R
epair
P 13/ 15
[4] DISASSEMBLY/ ASSEMBLY
[4]-11. Air cleaner assembly, Carburetor (cont.)
Fig. 46
See
Fig. 46
for the all components of Carburetor.
(1) Push Jet needle against Spring while holding Piston valve. Spring plate is unlocked and removed.
Check whether the engagement of E-ring to the groove of Jet needle is loose or not.
If yes, replace Jet needle with a new one. (Refer to the drawings in the dotted circle in
Fig. 46
and
Fig.
49
.)
(2) Unscrew two M4x16 Pan head screws, then remove Float body.
(3) Remove Straight pin from Float arm, then remove Float arm. Needle is removed.
When the pointed top of Needle gets worn/ looks offset as drawn in
Fig. 47
, replace it with a new one.
(4) Remove Main jet with slotted screwdriver as drawn in
Fig. 48
.
Clean the hole with a commercial carburetor cleaner or replace the main jet with a new one when it is clogged with
something.
(5) Clean the routes in Carburetor with a commercial carburetor cleaner.
After minutes from the step (5), blow away the liquid on the routes with a air gun.
(6) Assemble the above parts of Carburetor by reversing the disassembling procedure. Be careful to the order and
direction of parts and the following points.
• Jet needle has five grooves for E-ring. The third groove is factory-assembled position to set E-ring in Carburetor.
The adjustment on the proper ratio of Gasoline/ Air is necessary in accordance with the temperature fluctuation,
change the position to another. (
Fig. 49
)
• Align the groove of Piston valve with the projection in the hole on Body, then insert Piston valve into the hole of
Body. The misalignment causes the incomplete setting of Mixing cap because Piston valve gets deformed through
the hole of Body. (
Fig. 50
) After setting E-ring on Jet needle, put the E-ring between two Packings, then install
their assembled parts into Piston valve and the last, secure all the parts with Spring plate.
• Set Float in place so that the upper surface face upward. Be careful to the mark “UP”. (
Fig. 51
)
Control cable
(It doesn’t include
Carburetor. )
Cap
Cable guide
Main jet
Needle
Float arm
Float
Cap
Mixing cap
Spring
Spring plate
Packing
UP mark
E-ring
Light gasoline-ratio
Rich gasoline-ratio
Jet needle
Piston valve
Nut
Adjuster
cable
Fig. 49
Fig. 50
Fig. 51
Fig. 47
Fig. 48
REPLACING/ MAINTENANCE OF CARBURETOR
Main jet
Slotted
screwdriver
Packing
Gasket
Float body
O ring
M5x5
Wing nut
Plate
M4x16 Pan head
screw (2 pcs.)
Straight pin
Filter
(Hole on Body)
Gasket
Spring
Cock body
complete
Pan head
screw
Hose
Adjust screw
The pointed top of Needle:
The above needles are not
acceptable.
The following is normal.
gets worn
looks offset
The third groove
on Jet needle
Relation between E-ring position on
Jet needle and Gasoline/ Air ratio
Projection
Float
Groove of
Piston valve
