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Summary of Contents for TILLOTSON HS Series
- Page 1 TILLOTSON LTD., CLASH INDUSTRIAL ESTATE, TRALEE, CO. KERRY, IRELAND PHONE: +353 66 7121911 FAX: +353 66 7124503 e-mail: sales@tillotson.ie SERVICE MANUAL...
- Page 2 INTRODUCTION The demand for a miniature all position diaphragm Information contained in the following pages is carburetor prompted Tillotson to design and develop presented as an aid to understanding construction, the “HS” series. This small compact unit, only a 1-1/2 operation and servicing of the “HS”...
- Page 3 exerts a pre-determined force on the inlet control The inlet control lever hooks on the center of the lever, which holds the needle on its seat. metering diaphragm and a self tapping screw holds the fulcrum pin place. A metering diaphragm is subjected to engine suction on the metering chamber side and atmospheric Movement of the pump diaphragm is caused by pressure on the vented side.
- Page 4 OPERATIONAL DATA STARTING (CHOKE) OPERATION Starting an engine with the “HS” Carburetor involves port, creating a low pressure area on the fuel side of the same methods used in a conventional float feed the main diaphragm. Atmosphere air pressure on the carburetor.
- Page 5 INTERMEDIATE OPERATION Fuel is delivered into and through the carburetor in venturi creates a low pressure area at the venturi the same manner as when the engine is idling. throat and diminishes the suction on engine side of However, as the throttle opens and the engine speed the throttle shutter.
- Page 6 SERVICE DATA SERVICE HINTS Be certain both diaphragms are installed correctly - pump diaphragm next to the metering body, then the gasket – the main diaphragm gasket, then the main diaphragm. Evenly tighten all screws to insure complete seal. CAUTION: When reassembling the inlet control lever and spring, care should be taken to see that the spring rests in Under extreme conditions of...
- Page 7 TROUBLE DATA TROUBLE PROBLEM REMEDY Dirt or foreign particles preventing Remove, clean and replace CARBURETOR inlet needle from seating. FLOODS Diaphragm lever spring not seated on lever dimple Remove lever and reinstall Diaphragm improperly installed in Replace diaphragm or correct carburetor installation.
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