WangYe WY50QT-28A, Руководство пользователя

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- 21 -
Chart 4
Complaint Symptom and possible causes solution
Octane value of the fuel is too low Change fuel
Oil path stop up Clean oil path
Ignition time is too early or too late Check coil and change CDI
Spark too weak or flameout Check ignition and clear out
Mixed air too dense or race Clean& adjust carburetor
Engine leak Check and clear out
Muffler stop up Dredge
Belt wear
Replace
The vehicle
is unable to
accelerate
performance
badly
Automatic clutch roller wearing
Replace
Clutch worn
Replace
Starting relay worn
Replace
Electric
start failure
Electric quantity lack Charge
Turning bearing gap too wide
Adjust
Lack of tire pressure Pump
Driving
unsteady
Front& rear Axle flexible
Tighten nut
Brake pad fray to limit
Replace
Brake cam fray
Replace
Brake cable damaged
Replace
Brake
Failure
Free path overlong Adjust
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Cleaning air filter
（
Fig 22
）
1 Take out rear protecting bar left protecting bar
2 Take apart air filter cover and screw up bolt.
3 Take out filter element
4 Compress air or use dry brush to clean filter element.
•
Do the above opposite to reinstall the air filter.
NOTICE:
Do not use gasoline or low burning
point solvent to clean paper filter element.
Maintenance battery (Fig 23)
It is adopted the airtight battery (don
’
t add
water).
Notice: Do not take apart the airtight
battery upper cover
Fig22
Fig23