Specifications
40
6. Connect both carburetors by attaching the link and
link connector bushing clip to the # 1 carburetor.
7. Hold the throttle plate on the #2 carburetor in the
true idle position. (Screw against the tang).
NOTE
Do not set the gap using the idle R.P.M. adjustment
screw. Use a .010” (.254 mm) feeler gauge to set the
air gap between the idle R.P.M. adjustment screw and
the throttle plate tang on the #1 carburetor (diag. 77).
The throttle cross link will need to be bent inward (toward
the engine) to increase the air gap or pulled outward to
decrease (diag. 78).
Choke Synchronization
1. Engage the choke control cable of the equipment to
the full choke position.
2. Remove the control assembly cover, air cleaner
cover, air cleaner and air cleaner baffle (diag. 79).
3. Visually inspect that the choke shutter plate on the
# 2 carburetor is completely closed. If the plate is
not completely closing, choke cable adjustment is
necessary.
4. Apply and hold light pressure closing the choke
lever on the #2 carburetor. Attempt to rotate or
move the choke plate on the #1 carburetor (diag.
80). If movement can be found or the choke shutter
is not completely closing, the choke cross-link will
need to be adjusted. To adjust, bend the cross-link
inward towards the cylinder block until both choke
shutters completely close at the same time.
Re-assemble the components, ensure the cable clamps
are tight. Start the engine and allow it to warm up (3-5
minutes). Set the governed idle and top no-load R.P.M.
The correct R.P.M. settings can be located on microfiche
card #30 or the computer parts look-up system. The
use of a vibra-tach Tecumseh part #670156 or a
digital engine tachometer part #670341 will aid in this
procedure.
77
CROSS LINK
78
#2 CYLINDER
#1 CYLINDER
79
80
www.mymowerparts.com
For Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983










