HAKO Sweepmaster P900 R User manual

Operating manual
Sweepmaster P900 R (6502.15)
Sweepmaster B900 R (6502.20)

2
Introduction
Foreword
Dear Customer,
We are certain that the excellent quali-
ties of the machine will justify the faith
you have shown in us by your
purchase.
Your own safety, as well as the safety of
others, depends essentially on your
ability to control the machine. Please
read this original operating manual be-
fore you use the device for the first time,
act accordingly and keep these instruc-
tions for future reference or subsequent
users. To guarantee safe working with
the machine, please read the Safety
Notes chapter before putting it into
service.
The operating manual contains all im-
portant information for operation, main-
tenance and care. We have provided
the places in this operating manual con-
cerning your safety with a danger picto-
gram. Your authorised Hako dealer is
available at all times to answer further
questions about the machine or the
operating manual.
We would expressly advise you that no
legal claims may be asserted based on
the contents of this manual. In the case
of necessary repair work, please make
sure that only original spare parts are
used. Only original spare parts guaran-
tee constant and reliable operational
readiness of the device. We reserve the
right to make changes in the interests of
further technical development.
Valid as from: April 2014
Hako GmbH
23843 Bad Oldesloe, Germany
Hamburger Str. 209-239
Phone [phone]
Intended use
The Sweepmaster is a sweeper de-
signed for commercial use and intend-
ed exclusively for collecting dry and wet
dirt in manufacturing plants, warehous-
es, car parks and pedestrian zones.
Any use extending beyond this is not in-
tended use. The manufacturer is not li-
able for any damage resulting from this
and the user alone bears the risk. The
sweeper must not be used for collecting
poisonous, flammable or other sub-
stances that are hazardous to health.
Intended use also includes compliance
with the operating, maintenance and
servicing conditions specified by the
manufacturer. The Sweepmaster may
be used, maintained and repaired only
by persons who are familiar with this
work and instructed about the dangers.
The machine corresponds by virtue of
its design and construction as well as in
the version distributed by us to the usu-
al health and safety requirements of the
EC Directives (see Declaration of Con-
formity). This declaration loses its valid-
ity in the event of a modification to the
machine not authorised by us. The
manufacturer does not accept liability
for damage resulting from unauthorised
modifications to the machine.
Introduction

3
Notes on warranty
The terms defined in the purchase
agreement apply. Claims for compen-
sation in relation to damage are exclud-
ed from the terms of the warranty when
the damage is the result of the failure to
observe rules concerning servicing and
maintenance. Maintenance work must
be carried out by an authorised Hako
service workshop and confirmed in the
“Maintenance Report”, which serves as
a warranty logbook.
The following are excluded from the
terms of warranty: Natural wear and
tear through overuse, defective fuses,
improper handling and use and unau-
thorised modifications. Claims under
the terms of the warranty are also an-
nulled when damage occurs to the ma-
chine resulting from the use of parts or
accessories not explicitly approved of
by us or from failure to observe mainte-
nance rules.
Acceptance of the machine
Inspect the machine immediately on de-
livery for signs of transport damage.
You will be compensated if the damage
is immediately confirmed by the haul-
age contractor and the damage report
is sent to our authorised Hako dealer to-
gether with the consignment note.
Disposal
Make the device inoperable. It must not
be a source of danger for playing
children.
Dispose of the device according to local
regulations. For further information on
proper handling and recycling, please
contact the Hako dealer from whom you
purchased the device.
Used batteries with the recycling sym-
bol contain reusable commodities. At
the same time, however, the heavy
metals they contain pose a major threat
to human health and the environment.
Never open or damage batteries. Do
not touch, inhale or swallow the con-
tents of batteries. Health hazard! Do not
allow batteries to enter the environ-
ment. Risk of contamination of soil and
water! In accordance with the symbol
showing the crossed-out garbage bin,
these batteries must not be disposed of
in the domestic waste. Return and recy-
cling of old batteries must be agreed
with the authorised Hako dealer as
required in § 6 and § 8 of the German
Battery Law (BattG).
Introduction

