Honda HT3810 Owner's Manual page 29

6. Seat safety switch operation check.
1. Move the P.T.0 lever to ON (Engaged).
Rise off the seat - the engine should stop immediately.
2. Return the P-T.0 lever to OFF (Disengaged) and restart the engine.
Release the parking brake and place the shift lever in the 1st speed
range. While driving slowly, rise off the seat - the engine should stop
immediately.
mm
To prevent loss of control, perform this check on level ground,
never on a slope.
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