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25
Cleaning the fuel filter
●
Clogged fuel filter may cause difficulty of start-up or failure of engine speed
increase.
●
Check the fuel filter regularly as follows:
1. Remove the fuel tank cap (1), drain the fuel to empty the tank. Check the tank
inside for any foreign materials. If any, wipe clean such materials.
2. Pull out the fuel filter (2) with wire through the fuel filling port.
3. If the fuel filter surface is contaminated, clean it with gasoline. Foul gasoline must
be disposed of according to the method specified by each local authority.
Excessively foul filter must be replaced.
4. Reset the fuel filter in the fuel tank and tighten firmly the fuel tank cap.
NOTE:
●
When resetting the fuel filter in the tank, return it to the position as shown in the
figure.
For replacement, contact your authorized service center.
(1)
(2)
(2)
(4)
(3)
(2)
(1)
Cleaning the joint pipe cleaner element
1. Remove the hose band (1) and the hose (2).
2. Pull out the element (3) and remove any dirt form it with a brush.
If it is difficult to pull out the element, use a slender stick to catch it out.
3. Replace the element with a new one if it is damaged or very dirty.
4. Press the element into the joint pipe (4) until the element tail is flush with its port
end.
5. Install the hose and secure it with a hose band.
Replacement of solution hose
●
Check the solution hose (1) frequently. Damaged hose may result in leakage of
chemical solution. Replace the hose if necessary as follows.
1. Remove the nozzle (2) from the pipe (3).
2. Loosen the hose band, and then replace the old hose with new one.
Inspection of bolts, nuts and screws
●
Retighten loose bolts, nuts, etc.
●
Check for fuel and oil leakage.
●
Replace damaged parts with new ones for safety operation.
Replacement of gaskets and packings
In reassembling after the engine is dismounted, be sure to replace the gaskets and
packings with new ones.
(3)
(2)
(1)
Summary of Contents for SP-7650.4 R
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