4
Table of contents
Introduction . . . . . . . . . . . . . 2
Foreword . . . . . . . . . . . . . . . . 2
Intended use . . . . . . . . . . . . . 2
Notes on warranty . . . . . . . . . 3
Acceptance of the machine . . 3
Disposal . . . . . . . . . . . . . . . . . 3
1 Safety information . . . . . . . . 6
1.1 Safety and warning
symbols . . . . . . . . . . . . . . . . . 6
1.2 General notes. . . . . . . . . . . . . 7
1.3 Operating instructions . . . . . . 7
1.4 Maintenance instructions . . . . 8
1.5 Special risks . . . . . . . . . . . . . 11
1.6 Environmental protection
instructions . . . . . . . . . . . . . . 11
1.7 Labels on the machine . . . . . 12
2 Operation . . . . . . . . . . . . . . 16
2.1 Instruction. . . . . . . . . . . . . . . 16
2.1.1 General information . . . . . . . 16
2.1.2 Filling fuel . . . . . . . . . . . . . . . 16
2.1.3 Checking the engine oil
level . . . . . . . . . . . . . . . . . . . 17
2.1.4 Putting batteries into
service . . . . . . . . . . . . . . . . . 17
2.1.5 Inserting batteries. . . . . . . . . 18
3 Use. . . . . . . . . . . . . . . . . . . . 19
3.1 Functional description . . . . . 19
3.1.1 Sweeping roller . . . . . . . . . . 19
3.1.2 Side brush . . . . . . . . . . . . . . 19
3.1.3 Filter system / Dust
extraction . . . . . . . . . . . . . . . 20
3.1.4 Shaking system . . . . . . . . . . 20
3.1.5 Steering . . . . . . . . . . . . . . . . 20
3.1.6 Wheels . . . . . . . . . . . . . . . . . 20
3.1.7 Brake . . . . . . . . . . . . . . . . . . 20
3.1.8 Travel drive . . . . . . . . . . . . . 20
3.1.9 Battery systems . . . . . . . . . . 21
3.1.10 Deep discharge indicator . . . 22
3.1.11 Plug connection coding . . . . 23
3.2 Controls . . . . . . . . . . . . . . . . 25
3.3 Control panel
Sweepmaster P900 R . . . . . 27
3.4 Control panel
Sweepmaster B900 R . . . . . 30
3.5 Emptying the dirt hopper . . . 32
3.6 Working . . . . . . . . . . . . . . . . 33
3.6.1 Before starting the engine . . 33
3.6.2 Starting the engine . . . . . . . . 33
3.6.3 Sweeping . . . . . . . . . . . . . . . 34
3.6.4 Stopping and turning off the
engine . . . . . . . . . . . . . . . . . 34
3.6.5 Moving the machine . . . . . . . 34
3.6.6 Switching the electric motor
on and off . . . . . . . . . . . . . . . 35
3.6.7 Sweeping . . . . . . . . . . . . . . . 35
3.6.8 Stopping and parking . . . . . . 35
4 Technical data . . . . . . . . . . 36
5 Maintenance and
servicing . . . . . . . . . . . . . . . 42
5.1 Maintenance instructions . . . 42
5.2 General Sweepmaster
information . . . . . . . . . . . . . . 43
5.2.1 Dismantling and installing
the sweeping roller . . . . . . . . 43
5.2.2 Adjusting the sweeping
level . . . . . . . . . . . . . . . . . . . 43
5.2.3 Sealing strips for the brush
compartment . . . . . . . . . . . . 45
5.2.4 Adjusting the folding apron. . 45
5.2.5 Replacing the side brush . . . 46
5.2.6 Removing the plate filter . . . 47
5.2.7 Basic cleaning of the plate
filter . . . . . . . . . . . . . . . . . . . 48
5.3 Sweepmaster P900 R . . . . . 49
5.3.1 Engine . . . . . . . . . . . . . . . . . 49

5
Table of contents
5.3.2 Checking the engine oil
level . . . . . . . . . . . . . . . . . . . 49
5.3.3 Air filter . . . . . . . . . . . . . . . . . 50
5.3.4 Hydraulic system . . . . . . . . . 51
5.3.5 V-belt drive . . . . . . . . . . . . . . 53
5.3.6 Electrical system . . . . . . . . . 56
5.3.7 Maintenance plan . . . . . . . . . 57
5.4 Sweepmaster B900 R . . . . . 58
5.4.1 Electrical system . . . . . . . . . 58
5.4.2 Brake . . . . . . . . . . . . . . . . . . 58
5.4.3 V-belt drive . . . . . . . . . . . . . . 59
5.4.4 Maintenance plan . . . . . . . . . 61
EC Declaration of
Conformity . . . . . . . . . . . . . 63

