Briggs & Stratton 9D900-9D999 Series Service Engine Sales Manual

Introduction

In most cases, the Original Type numbers shown may be replaced by a Service Type Number without making any changes. Necessary changes of engine parts such as crankshafts, reduction parts, blower housings, etc., are noted. Other differences, such as mufflers, elbows, deflectors, etc., are not listed but are very important for safety and engine performance. Be sure the exhaust system on the replacement engine duplicates the system originally selected by the equipment manufacturer. Parts that are suitable for additional use should be transferred. Before making any conversion, check the data shown in the column labeled "REMOVE, ADD and NOTE." See if the changes, which are shown, are actually necessary on the application in question. Often a standard service engine will be a WORKABLE replacement without converting to such things as a special fuel tank or starter position.

If the crankshaft number does not appear in the "Original Engine" column, consult the Illustrated Parts List for the correct service replacement crankshaft number.

Engine Replacement Notes

• NOTE 7: Drill and retap PTO end of Crankshaft 7/16"-20 (1-1/8" deep). Use 25/64" tap drill.
• NOTE 51: Replacement engine listed is not available in the State of California. Repair with individual parts.
• NOTE 73: Transfer Flywheel Assembly to the replacement engine.
• NOTE 88: Transfer Muffler and/or Spark Arrester Assembly from the original engine if suitable for additional service or add new parts as required.
• NOTE 97: Transfer the Blower Housing, Rewind Assembly and related parts from the original engine to replacement engine.

Short Block Notes

The SHORT BLOCK part number shown, is the assembly which can be used to rebuild the Original Type Number. If a letter appears after the short block number, it indicates the short block must be modified. The change denoted by each letter is as follows:

• NOTE R: Cut off 1-7/16" on Flywheel end of Crankshaft.
• NOTE FF: Change Drive Shaft in Short Block. Remove 230948. Add 230831.
• NOTE PP: Change Drive Shaft in Short Block. Remove 230831. Add 231213.

Engine Replacement Table (9D900 to 9D999)