Warranty; Briggs & Stratton - Briggs & Stratton 400000 Service Bulletin


If the gap between the thermostat arm and the retainer is .000-.050" (.00-1.27 mm), the setting is
correct. Actuate the choke lever to ensure freedom of movement with no binding. Correct as
necessary. Go to step 3.

If the gap between the thermostat arm and the retainer exceeds .050" (1.27 mm), adjust the
thermostat arm as follows:
a. Using a tang bender or similar tool, carefully bend the thermostat base (circle, Figure 2) until
b. Visually check that the gap between the thermostat arm and the choke rod retainer is
c. Actuate the choke lever to ensure freedom of movement with no binding. Correct as
3. Start and run the engine for 5 minutes, then shut down. After 1 minute, attempt to restart engine to verify that
the condition is corrected.

WARRANTY:

Normal warranty guidelines apply. This repair can typically be completed in 15 minutes or less. When filing a warranty
claim, select the following in the equipment section of the claim:

Key Part Category – Fuel Enrichment

Key Part – Thermostat

Condition Code – SP
the arm just touches the choke rod retainer (arrow).
.000-.050" (.00-1.27 mm).
necessary.
Figure 2
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