tip of the main nozzle is distorted or damaged, or if the threads are stripped.
Be sure all holes in the side of the main nozzle are clean and undamaged.
vacuum passage jet - Discard
and replace if any damage or distortion is noted. Carefully inspect the
orifice at the tip of the jet for damage and foreign matter.
linkage - Discard
the choke lever and swivel assembly if there are stripped threads in the
swivel or if it is no longer securely riveted to the lever.
- Discard and
replace if distorted or broken.
lockwashers, and nuts - Discard
and replace if stripped threads, bending, or other damage is noted.
the new pump rod felt seal and retainer (flat steel washer) by sliding the
seal in place in the lower body casting and then installing the washer.
If necessary, a short piece of 3/8 inch wood dowl can be used to drive the
washer into position so that it rests slightly beneath the surface of the
casting. Lightly tap the stake marks in the casting with a center punch
to secure the washer.
the new pump discharge needle valve, point down, in the lower body casting.
Place a 1/8 inch diameter brass rod on the needle and tap it gently three
or times with a small fiber mallet to insure a positive seal when the needle
rests on the seat. Gentle taps with the mallet must be used to avoid damage
to the needle. Check to be sure the needle moves freely up and down in its
chamber after performing this operation. Place the new brass concave disc
retainer in position with the bulge up. Set the brass rod on the center
of the bulge and tap sharply until the retainer is flattened out and securely
locked in position.
the new power valve gasket on the power valve and install the valve, being
careful to avoid damaging the valve. Tighten the valve securely to insure
proper sealing by the power valve gasket.
the new pump inlet check valve (1/8 inch steel ball) into the hole nearest
the side at the bottom of the pump well in the lower body casting. Install
the pump inlet check valve retainer with the bent-in prong extending over
the ball. Be sure the re