If you can locate the model number on the engine you can look up what manual applies to it and either purchase it from Briggs or maybe find one floating on the net someplace by Googling it.
Determining the Correct Repair Manual | Frequently Asked Questions | Customer Support | Briggs & Stratton
Were to look for the numbers:
Model, Type, and Code number locations | Frequently Asked Questions | Customer Support | Briggs & Stratton
Determining the Correct Repair Manual | Frequently Asked Questions | Customer Support | Briggs & Stratton
Were to look for the numbers:
Model, Type, and Code number locations | Frequently Asked Questions | Customer Support | Briggs & Stratton