ConvaQuip 600 LJ User manual

38 HOSS Jr. - Owner's Manual
PN 600LJ
Revised 0404
Hossvm.p65
READ this entire Owner's Manual BEFORE you
operate your new power wheelchair!
Model 600 LJ
HOSS Jr. Owner's Manual

HOSS Jr. - Owner's Manual 1
Table of Contents
THIS MANUAL COVERS THE OPERATION OF YOUR NEW
HOSS Jr. POWER WHEELCHAIRS. BE SURE AND FIND THE
INFORMATION THAT PERTAINS TO YOUR NEEDS BEFORE OPERATING.
Introduction 2
Important Safety Information 3
HOSS Jr. Specifications 12
Getting On and Off The HOSS Jr. 13
Operating the HOSS Jr. 14
Controller Instructions 16
Your First Ride 17
The HOSS Jr. Braking Systems 18
Brake Disengage Mechanism 18
Seat Assembly Operation 19
Disassembly & Assembly 20
Charging Your Batteries 22
General Care, Diagnostic & Maintenance Section 28
Diagnostics & Faults 32
Commonly Asked Questions and Possible Answers 33
PN500LJ
Revised0404
Hossvm.p65

2 HOSS Jr. - Owner's Manual
HOSSJr. OWNERSMANUAL
Introduction
Congratulations on yourchoice of a Hoss Jr. wheelchair! It is a
dependable vehicle built for power and performance. Its easy to operate controls
give you more of what you are looking forin a wheelchair.
But it is important that you understand what your wheelchair is, and
what it is not. Our wheelchairs (like all wheelchairs) are designed to provide safe,
reliabletransportation toolderormoderatelyphysicallydisabledindividualswho
have difficulty in getting around. It will safely take you everywhere the specifica-
tions indicate as long as you follow the simple safety guidelines shown on the next
few pages. Hoss Jr. is not all terrain vehicles that you can use out in the fields to
dragbrusharoundorclimbsteephills. Itwasnotmeanttogohuntingin,ortrans-
port you thru hazardous environments. It also was not designed for the severely
handicapped individual who should not be in a power wheelchair. You must have
good stability, motor control and above all else, good common sense to use our
wheelchair, or any other brand. If you feel that you cannot safely operate this
vehicle at all times, you should not use this wheelchair!
Important
Please read the entire manual carefully before attempting to drive
your new Hoss Jr..
Remember toreadallservicerecommendationsoutlinedinthismanual
to achieve trouble free, safe and enjoyable operation of your Hoss Jr.. Failure to
follow the recommended service procedures will damage yourwheelchairand such
damage is not covered underwarranty. Contact yourdealerif you have questions
afterreadingthismanual.
ConvaQuipInd.,Inc.specificallydisclaimsresponsibilityforany bodily inju-
ries or property damage which may occur during or because of improperuse or
any use which does not comply with applicable Federal, State, or Local laws
and ordinances or methods recommended in this manual. If in doubt about
yourability to operate your Hoss Jr., consult yourdoctor.

HOSS Jr. - Owner's Manual 3
NOTE: MODIFYINGAND/OR TAMPERING INANY UNAUTHORIZED MAN-
NER WITHTHEWHEELCHAIRWILLVOIDTHEWARRANTYANDMAYCAUSE
THEWHEELCHAIRTOMALFUNCTION,EXPOSINGYOUTOPHYSICALHARM.
ATTENTION:This manual contains specific informationabout yourHoss Jr.. While
some of the information is the same for all wheelchairs, make sure that you follow the
specifications and directions that apply to the Hoss Jr.. If you are unsure of the style
Hoss Jr. you have, contact yourdealer.
Your Hoss Jr. is a vehicle which provides independence and freedom to people with
limitedmobility. Drivererrorcancauseinjurytothedriverandtoother people. Please
usecommonsense,courtesy,andobey the followingguidelinesforvehicleoperation.
READTHISENTIREMANUAL
BEFOREDRIVINGTHISVEHICLE.
Safety Guidelines
Always turn thepowerswitchtotheOFFpositionwhen stoppedorwhengettingofforonthe
Hoss Jr..This keeps you from accidentally hitting the throttle and causing an accident.
For persons with limited lower body strength, or persons who make slidetransfers and
mayforgettoturnthe powerswitchoff,werecommendspecialcaution.
DO NOT operate the unit if it behaves erratically, or shows abnormal response, heating,
smoking or arcing. Turn the system off at once and call your dealer for service.
Use extra caution when riding yourHoss Jr. off of the pavement or on rough, uneven or soft
surfaces tipping and injurymay result.
Do not exceed the incline specifications for your Hoss Jr. wheelchair or it will become
unstable and tipping will result. Persons with limited ability to protect themselves (like
persons paralyzed on one side) should use protective equipment such as bicycle head-
gear.Thespecificationchartinyourmanualwillindicatethemaximuminclineforyour
particular style wheelchair.

