SANYANG HD 125/ 200 Specifications And SERVICE MANUAL

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Filed Under (Sym) by admin on 24-11-2010

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heck and adjustment Fault condition Probable causes Loosen carburetor drain bolt to check if there is gasoline inside the carburetor Fuel supplied tom carburetor sufficient No fuel is supplied to carburetor Remove spark plug, install it into spark plug cap, and perform a spark test against engine ground. Perform cylinder compression pressure test. Check if sparks Weak sparks, no spark at all Low compression pressure or no pressure Re-start by following the starting procedures No ignition There are some signs of ignition, nut engine can not be started Remove the spark plug again and check it. Remove carburetor after 30 minutes and connect a hose onto fuel rich circuit. Then blow the hose with air Dry spark plug Wet spark plug Blowing in normal Blowing clogged 1. No fuel in fuel tank 2. Check if the pipes, fuel tank to carburetor and intake vacuum, are clogged. 3. Float valve clogged 4. Lines in fuel tank evaporation system clogged 5. Malfunction of fuel pump 6. Loosen or damaged fuel pump vacuum hose 7. Fuel filter clogged 1. Malfunction of spark plug 2. Spark plug foul 3. Malfunction of CDI set 4. Malfunction of AC generator 5. Ignition coil is in open or short circuit 6. Ignition coil leads open or short circuit 7. Malfunction of main switch 1. Piston ring seized 2. Malfunction of cylinder valves 3. Worn cylinder and piston ring 4. Cylinder gasket leak 5. Sand hole in compression parts 1. Malfunction of throttle valve operation 2. Air sucked into intake manifold 3. Incorrect ignition timing 1. Fuel level in carburetor too high 2. Malfunction of throttle valve operation 3. Throttle valve opening too wid

YAMAHA TW125 SERVICE MANUAL

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Filed Under (Yamaha) by admin on 19-11-2010

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Dimensions: Overall length Overall width Overall height Seat height Wheelbase Minimum ground clearance Minimum turning radius 2,140 mm , 810 mm 1,120 mm , 805 mm 1,330 mm , 260 mm 2,100 mm Basic weight: With oil and full fuel tank 125 kg Engine: Engine type Cylinder arrangement Displacement Bore stroke Compression ratio Compression pressure (STD) Starting system Lubrication system: Air-cooled 4-stroke, SOHC Forward-inclined single cylinder 0.124 L (124 cm3) 57.0 48.8 mm 10.0 : 1 1,200 kPa (12.0 kg/cm2, 12.0 bar) at 1,000 r/min Electric starter Wet sump Oil type or grade: Engine oil API standard: “SE” or higher grade ACEA standard: G4 or G5 Periodic oil change With oil filter replacement Total amount 1.0 L 1.1 L 1.3 L Air filter: Wet type element Fuel: Type Fuel tank capacity Fuel reserve capacity Regular unleaded gasoline 7.0 L 1.0 L 2-2 GENERAL SPECIFICATIONS SPEC Model TW125 Carburetor: Type/quantity Manufacturer Y24P/1 TEIKEI Spark plug: Type Manufacturer Spark plug gap DR8EA NGK 0.6 0.7 mm Clutch type: Wet, multiple-disc Transmission: Primary reduction system Primary reduction ratio Secondary reduction system Secondary reduction ratio Transmission type Operation Gear ratio 1st 2nd 3rd 4th 5th Spur gear 74/20 (3.700) Chain drive 50/14 (3.571) Constant mesh 5 speed Left foot operation 36/16 (2.250) 31/21 (1.476) 27/24 (1.125) 25/27 (0.926) 23/29 (0.793) Brake: Front brake type operation Rear brake type operation Single disc brake Right hand operation Drum brake Right foot operation Suspension: Front suspension Rear suspension Telescopic fork Swingarm (Monocross) Shock absorber: Front shock absorber Rear shock absorber Coil spring/Oil damper Coil gas spring/Oil damper Wheel travel: Front wheel travel Rear wheel travel 160 mm 150 mm Electrical: Ignition system Generator system Battery type Battery capacity C.D.I. C.D.I. magneto GM 7CZ-3D 12 V 7 AH Headlight type: Bulb type Bulb wattage quantity:

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