Briggs & Stratton 271172, 270962 manual Auxiliary Pto, Inspection, Remove Auxiliary PTO Drive Shaft

AUXILIARY PTO

Some models of the vertical shaft 110000 and 120000 engines were equipped with an auxiliary PTO shaft. The auxiliary PTO shaft (E, Figure

23)extends through the side of the sump, perpendicular to the crankshaft. Rotation can be either clockwise or counterclockwise, as viewed from the end of the shaft. The oil slinger (A), camshaft (C), and worm gear (D) are pre- assembled and must be serviced as a set.

NOTE: The clockwise system requires a thrust washer (B) installed at the upper camshaft journal. The counterclockwise system requires the thrust washer be installed at the lower journal, under the worm gear.

Figure 23

Figure 24

3.With a 3/16” pin punch, drive the roll pin in the bevel gear (B) through the allen screw hole.

4.Remove screw and PTO shaft stop then slide out PTO shaft.

Inspection

Inspect all parts for evidence of wear or damage. If replacement is required, ensure the correct rotation set (clockwise or counterclockwise) is chosen from the Illustrated Parts List.

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Remove Auxiliary PTO Drive Shaft

1.Remove all rust and burrs from crankshaft, then remove sump.

2.To remove auxiliary PTO shaft from sump, remove Allen screw (A, Figure 24) from bottom of sump. The slinger, camshaft, and worm gear assembly will remain in the cylinder.

Assemble Auxiliary PTO Drive Shaft

1.Place drive shaft in sump and push shaft through bevel gear.

2.Line up holes in bevel gear and drive shaft. Install new roll pin until it is centered in gear.

3.Place shaft stop in groove of drive shaft and install screw. Torque to values listed in Section 12 - Engine Specifications.

4.Install allen screw in bottom of sump and torque to values listed in Section 12 - Engine Specifications.

5.Rotate assembly by hand to check for binding.

6.Using new gasket, install sump to cylinder according to instructions provided earlier in this section.

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