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MAINTENANCE

Draining carburetor

The carburetor should be “purged” 
of alcohol at the end of every day of 
running. Alcohol is very corrosive and 
will cause a lot of problems if left in the 
carb. The fuel line should be unhooked 
at the carburetor and the bowl drain 
screw opened to drain any fuel in the 
system. Another option is to run the 
engine on gasoline until it stalls. This 
will flush any alcohol out of the system. 
The carburetor should also be drained 
at least at the end of the season when 
running gasoline.

Filters

Always use an inline fuel filter to 
prevent contamination inside the 

carburetor. Air filters should fit the 
carburetor properly and be kept clean. 

Bowl gasket

When reinstalling the float bowl you 
may find the gasket does not fit 
properly. If the gasket is too small it 
can be stretched to fit the groove. If 
it is wet it may swell slightly and can 
be set aside to dry and return to the 
proper size. If you are doing a lot of 
disassembly for tuning it may help to 
have extra gaskets. 

Cleaning/Inspection

Once a year the carburetor should 
be disassembled for cleaning and 
inspection. Look for wear on the jet 
needle and inlet tip. Inspect and/or 
replace o-rings and seals. If cleaning 

is necessary a toothpick will work 
for clearing any holes such as jets. 
Remove the Inlet Needle and use a 
Q-tip to clean the inside of the inlet
seat. Compressed air is also useful to
remove contamination. The pilot jet
has a very small metering orifice. If it
cannot be blown out it will likely need
to be replaced.
Always use a stop on the gas pedal. 
This reduces wear on the carburetor 
and the chance of a stuck throttle.

SPECIFICATIONS & EXPLODED VIEWS

Animal, 206, and 
M-series

Main Jet: 95
Pilot Jet: 32
Main Nozzle Diameter: 2.6
Jet Needle: BGB/2nd notch
Mixture Screw: 1 ½ turn
Float Height: 22.0mm (.860in)

Summary of Contents for Racing Animal Series

Page 1: ...Briggs Stratton Racing Carburetor Tips and Reference Guide Animal 206 and M series PZ 22...

Page 2: ...ngines could start with an open throttle resulting in a runaway vehicle Always install the correct return spring for the carburetor and use an additional return spring on the throttle pedal as needed...

Page 3: ...ed and is specified from the carburetor body to an edge or surface on the float The float should be resting on the inlet needle but not depressing the spring under the needle stem when this measuremen...

Page 4: ...air only adjustment so opening the screw turning counterclockwise will increase the air bleed and lean the mixture The mixture screw on the engine side of the PZ26 carburetor is a fuel adjustment Open...

Page 5: ...notch at the top of the needle would be considered the first position leanest Needle taper reference letters are stamped on the needle for identification Location of C clip on jet needle determines m...

Page 6: ...isfire in certain corners may require a float adjustment If the carburetor can be rotated on the manifold it may help to turn the carburetor a few degrees to compensate for a problem corner or for ova...

Page 7: ...retched to fit the groove If it is wet it may swell slightly and can be set aside to dry and return to the proper size If you are doing a lot of disassembly for tuning it may help to have extra gasket...

Page 8: ...ggsRacing BRIGGS STRATTON CORPORATION Post office box 702 Milwaukee WI 53201 USA 414 259 5333 2012 Briggs Stratton Corporation MS10429 REV Join the Conversation Post questions talk to other racers and...

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