Briggs & Stratton 276535, 271172, 270962 Electric Starters, Replace Ring Gear, System 3, System

2.Wipe off any excess oil from the top of the ratchet, then place the ratchet on the housing.

3.Install the retainer cover and seal over the ratchet and press into housing until fully closed. Install retaining screws (if used).

4.Place one drop of clean engine oil on top of crankshaft pilot, then install clutch on crankshaft. Using the Starter Clutch Wrench and Flywheel Strap Wrench, tighten the clutch to the value listed in Section 12 - Engine Specifications.

ELECTRIC STARTERS

7

Replace Ring Gear

All Briggs & Stratton engines use an aluminum, plastic, or steel ring gear on the flywheel. Replace the ring gear if it shows wear or damage. Some steel ring gears are pressed or heat shrunk to the flywheel. These ring gears are not replaceable.

To replace a worn or damaged flywheel ring gear, proceed as follows:

1.Mark center of rivets holding ring gear (A, Figure 18) to flywheel, with a center punch.

2.Drill out rivets using a 3/16” (4.7 mm) drill bit.

3.Remove the ring gear and clean holes after drilling.

4.Attach new gear to flywheel using four screws (B) and lock nuts (C) provided with the gear.

System 3®, System 4®

Check Starter Drive and Clutch

When starter switch is activated, pinion gear

(A, Figure 19) should engage the ring gear and crank engine. The clutch should not slip during engine cranking and pinion gear shouldn’t bind on the helix (B).

NOTE: Do not oil the pinion gear or helix.

1.Remove the starter from the engine.

2.Using a mild solvent, clean the drive and clutch assembly, then dry with compressed air.

3.Inspect for damaged parts and replace if necessary.

4.Install starter on engine and test for proper operation.

5.Replace the entire starter drive assembly if the clutch slips or if the pinion gear binds on the helix.

	Figure 20
Figure 19

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