4 HOSS Jr. - Owner's Manual
Keep your feet on the footrests while riding the Hoss Jr. to avoid hittingthemon
objects as you drive.Always wear shoes while operating your wheelchair.
Alwayswearyourlapbeltwhenridingyourwheelchair.
Lock the seat assembly before operating the Hoss Jr. to prevent yourself from falling
from the seat while moving.
Remember, The Hoss Jr. is built to carry a single person. Do not carry passengers
under any circumstances or accidents and bodily injury will occur.
Always go straight down curb cuts no greater than 3" or in a ditch go straight up curb
cuts no greater than 2", not at an angle. You want the front wheels and the rear
wheels to climb up or go down together, not one at a time. Not doing this will
result in the wheelchair violently swinging from side to side (as a car would in a
ditch) or the wheelchairs overturning. Also approach curb access ramps the
same way, straight on, not at an angle. NEVER attempt to go up or down a regular
height curb or tipping and personal injury will result!
Warning Driving the Hoss Jr. in busy streets, busy parking lots, or in crowded shopping
mallscanbedangerousfor you or other peopleasyoumaybestruckbyavehicleor
you might strike a pedestrian. Use caution in congested areas at all times.
Leanforwarda slight amount when traveling up an incline.
NEVER leave your wheelchair exposed to the elements. This includes storage outside
or carrying the wheelchair on an outside car-lift during periods of high mois-
ture ( mist, rain, snow, etc.) or any other inclement weather (dust or sand storms,
etc.). Use only a damp rag to clean your wheelchair (never use solvents or abra-
sive cleaners). The use of excessive water, as from a garden hose or bucket may
cause damage to your wheelchairs electronics.
Usecautionwhen driving off even a small curb or raised surface (with a 3" maximum).
The act of dropping off the edge subjects the wheelchair to extreme forces that
can damage the frame and other components. This type of damage is not covered
under warranty.

HOSS Jr. - Owner's Manual 5
Disconnectthebatteriesbeforeperformingany maintenanceorif youwillnotberiding
thewheelchairformorethan afewdays.Thisavoidsboththepossibilityofinjuries
due to shock and helps lengthen the battery life. Make sure that the batteries are
secure when you are using the wheelchair.
Follow the directionsof your doctor and/or pharmacist at all times. Do not drive
the Hoss Jr. while taking medications that affect your reflexes or judgment, as your
driving will be impaired and accidents may result. Do not drinkalcohol or useany other
stimulants while operating this or any other vehicle.
The following are important things to help you drive the Hoss Jr. in the safest
possible manner. Please take note of each and every one.
WARNING DO NOT engage in the following activities with your Hoss Jr. or
serious personal injury may result.
..... ride the Hoss Jr. with the brake disengaged at anytime.
.....drive the Hoss Jr. diagonally across inclines, turn sharp on an incline or make
turns at or near full throttle at any time. Doing this will result in the wheelchair losing
traction and control which can result in tipping and possibly serious injuries.
....drive the Hoss Jr. with the seat assembly higher than necessary as tippingandse-
rious injury may result. The lower the seat, the better your stability.
.....drive the Hoss Jr. with under-inflated tires as this increases the possibility of
tipping and injury. Your stability and efficiency (power and range) are also greatly
affected.
.....remainseatedonyourwheelchairwhileitisbeingloadedintoa vehicleusing
anythingotherthana special wheelchairlift, orpersonal injurymay result.
.....use the Hoss Jr. as a seat in a moving vehicle. Because no wheelchair is designed
to withstand the impact of any automobile accident. The ridershould seated in a regular
automobile seat and restrained by an approved automobile safety belt.Also, the wheelchair
and batteries MUST be independently and properly restrained or stored in a separate
compartment so as to prevent it from causing injury in an accident.

