Ignition Maintenance

Shows the testing of spark plugs under pressure condition, materials, equipment, and tools necessary, preparation, procedure, observation of spark operation at stated pressures, preparing accepted plugs for storage, and clean-up after testing. Maintenance of Storage Batteries. (55 pictures-51 frames) Jam Handy. Propeller installation; periodic inspection and service; hydrometer electrolyte check; weather conditions affecting service; recharging procedure; storage at various temperatures.