Disassembly And Rebuilding The Carburetor - MTD P90 series Shop Manual

Disassembly and rebuilding the carburetor

1. Remove the carburetor by following the procedures described in Chapter 3: Air Intake System.
NOTE: An insulator separates the carburetor from the cylinder head.
• A bowl vent port is in a recessed passage on the end of the carburetor that faces the insulator.
• A second passage in the insulator supplements the passage on the carburetor.
• Gaskets separate the insulator from the cylinder head and the carburetor from the insulator.
• A port in the carburetor to insulator gasket ties the bowl vent passages together.
Bowl vent port
Afterfire solenoid
seat
Figure 4.6
Figure 4.7
2. Check the vent passages. See Figure 4.6.
3. Check the gaskets and the insulator block.
4. Remove the afterfire solenoid seat using a 14mm
wrench. See Figure 4.7.
NOTE: From this point an assessment can be made about
the viability of rebuilding the carburetor.
• If extensive corrosion is evident, replace the carbu-
Bowl vent
retor.
channel
• If varnish build-up is too extensive to clean,
replace the carburetor.
5. Remove the pin that the float hinges on to remove
the float.
Float pin
F S G
UEL YSTEM AND OVERNOR
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