15 / 20
in order at which they were minding the front side and the back side. Fastening torque of the four screws is
0.8N
･
m.
Remove the 4 screws, Plate 2, Sheet 3, and 4 (See Fig.15). Check Sheet 3 and 4 (Fig.15) for any
deformation and hardening. Replace it in case of deformation and hardening. Reassemble the carburetor
placing the parts in order at which they were minding the front side and the back side. Fastening torque of
the four screws is 0.8N
･
m.
In case the performance does not improve after the maintenance, replace the carburetor.
Visit the following for further inspection and maintenance.
WARNING
When you wash the parts with gasoline or kerosene, carry out the work only outdoors or in well ventilated
area away from any source of fire to prevent a fire.
⑧
Inspection and maintenance of the generator
i) Dismount the generator from the engine. Check the generator including connectors, lead wires for any
damages. If there are any damages, replace the part.
ii) Remove the driven pulley 3G16 and the generator adapter from
the generator. Measure the diameter shown in Fig.16 at 12mm
from the shaft end with a blade micrometer. In case the diameter
is φ7.960 or less, replace the shaft.
iii) The generator shaft and the ball bearings of the generator
adapter need to be glued with adhesive such as LOCTITE®601.
Lubricate the ball bearings with machine oil (viscosity ISO VG68
～
100) after wash.
⑨
Inspection of the starter motor
i) Dismount the starter motor from the engine. Check the motor including connectors, lead wires for any
damages. If there are any damages, replace the part.
ii) Measure looseness of the shaft with a dial indicator. In case the value is more than 1.0mm (thrust) and
0.05mm (radial), replace the shaft.
iii) Measure the gap between the Brush end face and the Brush guide end face (Fig. 17) with a pair of Vernier
caliper. In case the gap is 5.0mm or more, replace the starter motor.
