Low Output - Hyundai HDBT521T Original Instructions Manual

TROUBLESHOOTING GUIDE

2. LOW OUTPUT

symptom
flameout when speedup
the smoke is thin,
carburetor spout backward
compress press is shortage
engine leak
the end of two crank shaft leak
3. ENGINE RUNNING UNSTABLE
symptom
there are metal knock sound
there are metal knock sound
engine ignition break off
4. THE ENGINE SUDDENLY STOPPED
probable cause
fuel is use up
spark plug fouled with oily deposits and short
circuit
high voltage wire fall off
probable cause
fuel filter obstruct,
fall short of fuel
muffler fouled with
deposits
piston、piston ring、
cylinder attrite、
Conjoint surface of the
Cylinder and crank cast leak
the seal is bad
engine overheats
burning room fouled with
oily deposits
probable cause
piston、piston ring、
cylinder attrite、
piston pin、piston attrite
bearing of crank shaft attrite
engine overheats
burning room fouled with
oily deposits
gasoline branded is unfit
there is water in fuel
spark gap is wrong
coil gap is wrong
remedy
add fuel
clean the oily deposits
connect
remedy
clean fuel filter、 clean fuel road、
adjust carburetor
oily clean the oily deposits
replace piston、piston ring
repair
replace seal
avoid use it for long time、
high speed and heavy load
clean the oily deposits
remedy
replace piston、piston ring
replace piston pin、piston
replace bearing
avoid use it for long time、
high speed and heavy load clean
the oily deposits
replace require branded octane
instead fuel
adjust spark gap 0.6-0.7mm
adjust coil gap 0.3-0.4mm
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