6 HOSS Jr. - Owner's Manual
.....ride on soft, uneven surfaces as this can cause lose of traction and control
causing tipping and that may result in serious injury.
.....stop on any incline to rest or dismount.Although the electric brake will stop
and hold you, it is best to stop in level, flat areas where there is no possibility of
rolling, or tipping the unit or having the occupant fall out.
.....ride your wheelchair without wearing your lap belt at all times or serious
injury may result. This is especially important on ramps or inclines.
.....drive up, down or across inclines greater than the rating for your style
Hoss Jr. or tipping will result. Refer to the Specification Sheet and Ramp
Incline Chart on the back page of this manual (Please Note: Soft surfaces reduce
the incline capability by more than 50%). Wet or slick surfaces reduce steering
and braking controls tremendously. Use extreme caution in these circumstances.
.....allow the Hoss Jr. controls to become wet. Never wash off the wheelchair
using a hose or a stream of water, drive through standing water or ride in the rain.
Possible loss of control and/or electronic damage will occur. Do not attempt to
ride a wheelchair that has been soaked until it has had a chanceto dry thoroughly.
.....leave the Hoss Jr. where it is exposed to high temperatures (a car trunk, etc.)
or to poor weather conditions such as rain or snow or freezing conditions as
damage to the unit will occur.
.....disassemble any wheel at any time while still inflated. The pressure may
blow wheel rims apart while you are loosening them.
.....ridethe unitnearstairs, ledgesorinanyotherpotentiallydangerous situation as
serious injury can result.
.....ride the wheelchair over power cords, oxygen lines, hoses or any other mate-
rial that could become entangled in the wheels or get caught in the drive mecha-
nism of the wheelchair or while connected to equipment off of the wheelchair.
DO NOT attempt to reach objects if you have to move forward in the seat.
DO NOT attempt to reach objects if you have to pick them up from the floor by reaching
down between your knees.

HOSS Jr. - Owner's Manual 7
DO NOT lean over the top of the seat back to reach objects from behind as this may cause
the wheelchair to tip over or cause you to fall out.
DO NOT shift your weight or sitting position toward the direction you are reaching as the
wheelchair may tip over.
DO NOT tilt the wheelchair without assistance.
DO NOT use an escalator to move a wheelchair between floors. Serious bodily injury may occur.
ALWAYS turn the wheelchair power OFF and engage the motor locks/clutches to prevent
the wheels from moving BEFORE attempting to transfer in or out of the wheelchair. Also
make sure every precaution is taken to reduce the gap distance.
DO NOT engage or disengage the motor locks/clutches until the power is in the OFF position.
DO NOT operate on roads, streets or highways.
DO NOT climb, go up or down hard surface ramps greater than 7 degrees or soft surfaces
of greater than 5 degrees.
DO NOT attempt to move up or down an incline with a water, ice or oil film or loss of
control & braking will result.
DO NOT attempt to drive over curbs or obstacles taller than 2.5". Doing so may cause
your wheelchair to turn over and cause bodily harm or damage to the wheelchair.
DO NOT use unauthorized parts, accessories, or adapters other than those authorized by
ConvaQuip Ind., Inc..
DO NOT attempt to lift the wheelchair by lifting on any removable (detachable) parts.
Lifting by means of any removable (detachable) parts of a wheelchair may result in injury to
the user of damage to the wheelchair.
DO NOT stand on the frame of the wheelchair.
DO NOT use the footplate as a platform. When getting in or out of the wheelchair, make
sure that the footplate are in the upward position or swing footrests towards the outside of
thewheelchair.
ALWAYS wear your lap belt.

8 HOSS Jr. - Owner's Manual
ELECTRICAL
EXTREME care should be exercised when using oxygen in close proximity to electric
circuits. Contact your oxygen supplier for instruction in the use of oxygen.
Grounding instructions:
DO NOT, under any circumstances, cut or remove the round grounding prong from any
plug used with or for ConvaQuip Ind., Inc. products. Some devices are equipped with
three-prong (grounding) plus for protection against possible shock hazards. Where a two-
prong wall receptacle is encountered, it is the personal responsibility and obligation of the
customer to contact a qualified electrician and have the two-prong receptacle replaced with
a properly grounded three-prong wall receptacle in accordance with the National Electrical
Code. If you must use an extension cord, use ONLY a three-wire extension cord having
the same or higher electrical rating as the device being connected. In addition, ConvaQuip
Ind., Inc. has placed RED/ORANGE WARNING TAGS on some equipment. DO NOT
remove these tags. Carefully read battery/battery charger information prior to installing,
servicing or operating your wheelchair.
RAIN & MOISTURE
LEISURE-LIFThas established the following rules for dealing with moisture.
End user or their attendant should allow sufficient time to remove his/her power wheelchair
prior to a rain storm or inclement weather to retain wheelchair operation.
DO NOT leave your power wheelchair in a rain storm of any kind.
DO NOT use your power wheelchair in a shower or leave it in a damp bathroom while
taking a shower.
DO NOT leave your power wheelchair in a damp area for any length of time.
Direct exposure to rain or dampness will cause the wheelchair to malfunctionelectrically
and mechanically; may cause the wheelchair to prematurely rust.
Check to ensure that the batteries are secured in place, the joystick boot is NOT torn or
cracked where water can enter and that all electrical connections are secure at all times.
DO NOT use the joystick if the boot is torn or cracked. If the joystick boot becomes torn
or cracked, replace IMMEDIATELY.

