Twelve & Fifteen Repair Manual — Text — Page 46

SONS AV Peewee: Ba a I a a ia tea cd CHECKING FOR LEAKS (See Drawing 22B) Close outlet orifice by the use of a plug 12 mm. 100 pitch. To the inlet orifice fit a petrol pipe with union nut such as is fitted when on a car. Submerge pump completely into a tank or container of clean petrol. Force air into pipe at a pressure between 100 and to 42 lbs. per sq. in.) Air bubbles may appear at first but they may be due to diaphragm movement.