Troubleshooting
Problem
Cause
Solution
The spark plug doesn't
produce a spark
Spark
p
lug
Deposits on the spark plug
.
Spark plug gap too big or too
small
.
Spark plug insulator
damaged
.
Clear
the d
eposit
s.
Adjust to 0.7-0.8
.
Replace the
spark plug
.
Other
Igniter damaged
Flywheel magnetic force
we
a
k
.
Replace
igniter
.
Replace
flywheel
.
The spark plug produces a
spark
Good compression
Too much fuel in the
cylinder.
Improper f
uel
or water or
dirt in the fuel.
Screw out spark plug, dry and
screw in.
Change
fuel
.
No gasoline flowing out after
screwing off drain screw at
the bottom of the
carburetor
Pin valve blocked
Wash or
replace
carburettor
Oil supply normal
but
poor compression
Piston ring worn
.
Spark plug
loose.
Cylinder head leaking, valve
gap or timing wrong
.
Replace.
Screw in tightly
.
Clear, reinstall or readjust
.
Ignit
ion
and
gasoline supply
normal
Poor contact of high contact
cable with the spark plug.
Stopping switch malfunction
or short circuit.
Machine oil alarm damaged.
Eliminate and correct
.
Eliminate
.
Replace.
Speed or power insufficiency Choke no
t
opening
.
Muffler
v
entilation is poor
.
Moving parts are worn
.
Governor kit
isn't
reach
ing
optimum balance
.
Ignit
ion
energy too low
.
Valve gap too big
.
Cylinder head existing carbon
deposit
.
Open the choke
.
Replace
the muffler
.
Check or replace
.
Adjust the governor kit
.
Replace
the igniter or
replace
the flywheel.
Adjust to specified range
.
Clear the carbon deposit.
Speed weaving too big
Governor kit
isn't
reach
ing
optimum matching state
.
Wrong carburetor
.
Spark plug gap not correct
.
Adjust the governor kit
.
Replace
the carburetor
.
Adjust the gap
.
Speed too high
Governor bar no
t
pressing
the governor slider tight or
governor slider off.
Readjust or assemble the
governor slider.
Abnormal sound
Improper
valve gap
.
Cam gear is damaged
.
Adjust the valve gap
.
Replace
the camshaft
.
Carburetor leakage
Pin valve sticking
due to dirt
build-up.
Lightly tap carburetor or
clean
.
O-
r
ing deformed
.
Replace.
EN
WWW.NIKOLAOUTOOLS.GR
10
Summary of Contents for NS4010
Page 1: ...NS4010 WWW NIKOLAOUTOOLS GR ART NO 032861 FR RO el SL EN IT BG HR 2 2...
Page 32: ...1 6 8 7 2 3 4 5 9 EL WWW NIKOLAOUTOOLS GR 32...
Page 33: ...soft start OHV25 Service 5 6 7 8 9 10 11 1 2 3 4 EL WWW NIKOLAOUTOOLS GR 33...
Page 36: ...OFF 2 3 OFF 1 2 7 6 7 7 7 8 1 2 3 7 4 1 3 1 2 3 4 7 5 EL 1 2 3 4 5 6 7 WWW NIKOLAOUTOOLS GR 36...
Page 38: ...100 B 1 2 9 1 1 2 3 9 2 1 2 0 7 0 8mm B 25 50 0 7 0 8mm EL WWW NIKOLAOUTOOLS GR 38...
Page 39: ...0 7 0 8mm EL WWW NIKOLAOUTOOLS GR 39...
Page 40: ...1 2 3 4 5 21 35 6 7 1 10 50 70 2 3 30 40 4 2 3 5 2 3 2 A 1 2 3 1 2 EL WWW NIKOLAOUTOOLS GR 40...
Page 41: ...1 6 8 7 2 3 4 5 9 BG WWW NIKOLAOUTOOLS GR 41...
Page 42: ...BG OHV25 1 2 3 4 5 6 7 8 9 10 11 WWW NIKOLAOUTOOLS GR 42...
Page 43: ...BG CO CH 1 m 10 m 196 4 6 5 14 22 25 40 bar 7 1 WWW NIKOLAOUTOOLS GR 43...
Page 44: ...BG 41 1 6 8 9 2 9 7 7 3 4 5 6 SAE 10W 30 7 2 1 2 3 1 2 3 7 3 WWW NIKOLAOUTOOLS GR 44...
Page 45: ...BG 7 4 1 2 3 4 5 6 7 a b 1 2 3 4 1 2 7 6 7 7 OFF 2 3 OFF 7 5 1 3 WWW NIKOLAOUTOOLS GR 45...
Page 48: ...BG 1 2 WWW NIKOLAOUTOOLS GR 48...