HOSS Jr. - Owner's Manual 9
WEIGHT TRAINING
ConvaQuip Ind., Inc. DOES NOT recommend the use of its Hoss Jr. as a weight training
apparatus. Wheelchairs have NOT been designed or tested as a seat for any kind of weight
training. If occupant uses said wheelchair as a weight training apparatus, ConvaQuip Ind.,
Inc. shall NOTbe liable for bodily injury and the warranty will be voided immediately.
SAFETY/HANDLING OF WHEELCHAIRS
“Safety and Handling” of the wheelchair requires the close attention of the wheelchair user
as well as the assistant. This manual points out the most common procedures and tech-
niques involved in the safe operation and maintenance of the wheelchair. It is important to
practice and master these safe techniques until you are comfortable in maneuvering around
the frequently encountered architectural barriers.
Use this information only as a “basic” guide. The techniques that are discussed on the
following pages have been used successfully my many.
Individual wheelchair users oftendevelop skillsto deal with daily livingactivities that may
differ from those described in this manual. ConvaQuip Ind., Inc. recognized and encour-
ages each individual to try what works best for him/her in overcoming architectural ob-
stacles that they may encounter. Techniques in this manual are a starting point for new
wheelchair users and assistants with “safety” as the most important consideration for all.
STABILITYAND BALANCE
WARNING
Always wear your lap belt.
To assure stability and proper operation of your wheelchair, you must at all times maintain
proper balance. Your wheelchair has been designed to remain upright and stable during
normal daily activities as long as you do not move beyond the center of gravity.
The anti-tip wheels are normally positioned approximately two inches off the ground (with a
rider in the chair) but may be adjusted in height downward by your dealer. Because Hoss Jr.
is a "midi" (3/4) drive chair the anti-tip wheels are normally only used when braking going
forward down a steep incline. Reducing this setting causes the powerchair to tilt forward at a
lesser angle before resting on the anti-tip wheels if you decelerate rapidly while going down a
hill. The normal adjustment should allow the Hoss Jr. to easily climb a two inch obstacle.
DO NOT lean forward out of the wheelchair any further than the length of the armrests.

10 HOSS Jr. - Owner's Manual
STAIRWAYS - WARNING
DO NOT attempt to move an occupied power wheelchair between floors using a stairway
or escalator. Use an elevator to move an occupied power wheelchair between floors. If
moving a power wheelchair between floors by means of a stairway, the occupant MUST be
removed and transported independently of the power wheelchairAgain, DO NOT use an
escalator to move a wheelchair between floors. Serious bodily injury may occur..
Extreme caution is advised when it is necessary to move an UNOCCUPIED power wheel-
chair up or down the stairs. ConvaQuip Ind., Inc. recommends disassembling your wheel-
chair into smaller, more manageable components to keep from personal injury. Lifting by
means of any removable (detachable) parts of a wheelchair may result in injury to the user
or damage to the wheelchair.
Follow thisprocedure formovingwheelchairbetween floors when anelevator isNOTavailable:
ESCALATORS - WARNING
DO NOT use an escalator to move a wheelchair between floors. Serious bodily injury may occur.
TRANSFERRING TO/FROM OTHER SEATS
WARNING
ALWAYS turn the wheelchair power OFF and engage the motor locks/clutches to prevent
the wheels from moving BEFORE attempting to transfer in or out of the wheelchair. Also
make sure every precaution is taken to reduce the gap distance.
CAUTION
When transferring, position yourself as far back as possible in the seat. This will prevent
damaging the upholstery and the possibility of the wheelchair tipping forward.
PERCENTAGE OF WEIGHT DISTRIBUTION
WARNING
DO NOT attempt to reach objects if you have to move forward in the seat or pick them up
from the floor by reaching down between your knees.
Many activities require the wheelchair user to reach, bend and transfer in and out of the
wheelchair. These movements will cause a change to normal balance, center of gravity, and
weight distribution of the wheelchair. To determine and establish your particular safety
limits, practice bending, reaching and transferring activities in several combinations in the
presence of a qualified health professional BEFORE attempting active use of the wheel-
chair. Remember. . . Keep your lap belt on at all times.
Never roll backward down an incline as caster rotation reduces rearward stability.

