Section 5: Maintenance

WARNING

Before inspecting, cleaning or servicing the machine, shut off engine, wait for moving parts to stop, disconnect spark plug wire and move wire away from spark plug. Remove ignition key (electric start models).

Failure to follow these instructions can result in serious personal injury or property damage.

ENGINE STORAGE

If engine will be unused for 30 days or more, prepare it for storage by following the recommended procedures found in the Engine Owner’s Manual.

MOWER SERVICE

The following maintenance/repair proce- dures can be performed by either the owner or an authorized service dealer. See an authorized service dealer for complete mower service.

TIPPING MOWER FOR SERVICE

The belt cover must be removed to per- form several maintenance procedures.

To Remove Belt Cover:

1.Stop engine, wait for all parts to stop moving, and disconnect spark plug wire.

2.Remove four screws (R, Figure 5-5) and remove cover.

To Reinstall Belt Cover:

1.Position belt cover in place.

2.Secure with the four screws removed earlier.

5. Loosen four mounting bolts (L) se-

curing spindle housing (beneath mower

deck) to mower deck.

6. Slide spindle housing (with pulley at-

tached) toward center.

7. Replace belt (N) with new belt.

IMPORTANT: SET BLADES PERPEN-

DICULAR (90°) TO EACH OTHER.

8. Rotate arm (K) to move spindle

housing and apply tension to belt. Belt

cogs and pulley grooves must mesh to-

gether. When applying moderate finger

tension (8-12 lbs.), belt should deflect

approximately 1/2” (12.7 mm) at (P),

WARNING

Before servicing underside of mower, stop engine, wait for all parts to stop moving, and disconnect spark plug wire. Remove ignition key from keyswitch on electric start models. Failure to follow this instruction could result in personal injury or property damage.

When servicing the underside of the mower for any reason, the mower should only be tipped backward on its rear wheels (and securely propped up to prevent it from falling). Tipping the mower forward or to either side could result in damage to engine.

TIP: Before tipping mower, install a small plastic sandwich style bag under the gas cap and tighten securely. This will virtually eliminate any fuel seepage from the cap. Be sure to remove the plastic bag before re-using mower.

BELT COVER REMOVAL

WARNING

Do not operate unit without belt cover installed. Failure to follow this instruc- tion could result in personal injury or property damage.

R

Figure 5-5: Belt cover removal.

BLADE SPINDLE BELT

REPLACEMENT

Follow this procedure to remove and re- place the blade spindle drive belt (re- move blade drive belt first; see “Blade Drive Belt Replacement” in this Section).

1.Stop engine, wait for all parts to

stop moving and disconnect spark plug wire.

2. Remove belt cover (see “Belt Cover Removal”).

3.Align sight holes (O, Figure 5-6) in pulley with spindle housing-to-mower deck mounting bolts (L).

4.Loosen screw (J) and rotate arm (K) to the rear.

midpoint of deck.

9. Tighten bolts (L) to 15 ft.-lbs. (20.3

Nm). Tighten screw (J).

10. Blades must not contact deck.

Check and readjust as needed.

11. Reinstall blade drive belt and belt

cover (removed earlier).

FRONT

N PO

J

M

K L

BLADES

MUST BE PERPENDICULAR

TO EACH OTHER

Figure 5-6: Blade Spindle Belt.

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Troy-Bilt F753B manual Mower Service, Engine Storage, Tipping Mower for Service, Belt Cover Removal