Troy-Bilt 52067 - 5HP - Manual (Page 13)

Section 5: Maintenance 11
Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to
a stop, disconnect spark plug wire and move wire away from spark plug. Remove ignition key on electric
start models.
Failure to follow these instructions can result in serious personal injury or property damage.
WARNING
REMOVING AND REPLACING
TRIMMER HEAD
1. Stop the engine and wait for all mov-
ing parts to stop. Disconnect spark plug
wire and move it away from the spark
plug. Remove the ignition key on electric
start models.
2. Two bolts (A, Figure 5-3) secure the
trimmer head (B) to the spindle head (C).
Loosen both bolts (not the nuts) just
enough to open up the trimmer head and
allow it to slide down the spindle head
and past the two stops. Do not attempt
to remove the bolts completely – they are
permanently attached.
NOTE: It may be necessary to first re-
move the wear cup (D, Figure 5-3) when
removing the trimmer head. See Step 4
for the procedure.
3. Install the new trimmer head on the
spindle head. Tighten the hardware se-
curely (to 75 in/lbs.) and evenly.
4. If the wear cup (D, Figure 5-3) is also
worn, replace it. Use a 1/2" socket
wrench to remove the screw (E, Figure 5-
3) and washer (F). Install the new wear
cup and reinstall the washer and screw.
Tighten the screw securely.
INSPECTING/REPLACING
DRIVE BELT
The drive belt should not require inspec-
tion for many hours of operation. If re-
placement becomes necessary, follow the
instructions given here.
Belt Inspection
1. Stop the engine and let all moving
parts stop. Disconnect spark plug wire
and move it away from spark plug. Allow
engine to cool. Remove the key on elec-
tric start models.
2. For convenience, we recommend that
you place the unit on a raised platform to
make access to the underside of the deck
as easy as possible.
3. Examine the belt. Feed it around the
rear (engine) pulley so the entire belt can
be examined. If cracks or other damage
are noted, a new belt is needed.
Belt Removal
1. Stop the engine and wait for engine to
cool. Disconnect the spark plug wire and
move it away from the spark plug.
Remove the ignition key on electric start
models.
2. Remove gasoline from fuel tank.
3. Carefully tip unit on its left side and
secure it in place.
4. Remove the plastic plug (A, Figure 5-
4) from the top of the mower deck.
5. Using a 3/4" socket wrench, remove
nut (B, Figure 5-4), belleville washer (C)
and flat washer (D) from spindle shaft (E).
Figure 5-3
Figure 5-2: Belt tension adjustment.
B
A
A
B
E
C
D
F
Figure 5-4
A
B
C
D
E
GASOLINE IS HIGHLY FLAMMABLE AND
ITS VAPORS ARE EXPLOSIVE.
• Drain fuel into approved container
outdoors, away from open flame.
• Be sure engine and muffler are cool
before draining gasoline.
• Do not smoke.
Failure to comply can result in serious
personal injury and property damage.
DANGER