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Service Manual
Moby XL, SE-803
Engine Repair Cont.
Fuel System cont.
Using a straight edge such as a metal ruler, check the carburetor
insulator for any possible warping. If the insulator shows sign of
warping replace it with a new one.
Using a carburetor pressure tester, test the pressure-holding ability
of the carburetor. Attach the tester line to the intake fitting of the
carburetor (not to be confused with the fitting that accommodates
the purge bulb return line). The carburetor should hold 7 PSI.
Readings less than this indicate a problem within the carburetor.
The pump body of the carburetor is held together with four screws.
With these screws removed, it will be possible to inspect all of the
pump components of the carburetor.
Inspect all gaskets and diaphragms to ensure that they have not lost
their pliability, and show no signs of cracking or drying. If any of
these components are in question, replace all of them with a
carburetor repair kit (650-25124-90). Pay careful attention to their
position in the carburetor during re-assembly.
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