6
Safety information
1 Safety information
1.1 Safety and warning symbols
All places concerning your safety, the
safety of the device and of the environ-
ment are provided with these warning
symbols in the operating manual.
Symbol Damage for ... Definition
Safety instructions persons or property Safety instructions for avoiding dangerous situations
due to inaccurate or omitted compliance with instruc-
tions or specified work sequences.
Note the machine Important notes for handling the device for maintain-
ing its suitability for use.
Environmental danger the environment Environmental danger due to the use of substances
from which a health and environmental risk proceeds.

7
Safety information
1.2 General notes
• Apart from the instructions in this op-
erating manual, the general safety
and accident prevention regulations
of the legislation must be taken into
account.
• Before the machine is put into ser-
vice, please read carefully the oper-
ating manual you receive as well as
further separate instructions for (ad-
ditional) attachments and observe
them in all aspects in your work.
• The machine may be used, main-
tained and repaired only by persons
who have been instructed by Hako
experts.
• This device may not be used by per-
sons (including children) with re-
duced physical or mental abilities or
by persons without sufficient experi-
ence and skills.
• You should pay special attention to
the safety instructions. For errors in
operating the machine can be avoid-
ed and trouble-free operation can be
guaranteed only with precise factual
knowledge.
• The operating manual must be avail-
able constantly at the place of use of
the machine and should therefore be
kept carefully on the device.
• Please hand over these documents
to the new owner/operator on sale or
rental of the device. Have the hand-
over confirmed!
• The labels attached to the machine
provide important information for
safe operation. Renew labels that
are no longer legible or present.
• Spare parts must correspond to the
original parts with regard to safety.
1.3 Operating instructions
• Check the machine for operating
safety before every start-up!
Remove faults immediately!
• Before starting work, the operator
must familiarize himself with all
equipment, operating and actuating
elements as well as with their func-
tion. It is too late to do this during
operation!
• Sturdy and slip-proof shoes must be
worn when working with the
machine.
• Only those surfaces approved by the
contractor or its authorised repre-
sentative for use of the device may
be driven on.
• When working with the machine, pay
special attention to third persons,
especially children.
• The machine is not suitable for re-
moving liquids, dusts or materials
that are dangerous, combustible or
explosive.
• This machine must not be used as a
dust-eliminating machine with a dust
filter insert (separator) for eliminating
dusts that are hazardous to health.
• The machine must not be used in po-
tentially explosive atmospheres.
• To prevent unauthorised use of the
machine, remove the key.
• Check the machine and its work
equipment for correct condition and
operating safety before use. The ma-
chine must not be used if it is not in
order.
• Before start-up, adjust the driver's
seat so that the roadway and the rear
work area are completely visible.
• For reasons of safety, the driver's
seat is equipped with a seat contact
switch. The machine can only be
started when the driver is sitting on
the driver's seat. The function of the
seat contact switch must not be
bypassed.
• The seat contact switch is monitored

