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3. INSPECTION/ADJUSTMENT

3-0

MX’er 50

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INSPECTION/ADJUSTMENT

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

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

FUEL LINE/THROTTLE OPERATION/AIR CLEANER ---------- 3- 3

SPARK PLUG/LUBRICATION SYSTEM---------------------------- 3- 5

CARBURETOR IDLE SPEED ----------------------------------------- 3- 7

CYLINDER COMPRESSION/FINAL REDUCTION GEAR OIL-- 3- 8

DRIVE BELT/BRAKE SHOE/BRAKE SYSTEM ------------------- 3- 9

HEADLIGHT AIM ------------------------------------------------------ 3-11

STEERING SYSTEM INSPECTION --------------------------------- 3-11

TOE-IN ADJUSTMENT------------------------------------------------ 3-12

WHEELS/TIRES -------------------------------------------------------- 3-13

DRIVE CHAIN SLACK ADJUSTMENT ----------------------------- 3-14

CABLE INSPECTION AND LUBRICATION ----------------------- 3-16

FRONT SUSPENSION LUBRICATION------------------------------ 3-16

Summary of content (17 pages)

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3.
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3. INSPECTION/ADJUSTMENT MX’er 50 SERVICE INFORMATION GENERAL °I 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 MX’er 50 MAINTENANCE SCHEDULE This chapter includes all information necessary to perform recommended inspections and adjustments. These preventive maintenance procedures, if followed, will ensure more reliable vehicle operation and a longer service life. The need for costly overhaul work will be greatly reduced. This information applies to vehicles already in service ad well as new vehicles that are being prepared for sale.
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3. INSPECTION/ADJUSTMENT MX’er 50 FUEL LINE Check the fuel tubes and replace any parts, which show signs of deterioration, damage or leakage or leakage. °ØDo not smoke or allow flames or sparks in your working area. THROTTLE OPERATION Fuel tube Fuel Filter Check the throttle to swing for smooth movement. Measure the throttle to swing free play. Free Play: 1_ 4mm Minor adjustment is made with the adjusting nut at the throttle to swing above.
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3. INSPECTION/ADJUSTMENT MX’er 50 CLEAN AIR FILTER ELEMENT Wash the element gently, but throughly in solvent. °ØUse parts cleaning solvent only. Never use gasoline or low flash point solvents which may lead to a fire or explosion. Squeeze the excess solvent out of the element and let dry. °ØDo not twist or wring out the foam element. This could damage the foam material. Apply the engine oil. Squeeze out the excess oil. °ØThe element should be wet but not dripping.
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3. INSPECTION/ADJUSTMENT MX’er 50 SPARK PLUG Remove the spark plug Check the spark plug for wear and fouling deposits. Clean any fouling deposits with a spark plug cleaner or a wire brush. Specified Spark Plug: NGK: BR8HAS Measure the spark plug gap. Spark Plug Gap: 0.6_ 0.7mm Gap, Wear, and Fouling Deposits °ØWhen installing, first screw in the spark plug by hand and then tighten it with a spark plug wrench.
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3. INSPECTION/ADJUSTMENT MX’er 50 Clean the oil filter screen with compressed air. Install the oil filter in the reverse order of removal and fill the oil tank with specified oil up to the proper level. Bleed air from the oil pump and oil lines. Filter Screen °Ø• Connect the oil tubes securely. • Install the tube clip at the oil tank side and also install the clip to the lower oil tube that goes to the oil pump. • Check for oil leaks.
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3. INSPECTION/ADJUSTMENT MX’er 50 Throttle Stop Screw CARBURETOR IDLE SPEED °Ø• The engine must be warm for accurate idle speed inspection and adjustment. Warm up the engine before this operation. Start the engine and connect a tachometer. Turn the throttle stop screw to obtain the specified idle speed. Idle Speed: 2000±100rpm When the engine misses or run erratic, adjust the air screw. Air Screw °mIgnition Apparatus°n °ØThe CDI ignition timing is not adjust- able.
