Husqvarna Rider ProFlex 21 II Workshop Manual page 88

For Husqvarna Parts Call 606-678-9623 or 606-561-4983
Ignition fault
Engine runs unevenly or
feels weak
Fuel fault
Incorrect fuel type.
Petrol too old.
Low octane number after
long storage.
Replace petrol
Exhaust
Choking
Strong Blue Black
fumes:
Check choke cable and
choke valve
Engine damage
Perform compression test
Overloading
Change driving style
Ignition fault
Engine overheating
Carburettor problems
Insufficient cooling
Spark plug defective
Incorrect ignition setting
Diode failure (V-twin engine)
Replace diode
Too little fuel in tank
Soiled fuel filter
Dirt in fuel hose
Constricted or badly sealed
fuel hose
Faulty carburettor
Tank ventilator blocked
Blocked air filter
Spark plug has wrong
thermal value
Pre-ignition incorrect
Diode failure (V-twin engine)
Incorrect setting
Partially or completely
blocked needles and
diffuser jets
Too little or no oil in the
engine
Blocked cooling fins or air
intake
Cooling fan damaged
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Clean, adjust, or replace
Extremely worn or blocked
plug
Replace with spark plug
Incorrect thermal value
with right thermal value
Check and adjust
Incorrect electrode gap
electrode gap
Incorrect pre-ignition Adjust pre-ignition
position
Fill fuel tank
Change filter
Clean or replace fuel hose
Correct the carburettor
Incorrect settings
setting
Clean carburettor with
Blocked needles
compressed air
Clean or replace fuel cap
Clean or replace filter
Replace with right spark
plug
Correct ignition setting
Replace diode
Correct setting
Clean carburettor with
compressed air
Fill with right quality and
amount of oil
Clean out dirt and leaves
Replace fan and clean fan
cover