8
Safety information
electronically. Any manipulation can
lead to automatic locking of the
machine.
• Before turning the machine on,
always switch off all drives.
• The machine may be started, put
into motion and stopped only from
the driver's seat.
• Ensure that there is sufficient ventila-
tion (dust and exhaust gases) when
performing sweeping tasks in en-
closed rooms.
Risk of intoxication!
• The vehicle speed must always be
adapted to the surrounding condi-
tions and the load condition.
Three-wheeled vehicles have lower
driving stability than four-wheeled
vehicles, therefore:
Sudden steering movements at high
speed or too high speeds when turn-
ing can cause the vehicle to tilt over.
Turn the machine only on level sur-
faces, never on slopes.
Drive up and down slopes in a
straight line.
Avoid sudden turns when driving
uphill or downhill or across slopes.
There is a risk of tilting over in an
inclined position!
• Do not use the machine on surfaces
with a slope that exceeds the slope
indicated on the machine.
• Never exceed the permissible total
weight and the permissible axle
loads. Monitor the filling level of the
dirt hopper at regular intervals.
• Only shake the filter when the dirt
hopper is in the closed position.
• Do not exceed the maximum load of
the hopper!
• With a creeping machine, check the
zero point position of the accelerator
pedals.
• When driving on a slope, use the
brake to slow down the machine; in
an emergency, switch off the ma-
chine with the key.
Sweepmaster P900 R
• Do not let the engine run in enclosed
spaces! Risk of intoxication!
• Pay attention to hot parts, e.g. cool-
ing water, exhaust manifold, etc.
• If there is a noticeable smell of ex-
haust gas, stop the engine immedi-
ately and determine the cause.
Check the exhaust system at regular
intervals.
1.4 Maintenance instructions
• Daily and weekly maintenance work
must be done by the operating staff.
In all other maintenance work,
please contact your nearest Hako
service centre.
• The maintenance work and mainte-
nance intervals specified in the oper-
ating manual must be complied with.
• Pay attention to rotating parts when
undertaking cleaning and mainte-
nance work. There is a risk of
crushing!
• Use suitable tools for the cleaning
and maintenance work.
• Have the machine checked for safe
condition by an expert in accordance
with the accident prevention regula-
tions at appropriate intervals (we
recommend at least once a year).
• Spare parts must at least comply
with the technical requirements
specified by the manufacturer. This
is guaranteed by original spare
parts.
• Only use sweeping rollers and side
brushes approved by the manufac-
turer (see Technical data). The use
of other sweeping rollers and side
brushes may compromise safety.

9
Safety information
• Turn the machine off for cleaning
and maintaining the machine as well
as before replacing parts.
Remove the key.
• The dirt hopper must be cleaned at
regular intervals to prevent the accu-
mulation of bacteria.
• The machine is protected against
spray water (IPX3).
Cleaning the machine with a high-
pressure cleaner or steam jet is not
allowed.
• If the Sweepmaster is jacked up with
a jack, it must be additionally sup-
ported appropriately.
• There must be no persons on a
jacked up or raised Sweepmaster.
• When changing wheels, use wheel
chocks to additionally secure the ve-
hicle against rolling away. If possi-
ble, always change wheels on firm
and level ground.
• Do not remove or mount tyres or re-
pair them on a rim. When working on
the tyres and the rim, always go to an
authorised workshop that employs
specifically trained personnel and
has special safety tools. Never undo
the bolts of two-piece rims while the
wheel is mounted on the vehicle and
there is air in the tyres. Risk of seri-
ous injury!
• Do not perform any welding, drilling,
sawing or grinding work on parts of
the frame. Damaged parts may be
replaced only by an authorised Hako
workshop.
• Use only original fuses. If stronger
fuses are used, the electrical system
can be destroyed and there can be
fires.
• Always disconnect the minus pole of
the battery when working on the
electrical system.
• Never leave batteries discharged,
always recharge them as quickly as
possible.
• Only refill distilled water.
Never top up battery acid when the
cells are in perfect condition.
• To avoid leakage currents, always
keep the battery clean and dry and
protect it from contamination such as
metal dust.
• Battery acid is highly corrosive (keep
away from children).
Wear safety goggles when checking
the acid level. In case of acid splash-
es into the eye, rinse with water for
approx. 15 minutes and consult a
doctor immediately.
When handling the battery, use suit-
able protective means (e.g. protec-
tive gloves, protective finger guards).
Do not use naked flames (risk of
explosion).
• There is a risk of crushing and shear-
ing when installing, removing and
replacing the battery.
• Fluids (fuel, hydraulic oil) escaping
under high pressure can penetrate
the skin and cause severe injuries. If
coming into contact, consult a doctor
immediately to prevent infections.
Caution when draining hot oil – risk
of burns.
• Thoroughly check the brake systems
at regular intervals! Adjustment and
repair work at the brake system must
only be carried out by authorised
Hako workshops or approved brake
services.
• Thoroughly check the hydraulic sys-
tems at regular intervals. Adjustment
and repair work at the hydraulic sys-
tem must only be carried out by au-
thorised Hako workshops.
• Check hydraulic lines and hoses for
damage and leaks at regular inter-
vals. Replace damaged lines and
hoses immediately.

10
Safety information
Sweepmaster P900 R
• Let the engine cool down before un-
dertaking cleaning and maintenance
work. There is a risk of burns at hot
surfaces!
• Only use air and oil filters approved
by the manufacturer (see Technical
data). The use of other filters may
compromise safety.
• When transporting the machine, turn
off the engine.
• Check the exhaust system at regular
intervals.