HOSS Jr. - Owner's Manual 11
REACHING, LEANING, BENDINGAND BENDING - FORWARD
Position the rear casters so that they are extended as far rearward as possible and engage
motor locks/clutches. DO NOT LEAN FORWARD OF THE ARMRESTS.
REACHING, BENDING - BACKWARDS
WARNING
DO NOT lean over the top of the back upholstery. This will change your center of gravity
and may cause you to tip over.
Position wheelchair as close as possible to the desired object. Point rear casters rearward
to create the longest possible wheelbase. Reach back only as far as your arm will extend
without changing your sitting position.
Personshavingdisabilitieswhichlimittheirabilityto remainerectwithoutassistance,
(strokepatients,severe musculardiseases,etc.)shouldcarefullyevaluatewhetherthey
should operate a wheelchair at all. If they decide, with the adviseof their physicianor
another advisor, that they are capable of safely operating a wheelchair, they should consider
the use of a bicycle helmet or pads when operating a wheelchair. These articles would help
protect them should they find themselves ina hazardous situation where they couldtip over
or fall because of their lack of balance.
DIFFERENT STYLES OF WHEELCHAIRS HAVE DIFFERENT INCLINE CLIMBING
ABILITIES. CAREFULLY STUDY THE CHART TO SEE THE CORRECT SPECIFICA-
TIONS FORYOUR UNIT. DO NOT EXCEED THE SPECIFICATIONS OF THE WHEEL-
CHAIRSTYLEYOUPURCHASED!

12 HOSS Jr. - Owner's Manual
SeatWidthRange:
SeatDepth:
Seat-to-Floor:
Seat-to-Footrest
OverallWidth( Nojoystick):
OverallHeight:
OverallLength
Weight Motor/SuspensionsSection
Footplate/FrontAnti-TipSystem
SeatandController
TOTAL
Batteries(2)
CompleteW/Batteries(GelCell):
Battery/Size(NotSupplied)
Speed:Adjustable
Range*:
TurningRadius:
GroundClearance
MaxCurbClimbing
Max.InclineStability
Hard Surface
Soft Surface
TirePressure
FrontAnti-TipWheels
MainDriveWheels
CasterWheels
Max.WeightCapacity
SPECIFICATIONS
Hoss Jr.
24" - 30"
19.5",21",22.5"
19.3"-21.3"(uncompressedfoam)
13.9"-17.9"(uncompressedfoam)
28.5" (outsidetiretooutside tire)
39" - 41"
49"
PnuematicTires FilledTires
106.5 lbs. 136lbs.
23lbs. 23lbs.
58.5lbs. 58.5lbs.
188lbs. 217.5lbs.
58.5 lbs.each 58.5lbs.
305lbs. 344.5lbs.
Group24
4.6 mph Max. at 500 lbs.
18-20 miles (varieswith weight)
27"
3"
2.5"
o
7o
5
Solid
FlatFree-Std (50psiwithoptionalpneumatic)
FlatFree-Std (50psiwithoptionalpneumatic)
500lbs.
Do Not Exceed The Maximum Incline Stability For Your Style Power Wheelchair!
Incline stability (maximum up-hill angle) is determined using applicable RESNA & ISO criteria for determining static and
dynamic stability (ISO 7176-1& 2,ANSI WC/01& 02).Tests are conducted using the maximumrider weight specified in the
owners manual and the seat in its' least favorable position.
*Range based on 600 lb. rider on a hard level surface with Group 24 batteries. Customer's range may vary according to
customer's weight.
7 degrees = 12%

