AIR
BREATHER
HOSE
CRANKCASE
BREATHER
TUBE
CARBURETOR
I
.
AIR
CLEANER
CHOKE COVER
FS-1609
FIGURE
6-12.
AIR
FILTER
ASSEMBLY
4.
Remove the two intake manifold gaskets and plug
the intake ports with a rag to prevent loose parts
from accidentally entering ports.
5.
Remove the two capscrews that secure the car-
buretor and choke pull-off assembly to the intake
manifold. Disengage the choke pull-off linkage
from the carburetor and carefully separate the
carburetor from the intake manifold.
adjustment screws. Significant variation from the
correct settings may result in serious engine trouble.
An overly rich mixture not only wastes fuel, but can
increase engine wear by washing the lubricant from
the cylinder walls and diluting the crankcase oil. An
overly lean mixture results in a
loss
of power, flat
spots in acceleration and a greater tendency to burn
valves and spark plugs.
Assembly: Reverse order
of
disassembly. Use new
gaskets befween intake manifold and engine
and
between intake manifold and carburetor.
Do
not use
any sealer
on
gaskets. Tighten intake manifold cap-
screws
to
specified torque.
Mixture screw adjustment should be checked with
every engine tune-up and whenever a carburetion
problem is suspected. Before adjusting, be sure the
ignition system is working properlyand the governor
is correctly set. If the carburetor is totally out of
adiustment, use the mixture settinas aiven in Table
6-2
as preliminary adjustments. fur: the mixture
screws in until lightly seated, then turn out the speci-
fied number of turns.
Carburetor Mixture Screw Adjustments
The most common cause
of
poor carburetion is un-
satisfactory adjustment
of
the idle or main mixture
6-1
3
Redistribution or publication of this document
by any means, is strictly prohibited.
Redistribution or publication of this document
by any means, is strictly prohibited.
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