Briggs & Stratton FM3300E owner manual Blade Removal / Sharpening, Belt Replacement

17MAINTENANCE continued

17.4BLADE REMOVAL / SHARPENING

NOTE: When sharpening the blade it is a good idea to check the balance of the blade. A properly balanced blade will increase life of the bearings and other components.

Tools required: ratchet, 3/4” inch socket, torque wrench, ade- quate support, block to inhibit blade rotation.

1.Disconnect spark plug wire.

2.Support front of unit to allow access to the blades.

Note: Unit is heavy. Be sure support is adequate to prevent personal injury.

3. Block the blade to prevent it from rotating during removal

(see figure 17-4).

For Each Spindle:

4. Remove the blade bolt (Item 35), lock washer (33), and

large friction washer (103).

5. Remove the blade (18) and replace or sharpen the blade.

NOTE: Use only B.G.I. Part no. 520001(Standard blade) or

17.5BELT REPLACEMENT

When replacing one belt the other should be inspected for wear and replaced if worn. It is good practice to change both belts when either is worn beyond use. Use only original equipment belts for replacement. Billy Goat uses only premium quality, kevlar corded and coated belts in your unit.

Substitute belts do not meet the design and performance requirements for your unit , and will greatly reduce machine performance and belt life.

10526

19

85

171

23

22

B.G.I. Part no. 520002 ( Mulch blade).

37

24

171

6.Reinstall the blade using all fasteners in the exact order they were removed (see figure 17-4).

7.Torque blade screw to 60 ft-lbs.

NOTE: Before installing the fasteners inspect them for wear and replace as necessary.

8. Reconnect spark plug wire.

Figure 17-4

Figure 17-5

50

171

Figure 17-6

Blade Drive Belt Replacement

Tools required: ratchet, 3/4 inch socket, 10” extension bar for socket, two ½” wrenches and adequate support for machine.

1.Disconnect spark plug wire.

2.Remove the deck belt cover.

3.Support front of unit to allow access to underside of the machine near the engine.

Note: Unit is heavy. Be sure support is adequate to prevent personal injury.

4.Observe the orientation of the belt fingers (Item 71) under the engine.

5.Remove the 4 engine mount bolts (Item 48)

6.Remove the left and right belt fingers (These fingers are interchangeable).

7.Observe the orientation of the belt finger (Item 90) on idler (Item 91).

8.Loosen but do not remove idler/belt finger retaining nut (Item 144).

9.Observe belt routing and remove the belt from front spindle pulley (Item 46).

10.Remove the belt from the idler pulley and from the engine pulley.

11.Install new belt on engine pulley, idler and front spindle pulley following the original belt routing.

12.Position the idler belt finger centered on idler bracket and tighten the retaining nut (Item 144).

13.Reinstall the left and right belt guide fingers under the engine base using all fasteners in the exact order they were removed.

NOTE: Before installing the fasteners inspect them for wear and replace as necessary.

14.Torque the four engine bolts to 40 ft-lbs.

Note: With clutch levers engaged, be sure belt guides do not touch belts after installation.

Part No. 520141 Page 12 of 20 Form No. F061604A