11
Safety information
1.5 Special risks
Protective devices
• Never operate the Sweepmaster
without effective protective devices
(this also includes locking of the side
door)!
Refuelling (Sweepmaster P900 R)
• Extreme caution is required when
handling fuel – high risk of fire! Never
refuel close to naked flames or ignit-
able sparks! Do not smoke during
fuelling! Turn off the engine, remove
the key and apply the parking brake
before refuelling. Never refuel in en-
closed spaces! Wipe away any spilt
fuel immediately.
Electrical system
• Only use original fuses with the
specified current.
• In the event of malfunctions in the
electrical system, switch off the ma-
chine immediately and rectify the
malfunction.
• Work on the electrical system may
be done only in accordance with
electrical engineering standards by a
specialist trained for this work.
• Regularly inspect/check the electri-
cal equipment of the machine. De-
fects such as loose connections or
damaged cables must be removed
immediately.
• Observe the operating manuals pro-
vided by the battery manufacturer.
• Do not place metal objects or tools
on batteries – risk of short circuit!
• Ensure that sufficient ventilation is
provided in the charging area when
charging the batteries – risk of
explosion!
Open the seat hood during the
charging process.
1.6 Environmental protection
instructions
• Adequate knowledge is required for
the safe handling of substances
which could represent a risk to
health and the environment.
• Observe the applicable laws and
local regulations when disposing of
detergents, see the Federal Water
Act (WHG).
• Used batteries with the recycling
symbol contain reusable commodi-
ties. In accordance with the symbol
showing the crossed-out garbage
bin, these batteries must not be dis-
posed of in the domestic waste.
Return and recycling of old batteries
must be agreed with the authorised
Hako dealer as required in § 6 and
§ 8 of the German Battery Law
(BattG).

12
Safety information
1.7 Labels on the machine
The following safety and instruction la-
bels are affixed well legibly to the vehi-
cle. Renew missing or illegible labels
immediately.
Company logo (Fig. 1/1) front and rear
Parking brake (Fig. 1/2)
Folding apron (Fig. 1/3)
Read and observe the operating
manual (Fig. 1/4)
Brake (Fig. 1/5)
Sound power / Slope (Fig. 1/6)
Sweepmaster P900 R Sweepmaster B900 R

13
Safety information
Fig. 1
2
1
3
5
6
4

14
Safety information
Rotating parts
(Fig. 2/1)
Sweeping roller wear compensation
(Fig. 2/2)
Type plate (Fig. 2/3)
Machine type (Fig. 2/4)
High-pressure cleaner (Fig. 2/5)
Battery setting (Fig. 2/6)
24V sticker (Fig. 2/7)
Battery charging (Fig. 2/8)
Sweepmaster P900 R
Hydraulic oil (Fig. 2/9)
Hot surface (Fig. 2/10)
6 bar (Fig. 2/11)
Sweepmaster P900 R
Sweepmaster B900 R
24V
6 bar

15
Safety information
Fig. 2
110
3
4
2
5
6
7
1
9
2
3
4
5
8
11 11
11

16
Operation
2Operation
2.1 Instruction
Instruction is required before the first
start-up. The first-time instruction of the
machine must be provided only by a
specialist of your authorised Hako deal-
er. This person will be notified immedi-
ately after delivery of the machine from
the factory and will contact you to make
an instruction appointment.
2.1.1 General information
Smoking or handling with fire is
not allowed when filling fuel
tanks and working on or in the
vicinity of components that
contain fuel.
Only fill fuel tanks when the
engine is turned off.
Sweepmaster P900 R
Do not use Sweepmaster P900 R
at ambient temperatures above
40 °C. Do not start it at tempera-
tures < - 5 °C.
2.1.2 Filling fuel
The fuel tank (Fig. 3/1) is located be-
neath the folding seat hood.
Only use clean fuel. Only store
fuel in approved and sealed
containers
- Allow the engine to cool down.
- Fold up the seat hood.
- Make sure the area around the tank
cap (Fig. 3/2) is clean!
- Remove the tank cap and check the
fuel quantity.
- Fill the tank with standard unleaded
petrol. Avoid overfilling!
Fig. 3
1
2

