Troy-Bilt 753B - Manual (Page 20)

18
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
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
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.
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.
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),
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).
Section 5: Maintenance
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.
WARNING
Do not operate unit without belt cover
installed. Failure to follow this instruc-
tion could result in personal injury or
property damage.
WARNING
Figure 5-5: Belt cover removal.
R
BLADES
MUST BE PERPENDICULAR
TO EACH OTHER
FRONT
Figure 5-6: Blade Spindle Belt.
N P
J
O
M
L K
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.
WARNING