Troy-Bilt 12069-7HP - Manual (Page 32)

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To Change Belt Speeds
Your tiller has two belt-driven
speed ranges - HIGH RANGE and
LOW RANGE - you pick one or
the other by deciding which set of
pulley grooves you move the for­
ward belt into. By moving the belt
from one speed range into the
other, in combination with the
FAST and SLOW wheel speeds of­
fered by the Wheel Speed Lever,
you obtain a choice of four differ­
ent forward wheel speeds and two
different tine speeds.
Changing the belt from LOW
range into HIGH range (or back
again) is simply a matter of mov­
ing the belt from one set of
grooves on the engine and trans­
mission pulleys to a second set of
grooves. This change is done
quickly without tools. See Photos
4-12 through 4-16 for reference.
By using the two belt speed
ranges with the two Wheel Speed
Lever positions (FAST and SLOW),
here are the wheel speeds / tine
speeds available to you:
At 3000 RPM engine speed, the wheel
and tine speeds you can choose from
are;
Belt
Wheel
Speed
Lever
Wheel Tine
Position Position Speed Speed
Low Range Slow .5IV1PH 146RPM
Low Range Fast 1.2MPH 146 RPM
High Range Slow .7MPH 200 RPM
High Range Fast 1.72MPH 200 RPM
When the tiller is moving in
REVERSE, the wheels and tines
are powered by the rubber reverse
disc and not by the belt. So you
have only two reverse speeds as
determined by the SLOW and
FAST positions of the Wheel
Speed Lever.
IMPORTANT: Proper belt ten­
sion is important to good perfor­
mance. Check tension after first
2 hours of new operation; then
every 10 operating hours.
-
S.i
Î
High Range
“•si
Low Range
Photo 4-12: Belt range positions.
To Change From LOW Range
to HIGH Range
1. To avoid personal injury, shut
off engine, let all moving parts
come to a complete stop, then dis­
connect the spark plug wire and
move it away from the spark plug
before making any adjustments.
2. Place Wheels/Tines/PTO Drive
Lever in NEUTRAL.
3. Kneel on left side of tiller. To
create belt slack, reach over to
right side of the pulleys and push
in at the center of the belt with a
finger. At the same time, use your
left hand to work the belt part-way
into the forward groove of the
transmission (lower) pulley. See
Photo 4-13. Now go to the other
side of the tiller- finish seating the
belt in the forward groove.
4. On the left side of the tiller,
work the belt as much as possible
into the forward groove in the en­
gine (top) pulley. See Photo 4-14.
Finish seating it from the right side
of the tiller.
Note: If extra belt slack is needed
to move the belt, just raise the
Wheels/Tines/PTO Drive Lever up
into REVERSE. This lowers the
engine pulley, creating the slack.
5. Check both sides of the pulleys
to see the belt is seated in HIGH
range grooves of each pulley.
^ WARNING
To help avoid seri­
ous personal in­
jury, stop the en­
gine, remove the
ignition key, dis­
connect spark plug
wire and move the
wire away from
the spark plug,
and let engine and
muffler cool down
before
changing
belt speeds.
r
<n
Photo 4-13: Move belt on transmis­
sion pulley into the forward groove.
Photo 4-14: Move belt on the engine
pulley into the forward groove.
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