Troy-Bilt 12090 Owner's Manual page 36

Section5: Maintenance
_ efore inspecting,cleaning or servicingthe machine, shut off engine, wait for all moving parts to come I
to a complete stop, disconnectspark plug wire and move wire away from spark plug. Remove ignition
key, if so equipped.
Fa ure to fo ow these nstructons can resu t n ser ous persona njury or propertydamage.
3. Insert the belt adjustment tool through
the hole in the side of the adjustment
block, spacing the ends of the tool equally
on both sides (Figure 5-14). Rotate the
tool so the slotted end faces down.
Figure 5-14: With WheelslTineslPTO
Drive Lever in NEUTRAL, insert tool
through hole in adjustment block.
4. Placethe Wheels/Tines/PTODrive
Lever in FORWARDposition. The arms of
the clutch control yoke will be resting on
the belt adjustment tool and the clutch
roller should be engaged slightly beneath
the adjustment block (Figure 5-15).
Figure 5-15: With Drive Lever in
FORWARD position, clutch roller
should be engaged slightly beneath
the adjustment block.
5. Use one hand to hold the drive lever in
FORWARD while using a 9/16" wrench to
loosen (don't remove) the bolt at the back
of the belt adjustment block (Figure 5-16).
The adjustment block should be free to
move either up or down.
Figure 5.16: Hold Drive Lever while
loosening bolt. Push lever down to
tighten belt; pull up to loosen belt.
6. Push the drive lever down if the belt
needstightening. Pull the lever up if the
belt needsto be loosened. Hold the drive
lever in place and tighten the bolt in the
adjustment block firmly.
7. Let go of the drive lever and remove
the belt adjustment tool from the hole in
the adjustment block.
8. Check the tensionon the belt by
following the previous instructions "How
to Measure Belt Tension."
NOTE: If the adjustment block is all the
way down and the measurement between
the clutch roller and the bracket is less
than 1/4",then a new drive belt is needed.
Replacing the Drive Belt
Removingthe Belt
1. Move Wheels/Tines/PTODrive Leverto
NEUTRALposition.
2. While kneeling on the right side of the
tiller, create slack in the belt by reaching
over to the left side of the pulleys and
pushing in on the center of the belt with
your finger.
3. Use your right hand to move the belt
down and away from the lower pulley, in
the direction of the engine (Figure5-17).
4. Push the belt upward to create slack in
the belt (Figure 5-18).
Figure 5-17: First move belt off the
lower pulley.
Figure 5-18: Push belt upward to
create slack.
5. Lift the top half of the belt up and over
the upper pulley and the rubber reverse
disc, moving it in front of the reverse disc
(refer to Figure 5-19)=
6. Push the Wheels/Tines/PTODrive
Leverdown into the FORWARDposition.
This increasesthe distance between the
upper and lower pulleys= Next, lift and
pull the entire belt out between the pulleys
(Figure 5-20).
Replacingthe DriveBelt
1. PlaceWheels/Tines/PTODrive Lever in
FORWARDposition.
2. Squeezethe belt in the middle and
insert one end in between the pulleys
(Figure 5-20).
36