t21O721B
CHECKING FUEL LINES (U)
(1) Fuel Pipe (2) Fuel Hose Clamp
Although checking the fuel pipe con-
nection is recommended every 100
service hours, it should be done ev-
ery 6 months if operation does not
exceed 100 hours in 6 months.
1. If the hose clamps are loose, ap-
ply a slight coat of lubricant onto
the threads and securely tighten
it.
2. The fuel pipe is made of rubber and
ages regardless of period of ser-
vice. Change the fuel pipe together
with the hose clamps every two
years and securely tighten.
3. If the fuel pipes and hose clamps
are found damaged or deterio-
rated earlier than two years, then
change them immediately.
4. A fte r the f u el p i pe a n d ho s e
clamps have been changed, bleed
the fuel system.
Stop the engine when check-
ing the items above.
Inspect the fuel pipe regularly.
The fuel pipes are subject to
wear and aging. Failure to per-
form periodic inspections may
lead to a fuel leak. Fuel leaking
on a hot engine could cause a
re.
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WARNING
When disconnecting the fuel
pipe for replacement, plug
both ends with cloth or paper
to prevent dust or foreign ma-
terial from entering it. Other-
wise, the fuel injection pump
can be damaged. Pay extra
caution to the fuel pump to
prevent dust from entering it.
It is hard to start the engine
again with the empty fuel tank.
In this case, bleed and pump
the system using the bleeding
bolt on the top of the fuel lter
before starting the engine.
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IMPORTANT