Suzuki DF70A Service Manual page 40

0B-14 Maintenance and Tune-Up:
Breather Line and Fuel Line Inspection
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Inspect breather line and fuel line
Initially after 20 hours (1 month) and every 50 hours (3 months)
Replace breather line and fuel line
Every 2 years
If leakage, cracks, swelling or other damage is found, replace the breather hose and/or fuel line.
Fuel line check point
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