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3. INSPECTION/ADJUSTMENT MX’er 50 CYLINDER COMPRESSION Warm up the engine before compression test. Remove the spark plug. Insert a compression gauge. Open the throttle valve fully and push the starter button to test the compression.
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3. INSPECTION/ADJUSTMENT MX’er 50 DRIVE BELT Remove the left crankcase cover. Inspect the drive belt for cracks, scaling, chipping or excessive wear. Measure the V-belt width Service limit: 16.5mm Replace the drive belt if out of specification. Drive Belt BRAKE SHOE Wear Indicator Replace the brake shoes if the arrow on the wear indicator plate aligns with the punch mark on the brake panel when the brake is fully applied. Punch Mark BRAKE SYSTEM FRONT BRAKE Measure the front brake lever free play.
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3. INSPECTION/ADJUSTMENT Adjust brake lever free play: Loosen the lock nuts. Turn the adjusters in or out until the specified free play is obtained. Turning adjusters in that the free play is increased. Turning adjusters out that the free play is decreased. MX’er 50 Lock Nuts Adjusters The difference between both clearances should be 2 mm or less when front brake is applied. Tighten the lock nuts. °ØMake sure that the brake does not drag after adjusting.
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3. INSPECTION/ADJUSTMENT MX’er 50 HEADLIGHT AIM Turn the ignition switch ON and start the engine. Turn on the headlight switch. Adjust the headlight aim by turning the headlight aim adjusting screw. Adjusting Screw STEERING SYSTEM INSPECTION Place the machine on a level place. Check the steering column bushings and bearings: Move the handlebar up and down, and/or back and forth.
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3. INSPECTION/ADJUSTMENT TOE-IN ADJUSTMENT Place the machine on a level place. Measure the toe-in Adjust if out of specification. Toe-in measurement steps: Mark both front tire tread centers. Raise the front end of the machine so that there is no weight on the front tires. Fix the handlebar straight ahead. Measure the width A between the marks. Rotate the front tires 180 degrees until the marks come exactly opposite. Measure the width B between the marks. Calculate the toe-in using the formula given below.
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3. INSPECTION/ADJUSTMENT MX’er 50 WHEELS/TIRES Check the tires for cuts, imbedded nails or other damages. Check the tire pressure. °ØTire pressure should be checked when tires are cold. Front Axle Nut TIRE PRESSURE 1 Rider Front 0.35kgf/cm_ Rear 0.35kgf/cm_ TIRE SIZE Front : 20*7-8 Rear : 22*10-8 Check the front axle nut for looseness. Check the rear axle nut for looseness. If the axle nuts are loose, tighten them to the specified torque. Torque: Front : 6.0_ 8.0kgf-m Rear : 6.0_ 8.
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3. INSPECTION/ADJUSTMENT MX’er 50 Inspect the wheel. Replace if damage or bends Always balance the wheel when a tire or wheel has been changed or replaced. °Ø• Never attempt even small repairs to the wheel. • Ride conservatively after installing a tire to allow it to seat itself properly on the rim. DRIVE CHAIN SLACK ADJUSTMENT Before checking and/or adjusting, rotate the rear wheels several revolutions and check slack at several points to find the tightest point.
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3. INSPECTION/ADJUSTMENT MX’er 50 Adjuster Turn the adjuster in or out until the specified slack is obtained. Turn in: Slack is increased. Turn out: Slack is decreased. Tighten four bolts attaching rear axle hub to the specification. While pushing up or down on the chain to zero slack. Torque: 6.0_ 8.0kgf-m Bolts Adjuster Tighten the adjuster. Torque: 1.8_ 2.
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3. INSPECTION/ADJUSTMENT MX’er 50 CABLE INSPECTION AND LUBRICATION °ØDamaged cable sheath may cause corrosion and interfere with the cable movement. An unsafe condition may result so replace such cable as soon as possible. Inspect the cable sheath. Replace if damage. Check the cable operation. Lubricate or replace if unsmooth operation. °ØHold cable end high and apply several drops of lubricant to cable. LEVER LUBRICATION Lubricate the pivoting parts of each lever.