CHAPTER 3C ENGINE 100/125/150/200 SERVICE MANUAL09.0
CHAPTER 3C ENGINE PAGE.3C - 27 -
2. Remove fuel hose and air pressure tube.
3. Remove throttle cable locknut to take out
throttle cable. Loosen inlet-valve seat
screw and air filter fixing screw to remove
carburetor.
NOTE:
Make sure the fuel in the fuel bowl is drained before
the carburetor removal lest the cylinder head be
sprinkled with the fuel, which is likely to bring about
a fire.
4. Inspect auto choke unit.
Connect yellow auto choke unit lead to the
positive pole (+) of a battery and green
lead to the negative pole (-). Some 5
minutes later, connect a pipe to idle port
and blow it with the mouth. Being blocked
up means a good condition of the unit.
Disconnect the leads from the battery.
Around 30 minutes later, blow the pipe with
the mouth or a vacuum pump. If it is
unblocked, the unit is in good condition.
5. Remove fixing screw to take out auto
choke unit.
6. Inspect auto choke unit, piston and needle
for abnormal wear. If so, replace as a set.
7. Fit auto choke unit on carburetor.
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