6.12
Carburettor Check Sheet
BOMAG
60
008 921 86
6.12 Carburettor Check Sheet
6
7
8
9
10
11
12
3
4
1
2
5
Engine speed does not incr
ease
Poor perf
or
mance a
t high speed
Unsta
ble engine speed
1
Remove foreign
materials/dirt.
Use needle B (
Ф
0.3) to clean
3
Remove foreign
materials/dirt.
Use needle A (
Ф
0.5) to clean
2
Remove foreign
materials/dirt.
4
Remove foreign
materials/dirt.
5
Remove foreign
materials/dirt.
6
Pilot jet clogged.
Main jet clogged.
Pilot jet air path clogged.
Main nozzle clogged.
Main nozzle air path clogged.
Fuel strainer screen clogged.
Blow air and
check the screen
for clogging.
Ov
erflo
w
Gasoline leaks
8
Float valve worn or coated with foreign materials/ dirt.
Remove foreign
materials/dirt.
9
Valve seat worn or coated with foreign materials/ dirt.
Remove foreign
materials/dirt.
Don't damage the seat surface
11
Check of float chamber
Water inside Float chamber cause
engine failure.
Take off Float chamber and clean.
Unsta
ble idle speed
Poor perf
or
mance a
t lo
w speed
2
Remove foreign materials/dirt.
Pilot jet air path clogged.
Use needle B (
Ф
0.3) to clean
1
Remove foreign materials/dirt.
Pilot jet clogged.
Engine does not star
t or stop
Har
d star
ting
Engine star
ts but quic
kl
y stops
3
Main jet clogged.
Remove foreign materials/dirt.
Use needle A (
Ф
0.5) to clean
4
Main nozzle clogged.
Remove foreign materials/dirt.
5
Main nozzle air path clogged.
Remove foreign materials/dirt.
6
Fuel strainer screen clogged.
Blow air and check the screen for clogging.
7
Float doesn't move properly.
Remove foreign materials around float pin.
10
For long storage of the engine
(More than 3 months).
Drain gasoline from float chamber
by running the engine until it stops
or by loosening the drain screw while
engine is stopped.
12
ON
OFF
Fuel cut solenoid valve
Connect the 12V battery to the
fuel cut solenoid valve connector
as shown.
Check the needle of the valve
should retract in.
Using of Carburetor Cleaning Kit (Kit No.07JPZ-0010000)
Carburetor cleaning kit is useful to remove foreign materials/dirt.
Needle A (
Ф
0.5) (Main jet)
Needle B (
Ф
0.3) (Pilot jet)
Pump nozzle
(Air blow to jets and Air paths)
Screw driver
(Main jet assemble/disassemble)
: Air flo
w
: Fuel flo
w
: Mixture
: Priority check Points
1
3
4
8
9
© Honda M
otor C
o
., Ltd
. C
ustomer S
er
vic
e Operations 2009.04
C
OMPRESSION
I
GNITION
F
UEL
Three
Elements
of Engine
Bef
ore inspecting the fuel system,
perf
orm the minim
um
inspection f
or compression and ignition system.
Pri
nte
d In
Be
lg
iu
m - P
ub
lis
he
d by:
Honda E
urope
NV
Eur
opean
Engine Ce
nte
r -
Spe
cifica
tions
can be
changed wit
hout no
tice
-
E
dit
ion: 7
744
Nov.
20
12
w
w
w
.hond
a
-e
ngines-
eu.
com
C
ar
bur
et
tor
Check
Shee
t
G
X
6
3
0/6
6
0/6
9
0
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