Instruction manual

Engine Model:

Briggs & Stratton

Classic,

450 and 500 Series

Page

14 of 32 B&S Classic, 450 and 500 Series Selfhelp Guide 2011, Issue 1.0

C: Adjusting the Operator Presence Control cable (450 and 500 Series

engines only):

1. With time the OPC cable may stretch and not

fully engage switch which allows the electrical

feed to the spark plug. This is the cable which

runs down from the top bar on the main handle.

2. Follow the OPC cable down to the back of the

engine where the lever moves when the OPC is

depressed. Come BACKWARDS along the

bare metal cable some 8cms to where the

metal bracket (X) grips the black plastic cable

covering (directly below the fuel filler).

3. Release the plastic cable cover by compressing

the 2 lugs inwards on the end of the plastic

cable cover that are splayed out and hold it in

place. Feed the black plastic cable cover

BACKWARDS through the bracket to release

the cable.

4. Disconnect the Z-end of the OPC cable from the

lever which moved when you held the OPC bar

back to the handle in Step 2 above.

5. Thread a thin washer onto the cable, over the Z-

end of the OPC cable, and then over the 2 lugs

which fasten the cable into the bracket.

6. Re-connect the Z-end of the cable into the lever

and then replace the cable in the bracket. This

will now compensate for stretch in the cable.

You should now be able to start the mower in

the normal way.

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