Hyundai HYSG150, User Manual, Page: 22 / 28

after proper belt adjustment is achieved).To check belt tension, you should be
able to depress the belt down about 6 to 10 mm from the original position.
8.11.4. To extend belt life, proper tension must be maintained. A loose belt will cause
excessive cutting blade slippage and belt premature failure. A belt that is
too tight can cause bearing, shaft and belt failure.
9. TROUBLESHOOTING
SYMPTOM CAUSE ACTION
The engine
will not start
Fuel system
Fuel valve closed Open the fuel valve
Choke valve open
Close the choke when starting
cold engine
Fuel tank empty Check and fill with fuel
Machine stored incorrectly
with regards to emptying fuel
system
Check and clean fuel tank of
sludge, fuel lines & carburetor.
Refill with fresh fuel
Water or ice in fuel system
Carburetor problem
Contact your dealer
Spark plug
Incorrect spark plug Replace with correct plug
Dirt carbon build up on
electrodes
Clean and check spark plug
gap, replace as required
Short circuit Replace with correct plug
Petrol/oil on spark plug
Clean the spark plug, allow any
excess fuel to evaporate. Start
with full throttle
No spark after
service
Faulty engine switch Contact your dealer
Low
compression
Serious internal engine
damage or faulty valves
Contact your dealer
Engine lacks
power or runs
unevenly
Air filter Clogged air filter Clean or replace as required
Fuel system
Machine stored incorrectly
with regards to emptying fuel
system
Check and clean fuel tank of
sludge, fuel lines & carburetor.
Refill with fresh fuel
Blue exhaust – lots of
Blue/White exhaust smoke
Tank filled with 2 stroke oil
fuel mixture.
Tank filled with diesel
Clean tank, sludge reservoir
and empty carburetor.
Fill the tank with proper fuel.
Open choke valve.
Clean or replace the air filter.
Black exhaust
Choke left ON
Clogged air filter
Carburetor problems
Move choke to correct
position
Clean air filter
Clean carburetor
If no success contact dealer
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