G424 Service Manual Gasoline Fuel System69
6EN1888
6EN0855
6EN0852
4. Inspection of Mixture Adjusting Screw (MAS)
Check tapered end of mixture adjusting screw (MAS) for
damage from over tightening, etc.
5. Throttle Body Check
Make sure that the throttle shaft moves smoothly. If any sticky
movement is found, thoroughly clean the shaft, and then coat
it with a small amount of engine oil. Do not disassemble the
shaft unnecessarily.
Service Points of Reassembly
For reassembly, reverse the order of disassembly while
paying much attention to the following:
(1) Clean every parts with clear cleaning oil before
reassembly. Check all passages for clogging.
(2) Replace all the removed packings and gaskets.
(3) Make sure the throttle and choke linkage operates
smoothly. If any sticky movement is found, clean or
replace the linkage, and make sure that the carburetor
operates without any problem.
A Installation of main jets
(1) When replacing a main jet, the oil jet and the new jet must
be of the same size, because the jet is selected after
exact flow measurement by factory. (A size symbol is
stamped on each jet.)
Check for damage
Main jet
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