Pentair MasterTemp High Performance Eco-Friendly Pool Heater, Natural Gas, 250K BTU || 460732 & Collars Tools these shafts and gears would

these shafts and gears would be far too loose and could potentially become knocked out of position

then the flow is too high

Face Seal O-Ring

the wires on the Pressure Switch should read continuity on an electrical meter

Pentair MasterTemp High Performance Eco-Friendly Pool Heater, Natural Gas, 250K BTU || 460732 & Collars Tools these shafts and gears wouldPentair MasterTemp High Performance Eco Friendly Pool Heater, Natural Gas, 250K BTU 460732 Pentair MasterTemp Heaters offer all the efficiency, convenience, and reliability features you want in a pool heater, plus a lot more fast heat up, compact design, super quiet operation, and ease of use. Features: Heats up fast, so no long waits before enjoying your pool or spa Best in class energy efficiency Manual gas shut off when service is required