Troubleshooting - BBT -BC-26CCBH Owner's Manual

1. Failure to Start
CHECK
Spark Plug
Spark normal
Cylinder
Compress
Pressure
Normal
Fuel System
Normal
Fuel Ignition
System System
Normal Normal
2. Low Output
CHECK
Flameout when speedup
The smoke is thin
Compression shortage
Engine leak
Rocket cover leak
3. Engine Running Unstable
CHECK
There is a knock sound in engine
There is a metal knock sound
Engine ignition break off
4. The Engine Suddenly Stopped
PROBABLE CAUSES
Fuel is empty
Spark plug fouled with oily deposits and short circuit
High voltage wire disconnected off
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TROUBLESHOOTING

Fuel System abnormality
Fuel System
Fuel
abnormality
High Voltage
Wire Spark Spark plug
Normal
High Voltage
Wire Spark Abnormality
Compress is shortage
Compress Normal
PROBABLE CAUSES
Fuel filter obstruct, fall short of fuel
Muffler fouled with oily deposits
Piston, piston ring, cylinder attrite
Conjoint surface of the cylinder and crankcase
leak
The seal is bad
Engine overheats burning, room fouled with
oily deposits
PROBABLE CAUSES
Piston, piston ring, cylinder attrite
Piston pin, piston attrite
Bearing of crankshaft attrite
Engine overheats
Burning, room fouled with oily deposits
Fuel brand is unfit
There is water in fuel
Spark plug gap is wrong
Coil gap is wrong
PROBABLE CAUSES
There is no fuel in tank
Fuel filter obstruction
Fuel is too dirty
There is water in fuel
There is too much fuel in
cylinder
Mixture ratio is incorrect
Spark plug fouled with oily
deposits
Spark plug insulation damage
Spark plug gap is too large or
small
High voltage wire breach or
break off
Coil looseness
Piston ring attrite
Piston ring is broken
Piston ring cementation
Spark plug looseness
Conjoint surface of the cylinder
and crankcase leak
High voltage wire and spark
plug contact bad
Stop switch failure or short
circuit
ACTION
Clean fuel filter, adjust carburettor
Clean the oily deposits
Replace piston, piston ring
Repair
Replace seal
Avoid using for long periods of time, high speed
and heavy load, clean the oily deposits
ACTION
Replace piston, piston ring
Replace piston pin, piston
Replace bearing
Avoid using for long periods of time or high
speed and heavy load
Clean the oily deposits
Replace require branded octane
Replace fuel
Adjust spark gap 0.6-0.7mm
Adjust coil gap 0.3-0.4mm
ACTION
Add fuel
Clean the oily deposits
Connect
BBT-BC-26CCBH, BBT-BC-26CCDH, BBT-BC-52CCBH
ACTION
Add fuel in tank
Clean fuel filter
Replace fuel
Replace fuel
Tear down spark plug and dry it
Mixture proportion
Clean the oily deposits
Replace spark plug
Adjust spark plug gap 0.6-0.7mm
Replace or tighten
Tighten
Replace with new
Replace
Eliminate
Tighten
Eliminate
Tighten the spark plug cap
Repair or replace