USA JYA2WFC0 TA012101 California Basic weight With oil andfull fuel tank 284 kg 626 Ib California 281 kg 620 Ib EUR