BOB MA0501, Owner'S Manual

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tracking instructions
(800) 893-2447 www.bobgear.com email- info@bobgear.com
Phone: (805) 541-2554
Fax: (805) 543-8464, BOB Trailers, Inc.
3641 Sacramento Dr. #3 San Luis Obispo, California 93401
We have added an enhanced feature to our jogging strollers that
allows the customer to fine tune the tracking of their stroller. This
document is designed to supplement to the Owner’s Manual. Proceed
with initial setup and use of your stroller and only refer to this
document if you believe there is a tracking problem with your
stroller.
All fixed three wheeled vehicles can be easily influenced to deviate
from a straight path. In some cases strollers can have or develop a
tendency to pull to the right/left due to many different factors including
tire pressure, wheel installation, road conditions and manufacturing
tolerances. If you find your BOB stroller to significantly track or pull
to the left or right during use on flat terrain, follow the sequence of
instructions below.
Tracking Adjustment Instructions:
The fine-tuning of desired tracking should be performed in the following
sequence.
1) Confirm the rear wheels are installed correctly. Refer to step 4 of
the Owner’s Manual for installation instructions.
2) Confirm the front wheel is installed correctly. Refer to step 6 of the
Owner’s Manual for correct installation instructions. When tightening
the quick release make sure the front wheel is pushed straight and
equally toward the back of the dropouts.
3) Check the tire pressure, making sure the tire pressure is exactly
the same on all three tires.
4) Roll test the stroller as described below. It is recommended you
have someone assist with this task in order to catch and return the
stroller. Fig. 1 illustrates the roll test process.
a. Empty the stroller. Do not roll test with a child or any occupant
in the stroller.
b. Find a location on level ground approximately 16 ft. long. It is
helpful to use an existing straight-line as a frame of reference such
as the edge of the sidewalk or a painted line in a playground.
c. Align the stroller so the rear wheels are perpendicular to the
straight line. Push and release the stroller trying carefully not to
influence its direction to the left or right so it rolls straight down the
test path. This step should be performed more than once to make
sure the stroller was not biased left or right by the pushing action.
d. If the stroller consistently pulls to the left or right when pushed
straight, proceed with the steps below until tracking is satisfactory.
Fig 1. illustrates how to interpret the results.
Reference convention: Left and right are described as viewed from
the operator’s frame of reference (behind the stroller). Example: The
parking brake lever is on the left side of the handlebar.
5) Rotate the front axle. Often tracking can be corrected by simply
rotating the front wheel axle.
a. Open the front wheel quick release, step 6 of the Owner’s Manual.
Rotate axle 90 degrees in dropout, Fig. 2 and retighten quick
release.
b. Perform roll testing again. If the stroller still consistently pulls to
the left or right when pushed straight, proceed to next step.
6) Reorient the front wheel. Many times the tracking can be corrected
by removing the front wheel and flipping it around and reinstalling it.
a. Open the front wheel and front brake quick releases, step 6 of
the Owner’s Manual. Remove the front wheel and flip it around so
the quick release lever is on the opposite side, Fig. 3. Reinstall the
front wheel, secure the
wheel and brake quick
release levers.
b. Perform roll test again.
If the stroller still
consistently pulls to the left
or right when pushed
straight, proceed to next
step.
7) Fine tune tracking of
stroller is accomplished by
using the adjustment knobs
shown in Fig. 4.
If your stroller pulls to the
right, proceed as follows:
a. Open quick release lever
on front wheel, step 6 in
the Owners Manual. It is
not necessary to remove
the front wheel.
b. Turn the right knob
clockwise 1-full turn, as
shown in Fig. 5, thereby
pushing the right side of
the wheel forward.
Retighten quick release.
c. Repeat Roll test. If
stroller still pulls to the right,
repeat steps A and B.
If your stroller pulls to the
left, proceed as follows:
a. Open quick release lever
on front wheel, step 6 in
the Owners Manual. It is
not necessary to remove
the front wheel.
b. Turn the left knob
clockwise 1-full turn, as
shown in Fig. 6, thereby
pushing the left side of the
wheel forward. Retighten
quick release.
c. Repeat Roll test. If
stroller still pulls to the left,
repeat steps A and B.
Turn Knob Clockwise
1 Full turn
Fig. 5
Right Adjust Knob
Fig. 6
Left Adjust Knob
Turn Knob Clockwise
1 Full turn
Wheel Reoriented
With Quck Release
Lever On Opposite
Side
Fig. 3
Reorient Front Wheel
Rotate axle 90
o
Fig. 2
Rotate Axle
Left
Adjust Knob
(Fig. 6)
Right
Adjust Knob
(Fig. 5)
Front
Wheel
Fig 4.
Adjust Knobs
MA0501
Fig. 1
Stroller Roll Test
Top View Of Stroller
16’
Stroller pulls
to left
90
o
Wheel axles
perpendicular
to straight line
Stroller pulls
to right