Insufficient supply sufficiently carburetor fuel can be caused by faulty fuel pump, as well as from clogging the fuel system from the fuel tank. Ways to determine the cause of the termination of the normal supply of fuel: It is necessary to disconnect the hose from the discharge pipe, and using the hand lever, check arrives or not the fuel. In its absence, you must disconnect the hose from the pipe to check whether to create a negative pressure at the inlet suction port. If it is determined that the discharge is available, it is concluded that the damaged fuel line, and if not, then the cause of the malfunction is the fuel pump. Dismantling and repairing the pump: When disassembling the pump turns fixing bolt cover, remove the cover and filter. Then turn away the screws to the lid body, the latter separated. After this node is removed and the diaphragm spring. All parts are washed with petrol and purged. It then examines the serviceability of the springs pump and check valve is not jammed. In aperture determines their status, the presence of cracks and seals. After verifying everything works unusable parts are replaced by new ones. Necessarily replaced by new ones, laying the pump, while they applied a thin layer of grease. Statement of the pump on the engine: Sets the insulating gasket on the engine block, between them, put gasket thickness 0,27-0,33 mm. On the plane in direct contact with the pump, put gasket thickness 0,7-0,8 mm. Special device measured the distance that stands pusher. This involves a slow cranking the crankshaft. If the excess length of the pusher is 0,8-1,3 mm pump is attached to the engine. If the measurements of the magnitude pushrod protrusion is less than 0,8 mm 0,7-0,8 mm strip of changes to the lining of 0,27-0,8 mm. At a ledge pusher more than 1,3 mm 0,7-0,8 mm strip of changing the gasket the size of 1,1-1,3 mm. In this case complied with the rule that required between the crankcase and put insulation spacer spacer size 0,27-0,33 mm.
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