HOSS Jr. - Owner's Manual 13
GettingOnand OffThe HossJr.
The following is a recommended method for getting on your Hoss Jr..
1. The wheelchair should be stopped on a flat, level surface with the power switch
in the OFF position (no visible lights).
(SEE WARNING AT BOTTOM OF PAGE)
2. Raise the foot rest plate so that you may back up to the wheelchair
squarely.
3. Position yourself squarely in front of the seat and lower yourself into the seat
using the armrests if necessary. (Never use the control housing or joystick as a sup-
port while getting on and off the wheelchair.)
4. Lower the footrest and place your feet securely on the footrest.
5. Buckle the safety belt around yourself belt to help hold yourself securely in the chair.
6. Push the power button on the speed control, the LED lights should activate.
7. When seated comfortably, you can drive the Hoss Jr..
The method for getting off is the reverse procedure.
1. Turn the power switch OFF when stopped (no visible lights).
2. Unfasten your safety belt and raise (or have someone raise) the footrest bracket.
3. Make sure your feet are planted firmly on the ground and stand up.
WARNING
Keep the power button in the OFF position at all times when stopped or when getting on
or off the wheelchair. Sudden accidental movement of the wheelchair will be avoided
with the power switch in the OFF position.
Tipping can occur if you get on the Hoss Jr. in a manner other than recommended.Tipping
can be avoided by keeping your weight away from the outer edges until seated. If you step
into the wheelchair, sit directly in the center of the seat, not near the edge. Tipping may also
occur if you turn thejoystick sharply while traveling at or near full throttle.

14 HOSS Jr. - Owner's Manual
Operatingthe Hoss Jr.
Controls for Hoss Jr's operation are located on the arm mounted joystick console and the power
module mounted to the frame. Become familiar with all controls with the power button in the OFF
position. Each is described in the following section
Joystick Console
1. TURNING THE POWER ON Press the Power button.All indicators will flash briefly.
The current state of battery charge willbe displayed and the powerchair may be operated as normal.
Note: If the SHARK is turned on while the joystick is out of neutral, an OONAPU fault will be
displayed - refer to table on page 26. Release the joystick back to neutral and the fault will
disappear.
OONAPU (Out Of NeutralAt Power Up) is a feature that prevents SHARK for driving if the joystick
is out of neutral when SHARK is turned on or an inhibit condition removed.
This feature prevents sudden and unexpected powerchair movements.
1.1 TURNING THE POWER OFF Press the Power button. The LED's will turn off.
Note: Alternatively, SHARK may a be placed into a Lock Mode. This may be preferable to turning
the power off if leaving the powerchair at a place where unauthorized persons may attempt to use
the powerchair.
2. SPEED SETTING KNOB The speed knob is used to adjust the top speed of the
chair without a loss of power. It ranges from slow to fast. Alow setting (smallest mark on
the knob upward) should be used indoors on in tight areas where speed is not required. A
higher setting of medium to fast (larger marks on the knob upward) can be used outdoors
and in open areas where higher speeds are manageable. PLEASE NOTE: This drive system
has a power compensation feature which allows you to leave the knob set at a lower speed on
a ramp, incline, or soft surface and still maintain sufficient power.
3. BATTERY INDICATOR. The SHARK Information Gauge (located on the
joystick console) is the primary source of user feedback. It displays every possible status
that SHARK may have.
True state-of-battery-charge, including notification of when the battery desperately requires
charging.
• Any green LED's lit indicates well-charged batteries.
• If only amber and red LED's are lit, the batteries are moderately charged.
Recharge before undertaking a long trip.
• If only red LED's are lit the batteries are running out of charge. Recharge as soon
as possible.

HOSS Jr. - Owner's Manual 15
4. THROTTLE CONTROL JOYSTICK LEVER. The black knob mounted on
the top of the control panel is both the throttle and direction control lever (Push Slowly).
Pushing the lever with your thumb in the direction of the horn button on the control
faceplate will make the wheelchair go forward or backward accordingly. Pushing the lever
in slightly will makes the wheelchair begin to move. The further you depress the lever, the
faster the wheelchair moves. The top speed set by the SPEED KNOB is reached by fully
depressing the joystick lever. Completely releasing the lever will stop power to the motor,
activate the brakes, and you will come to a complete stop. For faster stops in forward,
pull the joystick into reverse until the unit stops moving, then release the throttle.
5. HORN BUTTON
Yourunit also comes equipped with a built in horn, activated by depressing the horn button.
PLEASE NOTE:
Should the joystick /
brake control system
not stop the unit, turn-
ingthepowerswitchoff
will engageall brakes
and stop the unit
abruptly.This backup
systemshould onlybe
used in the unlikely
event that the primary
brake control is dis-
abled, as the quick
stop could CAUSE YOU TO SLIDE OFF THE WHEELCHAIR. Remember to wear
your lap belt.
6.LOCKING THE SHARK Some SHARK's may be supplied factory programmed
with a LOCK Feature that prevents unauthorized people from turning the SHARK on.
TO LOCK:
While the power is ON, press and hold the Power button for 2 seconds. The horn will sound
a short beep and all LED's will flash briefly. The powerchair will then turn off.
TO UNLOCK:
While the SHARK is locked, press the Power button to turn the SHARK on.All LED's will
flash briefly.The LED's will then perform a right-to-left "chase". Press the Horn button twice
before the timer completes its pass (approximately 6 seconds). The current state-of-charge
will then be displayed and SHARK may be operated normally.
Note: If the user does not press the Horn button twice within the time limit, the Horn will
sound a short beep and SHARK will turn itself off. The unlock sequence must be completed
successfully before the SHARK will drive again normally.
1.
2.
3.4.
5.

