User's Manual

GB - 20
DRIVE BELT (Self propelled units)
To remove drive belt:
1. Position right hand rear wheel Height
Adjustment lever in first notch and left
hand rear wheel Height Adjustment
lever in third notch. This provides
clearance between friction wheel and
drive disk.
2. Remove belt from idler, drive disk and
engine pulley.
3. Pull belt through opening under mower
pan and over blade.
4. Check idler for free rotation of pulley
and movement of pivot.
5. Reinstall drive belt in reverse order. Be
sure that belt seats in pulley grooves
with idler positioned on back (flat) side
of belt.
6. Reposition rear wheels so all four
wheels are at the same height.
WHEEL DRIVE CONTROL (Self
propelled units)
See Figure17.
When the Wheel Drive Control is squeezed
toward the handlebar the extension spring,
located at the bottom end of the traction cable,
must start to extend when the control is
between 1-1/2" and 2" (3.8 and 5 cm) away
from the handlebar. To check:
1. Squeeze the Wheel Drive Control
toward the handlebar until the spring
starts to open.
2. Measure the distance between the
Wheel Drive Control and handlebar at
the handlebar indentation.
3. To obtain the proper adjustment, turn
the cable nuts. Turn clockwise if the
measurement is more than 2" (5cm);
counterclockwise if the measurement is
less than 1-1/2" (3.8cm). Tighten the
nuts against the bracket to lock in
position. If there is not enough thread
length for adjustment, the opposite end
of the cable can be adjusted.
SPEED CONTROL BELL CRANK
(Self propelled units)
The speed control bell crank holds the speed
selector rod in position after a speed has been
set. The spring washers may become loose
with normal wear. If the speed selector rod
does not stay firmly in position, adjust the
speed control bell crank. See Figure 18.
To adjust:
1. Remove cover, fully compress the
helical spring lock washers with lock
nut and then back lock nut off, one
quarter turn.
2. If the speed selector rod is still too
loose, tighten lock nut by small
increments until it holds its position.
Tightening the lock nut too much will
not allow the speed selector rod to
move at all.
3. Align notch in left hand side of cover
with bolt and secure with knob.
1. Traction Cable
2. Handlebar Indentation
3. Cable Nuts
4. Wheel Drive Control
1-1/2" to 2"
2
4
3
1
OM0290
(3.8 to 5cm)
Figure 17
1. Lock Nut
2. Helical Spring
Lock washers
3. Speed
Control Bell
Crank
4. Speed
Selector Rod
5. Hair Pin
6. Swivel
1
2
3
4
5
6
OM0300
Figure 18