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TROUBLE SHOOTING
P
R
O
B
L
E
M
Throttle chock not in the correct
position for the prevailing conditions.
Fuel tank is empty.
Air cleaner element is dirty.
S
p
a
k r
Spark plug wire loose or disconnected
Engine does not start.
from plug.
Spark plug gap is incorrect.
Spark plug is defective.
Carburetor is flooded with fuel.
Faulty ignition module.
Dirt, water, or stale fuel tank.
Engine difficult to
loses pstart or ower.
Vent hole in fuel tank cap is plugged.
Air cleaner element is duty.
Spark plug is detective.
Engine operates
Spark plug gap is incorrect.
erratically.
Air cleaner element is dirty.
Air cleaner element is dirty.
Engine idles poorly.
Air slots in engine shroud are blocked. Remove debris from shots.
Cooling fins and air passages under
engine blower housing are blocked.
Engine skips at high
Gap between electrodes of spark plug
speed.
is too close.
Cooling air flow is restricted.
Engine overheats.
Incorrect spark plug.
Cutting assembly is loose.
Mower vibrates
abnormally.
Cutting assembly is unbalanced.
P
R
O
B
A
B
L
E
C
A
U
S
E
p
u l
g
o l
s o
. e
C
O
R
R
E
C
T
V I
E
Move throttle chock to correct position.
Fill tank with fuel.
Clean air cleaner element.
T
g i
h
e t
n
p s
a
k r
p
u l
g
o t
2
5
-
3
0
Install spark plug wire on spark plug.
Set gap between electrodes at 0.7 to 0.8 mm.
Install new, correctly gapped plug.
Remove air cleaner element and pull starter rope
continuously until carburetor clears itself and install
air cleaner element.
Contact SBM-Group authorised service centre.
Drain fuel and clean tank. Fill tank with clean, fresh
fuel.
Clean or replace fuel tank cap.
Clean air cleaner element.
Install new, correctly gapped plug.
Set gap between electrodes at 0.7 to 0.8 mm.
Clean air cleaner element.
Clean air cleaner element.
Remove debris from cooling fins and air passages.
Set gap between electrodes at 0.7 to 0.8 mm.
Remover any debris from slots in shroud, blower
housing, air passages.
Install RJ19LMC spark plug and cooling fins on
engine.
Tighten blade.
Balance blade.
A
C
T
O I
N
GB
N
m
.
15
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