THE FUEL SYSTEM AND GOVERNOR
30
Choke linkage
The rod connecting the choke knob to the choke plate
on the carburetor can be bent slightly to facilitate
adjustment. To access it:
1. Remove the choke knob and the engine shroud
by following the steps described in Chapter 3:
Air Intake Systems.
2. Rotate the choke knob shaft to verify full choke
movement.
See Figure 4.11.
3. If the choke plate does not open fully or close
fully, adjust the choke linkage.
NOTE: When adjusting the choke linkage, make
small bends and recheck the movement of the
choke plate. Repeat this step until full movement
is achieved.
4. Reassemble by following step 1 in reverse order.
5. Test run the engine before returning to service.
Figure 4.11
Choke knob shaft
Choke
plate
Choke linkage
Primers
MTD engines use a dry bulb primer. This means that
there is no fuel in the primer bulb. The primer works by
pushing air into the float chamber of the carburetor
when the primer bulb is depressed. This will force fuel
to be sprayed out of the main nozzle into the throat of
the carburetor.
To test the primer:
1. Remove the engine shroud by following the
steps described in Chapter 3: Air Intake Sys
-
tems.
2. Reconnect the primer hose to the carburetor.
See Figure 4.12.
3. Press the primer bulb while looking down the
carburetor throat. If there is fuel squirting into the
carburetor throat the primer is working properly.
If not, replace the primer and hose.
NOTE: The primer and primer hose come as an
assembly so there is no need to determine
which part is bad.
Figure 4.12
Primer hose
Carburetor throat
www.mymowerparts.com
For Discount White Outdoor Parts Call 606-678-9623 or 606-561-4983
To Next Page
Loading...
Need help?
General
