Branson 00 series Operator's Manual page 75

12. PIPES
【Otherwise】
There is a risk of fire.
Check for damage to fuel hoses, steering wheel hoses
(pipe), and radiator hoses, and see if there is any leakage
or loosening of bolts.
Replace the pipes and hoses every two years even though
they are not damaged.
[Precaution]
When replacing the fuel hose, drain air.
Inspect the condition of the fuel hoses and check for fuel
leakage from any damaged parts of the hoses
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