16 HOSS Jr. - Owner's Manual
Pushing the Control
Knobstraightforward
will cause the wheel-
chair to move in a for-
ward direction. Your
speed is determined
by how far forward
you push the control
knob and by the speed
control setting (# 2).
Pulling back on the
Movingtheknobdirectlyto
the left (while stationary or
moving)willcausethechair
to turn to the left. Con-
versely, moving to the right
willcauseittoturnright. If
youare stationary, the chair
will tend to rotate where it
sits. You may use this to
position your self in place,
or to prepare to travel in a
knob causes the
wheelchair to move in
the reverse direction
differentdirection.
FULL SPEED
LEFT TURN
GRADUALLYBACK
TOWARD THE RIGHT
FULL SPEED
RIGHT TURN
GRADUALLYBACK
TOWARD THE LEFT
The difficult part of controlling a power wheel-
chair is all of those moves in between the four
maindirections.Shownherearedifferentdirec-
tions for turning the wheelchair as you operate
the vehicle, but remember these moves may be
anywhere in between, it depends on the direc-
tion of travel required at the time. The impor-
tant thing to remember is that in the forward
positions,thejoystickislikeapointer,pointand
that is the direction you will go. In reverse, the
pointer is indicating the direction the front of
the wheelchair will go, not the back. The best
thingtodois learntooperateyourpowerwheel-
chair in a large flat open space, and practice
making the chair move in the direction you de-
sire.
METHODSFORCONTROLLINGTHEDIRECTION OF
YOUR HOSS JR POWER WHEELCHAIR.
In an emergency or a "Quick-Stop" situation, you may pull straight back
on the control knob momentarily to cause the motors to apply reverse
current and stop quickly. Use extreme caution, as this may cause your
body to pitch forward in the chair.Always wear your lap belt.

HOSS Jr. - Owner's Manual 17
For your first ride, we recommend the following.
Whenpossible,alwaysworkwithyourdealerortherapisttolearnhowtouseyourwheelchair.
Differentchairshavedifferentadjustablefeaturessuchasspringsuspension,programmablecontrollers,
front anti-tips, footrest height & angle, length adjustments and arm adjustments etc.
Workwith yourdealerto make surethewheelchairisspecificallyfittedtoYOURneeds.
1. Make sure the area is a flat, hard, smooth, open and free of obstacles.
2. Make sure your lap belt is securely fastened and the seat is securely locked.
3. Turn the SPEED setting knob to low.
4. Depress the power switch to turn the power switch to ON.
5. Push the control knob forward to go forward.
6. Steer the chair in different directions to get a feel for how the controls operate.
7. SLOWLY rotate the SPEED setting knob clockwise up from the slow position.
Rotate the knob until the desired top speed is reached. Remember, power compen
sation will automatically gives you more power and allows you to keep a slower
speed should you need it.
8. Release the control knob to come to a stop. Take note of how the braking
feels. The clicking you might hear upon starting, and shortly after releasing the
control knob is the Electric Brake disengaging and engaging.
9. Push the control knob backwards to thumb to go backward. There is a forty-five
percent (60%) reduction in speed in the reverse directionWithout any change in the
SPEED setting knob. Always make sure the area is clear behind you before backing up.
10. Remember to turn the power button OFF (no visible lights) when not driving, or
getting on or off the wheelchair.
Speed controller characteristics are pre-set for the average rider. The anti-tip wheels are normally
positioned approximatelytwo inches off the ground (with a rider in the chair) but may be adjusted in
height downward by your dealer. Because Hoss Jr. is a "midi" (3/4)drive chair the anti-tip wheels
are normally only usedwhen braking going forward downa steep incline. Reducing this setting
causes the powerchair to tilt forward at a lesser angle before resting on the anti-tip wheels if you
decelerate rapidly while going down a hill. The normal adjustment should allow the Hoss Jr. to
easily climb a 2 1/2 inch obstacle.
Warning
The Hoss Jr. is designed for high maneuverability but use caution when encountering obstacles.
Failure to drive cautiously can result in tipping and/or collisions which may cause physical harm.
When approaching an obstacle, keep your speed at a minimum and maintain a safe distance from that
object. Avoidallsmallobjectsontheground.The wheelchair'sgroundclearancemaybe less thanthe
size ofthe object. Runningoveran objectorintoa depressioncouldcauseoverturning,ordamageto
the wheelchair. NEVER ride the unit near platforms, stairs, ledges, curbs or in any other potentially
dangerous situationas severe injury can occur.

