Lanair MX200 - Manual (Page 30)

Section 10 - Priming The Fuel Pump
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15.
16.
Adjust the burner air filter/regulator to 15 PSI.
If the fuel supply pump prime, or fuel stream has air in it (spurting, fluctuating flow) there
is likely a leak in the suction side of the plumbing. Refer to section 14, trouble-shooting,
flow chart #2. The burner should now be ready to fire.