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3. INSPECTION/ADJUSTMENT

3-0

YUP 25 0

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INSPECTION/ADJUSTMENT

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SERVICE INFORMATION -------------------------------------------- 3- 1

MAINTENANCE SCHEDULE ---------------------------------------- 3- 2

FUEL LINE/FUEL FILTER ------------------------------------------- 3- 3

THROTTLE OPERATION --------------------------------------------- 3- 3

ENGINE OIL ------------------------------------------------------------ 3- 4

AIR CLEANER ---------------------------------------------------------- 3- 5

SPARK PLUG ----------------------------------------------------------- 3- 5

VALVE CLEARANCE ------------------------------------------------- 3- 6

CARBURETOR IDLE SPEED ----------------------------------------- 3- 6

CYLINDER COMPRESSION ------------------------------------------ 3- 7

FINAL REDUCTION GEAR OIL ------------------------------------- 3- 8

DRIVE BELT ------------------------------------------------------------ 3- 8

HEADLIGHT AIM ------------------------------------------------------ 3- 9

CLUTCH SHOE WEAR ------------------------------------------------ 3- 9

COOLING SYSTEM ---------------------------------------------------- 3- 9

BRAKE SYSTEM ------------------------------------------------------- 3-10

NUTS/BOLTS/FASTENERS------------------------------------------- 3-11

WHEELS/TIRES -------------------------------------------------------- 3-11

STEERING HANDLEBAR; SUSPENSION -------------------------- 3-11

Summary of content (12 pages)

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3.
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3. INSPECTION/ADJUSTMENT YUP 250 SERVICE INFORMATION GENERAL ð WARNING •Before running the engine, make sure that the working area is well ventilated. Never run the engine in a closed area. The exhaust contains poisonous carbon monoxide gas, which may cause death to people. •Gasoline is extremely flammable and is explosive under some conditions. The working area must be well ventilated and do not smoke or allow flames or sparks near the working area or fuel storage area.
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. INSPECTION/ADJUSTMENT YUP 250 MAINTENANCE SCHEDULE Perform the periodic maintenance at each scheduled maintenance period. I: Inspect, and Clean, Adjust, Lubricate or Replace if necessary.
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3. INSPECTION/ADJUSTMENT YUP 250 Fuel Filter FUEL LINE/FUEL FILTER Remove the right side cover. (!2-5) Check the fuel lines and replace any parts, which show signs of deterioration, damage or leakage. Check for dirty or clogged fuel filter and replace with a new one if it is clogged. ＊ • Do not smoke or allow flames or sparks in your working area. Fuel Line THROTTLE OPERATION Check the throttle grip for smooth movement. Measure the throttle grip free play. Free Play: 2_ 6mm Remove the met-in box.
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3. INSPECTION/ADJUSTMENT YUP 250 Oil Dipstick ENGINE OIL OIL LEVEL INSPECTION Stop the engine and support the scooter upright on level ground by its main stand. Wait for 2_ 3 minutes and check the oil level with the dipstick. Do not screw in the dipstick when making this check. Oil Drain Bolt OIL CHANGE ＊ • Drain the oil while the engine is warm. Remove the oil drain bolt to drain the engine oil. Install the aluminum washer and tighten the oil drain bolt. Torque: 14.
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3. INSPECTION/ADJUSTMENT YUP 250 Air Cleaner Case Cover AIR CLEANER Remove the eight air cleaner case cover screws and the air cleaner case cover. Screws Air Cleaner Element Remove the air cleaner element. Check the element and replace it if it is excessively dirty or damaged. CHANGE INTERVAL More frequent replacement is required when riding in unusually dusty or rainy areas. ＊• The air cleaner element has a viscous type paper element. Do not clean it with compressed air.
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3. INSPECTION/ADJUSTMENT VALVE CLEARANCE YUP 250 Cylinder Head Cover Bolts ＊ • Inspect and adjust valve clearance while the engine is cold (below 35℃ ). Remove the met-in box (!2-6) and center cover. (!2-7) Remove two nuts and four bolts on the cylinder head. Place the scooter on its side stand for remove the cylinder head cover. Turn the A.C.
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3. INSPECTION/ADJUSTMENT YUP 250 CYLINDER COMPRESSION Warm up the engine before compression test. Remove the center cover and spark plug cap. Remove the spark plug. Insert a compression gauge. Open the throttle valves fully and pushes the starter button to test the compression. Compression: 16.
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3. INSPECTION/ADJUSTMENT FINAL REDUCTION GEAR OIL YUP 250 Oil Check Bolt Hole/Oil Filler ＊ • Place the scooter on its main stand on level ground. Stop the engine and remove the oil checks bolt. The oil level shall be at the oil check blowhole. If the oil level is low, add the recommended oil SAE90# to the proper level. Install the oil check bolt. ＊ • Make sure that the sealing washer is in Oil Drain Bolt/Sealing Washer good condition. GEAR OIL CHANGE Remove the oil check bolt.
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3. INSPECTION/ADJUSTMENT YUP 250 HEADLIGHT AIM Turn the ignition switch ON. Turn on the headlight switch. Adjust the headlight aim by turning the headlight aim adjusting bolt. Headlight Aim Adjusting Bolt CLUTCH SHOE WEAR Start the engine and check the clutch operation by increasing the engine speed gradually. If the motorcycle tends to creep or the engine stalls, check the clutch shoes for wear and replace if necessary.
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3. INSPECTION/ADJUSTMENT Remove the front cover. Remove the radiator cap. Remove the drain bolt to drain the coolant and tilt the scooter to the right and the coolant will drain more easily. Drain the coolant in the reserve tank. Reinstall the drain bolt. Fill the radiator coolant. YUP 250 Radiator Cap ＊ • The coolant freezing point should be 5℃ lower than the temperature of the riding area. Start the engine and check if there are no bubbles in the coolant and the coolant level is stable.
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3. INSPECTION/ADJUSTMENT YUP 250 NUTS/BOLTS/FASTENERS Check all important chassis nuts and bolts for looseness. Tighten them to their specified torque values if any looseness is found. WHEELS/TIRES Pressure Gauge Check the tires for cuts, imbedded nails or other damages. Check the tire pressure. ＊ • Tire pressure should be checked when tires are cold. Tire Pressure 1 Rider 2 Riders Front 1.75kg/cm_ 2.0kg/cm_ Rear 2.25kg/cm_ 2.