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78/83/90 Series Horizontal Shaft Engines
36
NOTE: An insulator block separates the carburetor
from the cylinder head. There is a gasket on
each side of the insulator.
See Figure 3.16.
NOTE: The gaskets are different, and there is an
orientation to the insulator.
• The bowl vent channel in the insulator faces the
carburetor, with the exit toward the bottom.
• There is a small hole in the insulator to carbure-
tor gasket. The hole should be aligned to allow
passage of air through the bowl vent channel to
the throttle side bowl vent in the carburetor
body.
9. Install the insulator and carburetor by following the
above steps in reverse order.
NOTE: Tighten the carburetor mounting nuts to a
torque of 80 - 106 in-lbs (9-12 Nm).
10. Test run the engine before returning to service.
Figure 3.16
Insulator block
Gaskets
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com