Choke Shaft And Plate; Fuel Bowl Assembly - Tecumseh V-twin Technician's Handbook

CHOKE SHAFT AND PLATE

Install the choke return spring on the choke shaft with
the squared end up and hooked into the notch on the
arm. Work the dust shield up around the spring and insert
the choke shaft into the carburetor body. Rotate the shaft
counterclockwise until the tang on the spring rests against
the left side center boss on the carburetor body. (Illust.
3-19)
Always use new shutter screws part 650506 when
reinstalling a shutter plate. Install the screws so they
are slightly loose. Apply light downward pressure on the
shaft and rotate it clockwise to seat the shutter in the
bore, then tighten the shutter screws. Check for binding
by rotating the shaft. If necessary, adjust the shutter by
loosening and repositioning, then retighten the screws.
3-8

FUEL BOWL ASSEMBLY

Inlet Needle & Seat
When servicing the fuel bowl assembly, a new needle
and seat should always be installed to reduce the
possibility of leakage.
Make sure the seat cavity is clean. Moisten the seat
with oil and insert the seat with the grooved side down
and away from the inlet needle. Press the seat into the
cavity using a 5/32" (3.969 mm) an Allen wrench or a
flat punch, making sure it is firmly seated. (Illust. 3-20) If
the new needle and seat contains a retainer install it on
top and in contact with the seat.
3-19
Main Jet Assembly
Install a new O-ring in the main jet cavity (verify the
original o-ring has been removed). Place the spring over
the shoulder of the main jet and insert into the cavity
with the main jet towards the o-ring. Next install a new
fiber gasket on the bowl drain screw or fuel shut-off
solenoid and tighten to 25-30 In. lbs. (2.83 - 3.4 Nm).
(Illust. 3-21)
SOLENOID
GASKET
METERING
JET
O-RING
SPRING
3-20
3-21