18 HOSS Jr. - Owner's Manual
2. Dynamic Braking is activated WITHOUT delay when all power is stopped to
the motor by bring the control knob back to the center position, as when coming to a com-
plete stop. This braking works until the Posi-Lock Electric brake is activated.
3. Posi-Lock Electric BrakingDisk isactivated with delay when all power is stopped to the
motor.Thiselectric brakehasashort delayandultimatelyholdsthe HossJr. atacomplete stop.The
wheelchair cannot be moved when this brake is activated. Dynamic Braking works in conjunction
with Posi-Lock Electric Braking to bring you to a gradual and complete stop.
MOTOR/BRAKE DISENGAGE MECHANISM
The Hoss Jr. is equipped with one Motor/Brake Disengage lever (one for the entire
motor). This systems allows the wheelchair to be moved in the event the batteries are run
low, or there is a malfunction. To operate the Motor disengage mechanism, turn the power
off to the wheelchair and push the handle completely backwards. The motor/brake combi-
nation is now disengaged and the wheelchair will not operate, but will roll freely.
Caution:
DO NOT ride the Hoss Jr. with Motor/Brake Disengage Mechanism activated since
there is a strong possibility an accident with injuries will occur. Should you experience any
type of brake system malfunction, DO NOT ride or sit on the wheelchair. Have the system
repaired immediately!
The HossJr.BrakingSystems
The Hoss Jr.'s brake systems allow for smooth start up and safe braking without
undue jerking. There are three (3) separate modes to the braking system: Regenerative,
Dynamic, and Posi-Lock Electric Braking. All braking occurs automatically during wheel-
chair operation. Each type of braking is described in the following.
1. Regenerative Braking is activated while driving the Hoss Jr. down an incline.When
the wheelchair picks up speed going down the incline, the motor generates electricity. This
electricity is channeled back through the Hoss Jr. electronic control circuits to recharge the
batteries. This action keeps the wheelchair from picking up excess speed and provides for
smooth speed control.

HOSS Jr. - Owner's Manual 19
SHOULDTHEBRAKEDISENGAGEONAWHEELCHAIREVERAPPEARTOWORK
POORLYORINCORRECTLY, STOPRIDINGIMMEDIATELYANDCONTACTYOUR
DEALERFORSERVICE!
SeatAssemblyOperation
Hoss Jr. comes with removable/height adjustable arms.These arms are designed to provide support
for your arms while seated on the wheelchair, and for assistance when getting on and off of the
wheelchair. Each arm is designed to hold 300 pounds, and NOT THE PERSONS TOTAL
BODY WEIGHT. Persons with no use of their legs, or no ability to transfer weight to the floor
should seek other means of assistance (slide board, helper, etc.) when transferring in and out of the
wheelchair. Armfailurewillresultifexcessweightisappliedtothearm.
Width adjustable arm adjustments
1. Loosen the black knobs under the edge of the seat. Rotate counter clockwise
to loosen.
2. Slide the armrests in or out as needed.
3. Tighten the black knobs. Rotate clockwise to tighten.
Should you wish to remove the armrests, simply pull them out when the knobs are loose.
Remember to tighten the knobs to avoid their loss.
Seat Height Adjustment
The seat assembly is height adjustable.
1. Remove the seat assembly by un pinning the seat and lifting the seat assembly
straight up. Set aside.
2. Locate the seat height adjustment bolts and nut located on the post where pins were
removed.
3. Remove the bolt, nut, and washers. Take note of
their position in order to correctly replace them.
4. The seat height post will now move up anddown.
5. Position the seat height to new desired position.
6. Replace the washers, bolt, and nut in their
proper order. Tighten until all play is eliminated.
7. Replacetheseatassemblyand testthenewheight.
It is recommended that the seat assembly be positioned at the lowest comfortable seat
height. Hoss Jr.'s stability will be improved with a lower height.