17
Operation
2.1.3 Checking the engine oil level
- Engine oil has been filled in the
factory.
- However, as a precautionary meas-
ure, check the oil level (see section
“5.3.2 Checking the engine oil level”
ff.).
- A low oil level causes the engine to
shut off in order to prevent engine
damage.
If oil needs to be topped up,
only use clean oil.
Do not use old oil that has
been used before!
Only store oil in approved and
sealed containers.
Sweepmaster B900 R
2.1.4 Putting batteries into service
To achieve optimum performance and a
maximum service life, batteries must be
charged appropriately with commis-
sioning charge after filling.
Correct handling and functioning of bat-
tery chargers are described in detail in
the instructions supplied with each
charger.
Since the batteries and the
charger must be compatible,
only use the batteries and the
chargers specified by us.
We shall only grant a full war-
ranty if these units are used.
For further information on putting bat-
teries into service and battery mainte-
nance and servicing, refer to leaflet
88-60-2556 “Information on drive
batteries”.
Do not use Sweepmaster B900 R
at ambient temperatures above
40 ° C.
Do not start it at temperatures
< 0 °C.

18
Operation
2.1.5 Inserting batteries
- Turn off the engine and remove the
key.
- Hold the machine with the parking
brake.
- Fold up the seat hood.
- Insert batteries into the battery tray as
shown in the illustration:
Fig. 4 Inserting batteries
Fig. 5 6 V/175 Ah, PzS
6 V/180 Ah, GiV,
maintenance free
- Connect batteries to the wiring har-
ness according to the circuit diagram.
- Connect the charging plug of the bat-
tery connecting cable to the charging
cable and charge the batteries appro-
priately with commissioning charge.
- After charging the batteries, connect
the charging plug to the connector
plug.
The electrical connection is estab-
lished and Sweepmaster B900 R is
ready for use.

19
Use
3Use
3.1 Functional description
Fig. 6
The side brushes are used to collect dirt
at borders and to enlarge the working
width as well as to increase the area
performance on large surfaces.
The sweeping roller transports the dirt
into the dirt hopper. The absorbed fine
dust is sucked in by the suction fan and
separated by the filter system. The air
returned to the environment is always
clean.
This sweeper operates dust
free.
3.1.1 Sweeping roller
The sweeping roller is equipped with 6
rows of bristles arranged in a V shape.
The sweeping roller is 700 mm wide
and measures 345 mm in diameter.
3.1.2 Side brush
The side brush is located at the front
right of the machine (standard version).
The operator lifts and lowers it with a
hand lever.
The side brush must be slightly inclined
to the side.
The swinging range of the side brush
arm is limited by move stop screws.
The side brush is driven by a V-belt.
A second side brush can be fitted on the
left-hand side for special applications.

20
Use
3.1.3 Filter system / Dust extraction
The filter system is located in the filter
case above the dirt hopper. The suction
fan transports the fine dust swirled up
by the sweeping roller to the plate filter
where it is separated. The fine dust set-
tles on the outer surfaces of the filter
blades.
In case of excessive quantities
of dust, check and clean the
plate filter at regular intervals.
3.1.4 Shaking system
The dust deposited on the plate filter is
partly shaken off by the vibrations when
working and falls into the dirt hopper.
In order to work absolutely dust free,
however, actuate the shaking system at
regular intervals.
3.1.5 Steering
Steerage is effectuated mechanically
from the steering wheel to the front
wheel by a fork head.
3.1.6 Wheels
Sweepmaster B900 R
Front wheel: solid tyres
Rear wheels: solid tyres
Sweepmaster P900 R
Front wheel: pneumatic tyres 4.00-4
Rear wheels: pneumatic tyres 4.00-4
Special tyres: solid tyres
3 wheels with rim
3.1.7 Brake
The Sweepmaster is equipped with a
service brake. The service brake has
been designed as a shoe brake and
also serves as the parking brake. It is lo-
cated in the rear wheels and is operated
by pull cables.
To adjust the brake, there is an adjust-
ing bolt on the right rear wheel.
Work on the brake system
must only be carried out by a
specialist workshop.
3.1.8 Travel drive
The Sweepmaster P900 R is equipped
with a hydrostatic travel drive that is
driven by the combustion engine via a
pump.
The Sweepmaster B900 R is equipped
with an infinitely variable electrical
travel drive.