Minuteman Mirage M220021K17 Guide

Mirage®
Propane
Burnisher
OPERATION SERVICE PARTS CARE
M220024KA
M220028KA
M220021N14
M220024N20
M220028N20
Revised 11/98
Model:
M220021K17
M220021K17C
M220024K17
M220024K17C
M220028K17
M220028K17C

TABLE OF CONTENTS
Page
1 Unpacking Instructions, User Tips
2 - 4 General Warning Information
5 - 6 Engine Set-Up
7 Operation
8 - 10 General Maintenance Information
11 - 12 Trouble Shooting
13 - 23 Engine Specifications
24 Warranty Information
Back Cover Warranty

1
•Always check fuel system for leaks with soapy water.
(Hoses, regulators, connections)
•Never smoke while operating or working on propane buffer.
•Do not attempt to change a pad while buffer engine is
running.
•Keep hands, feet, hair, clothing, etc. away from buffing
pad, pulleys, and any other moving parts on equipment.
•If you smell gas, do not touch any electric switch,
extinguish any open flame and contact your gas supplier,
and open windows.
•If there is any smell of propane fuel, check immediately
for leaks.
•Do not store any other flammable liquids or vapors in the
vicinity of propane storage area, machine storage area or
any other appliance.
•Do not place flammable objects such as matches, fuel,
etc., close to the engine while it is running.
•Never attempt to repair a propane fuel tank by yourself.
Tanks can only be repaired by a Department of
Transportation authorized facility.
•For repairs or adjustments on your Propane Buffer use
only an authorized Minuteman Service Center.
Visible escaping gas vapor is extremely
cold (ICE). Degrees (-44) avoid contact.
Propane gas is heavier than air. The gas
will settle to the lowest possible area and build upwards.
Build-up of propane vapor in any enclosed
area, can cause an explosion if ignited. Operate only in
well-ventilated areas.
CAUTION
!
CAUTION
!
USER TIPS
•Allow only qualified and trained personnel to operate a
Minuteman Propane Buffer.
•Always maintain your Minuteman Propane Buffer, follow
operating and maintenance instructions.
•Always check oil level before starting.
•Always keep accurate records of maintenance and service
in a maintenance log book.
•Never overfill a propane fuel tank. Be sure to follow safety
instructions for venting overfilled tanks in safety section
in this manual.
•Never leave machine unattended with engine running.
•Never change or alter fuel system unless authorized by
Minuteman International Inc. Service Department.
•Always keep nuts and bolts tightened and hose
connection snug.
•Always clean recoil dust filters after 1 hour of use, and
keep propane buffer clean.
•Always store propane tank outside in an approved,
secured, and tamper proof enclosure to provide safety
from vandalism and accidents.
•Never use a non-UL listed fuel tank on your propane buffer.
•Always operate your propane buffer, with exhaust (muffler)
pointed away from merchandise, furniture, etc. Heat from
exhaust may cause damage.
•Never use a spray buff product over top of the engine.
This could cause damage to engine if product got into
cooling system.
•For all engine repairs refer to the engine manual included
with this parts and instruction book.
•Engine will not start if rego coupling is crossed, (fuel line
connection) make sure fuel line connection is properly
done.
CAUTION
!
INSPECTION
Carefully unpack and inspect your Burnisher for shipping damage. Each unit is tested and thoroughly inspected before
shipment and any damage is the responsibility of the delivering carrier who should be notified immediately.
ENGINES
Engines are shipped with oil & coolant. Refer to engine manual for correct weight and quantity. Briggs V-twin 16 hp,
Briggs 14 hp single cylinder, Kawasaki. Before starting engine check all levels. Do not overfill.
PROPANE TANK
The tank supplied with this equipment is a vertical vapor withdrawal 20 lb. tank. Do not overfill. Fill tank to 80% of rated
capacity. Safety fill, Aluminum unpolished, polished, and steel. All propane tanks are equipped with this special warning
sticker. Please read.
UNPACKING INFORMATION
WARNING: Vapor withdrawal tank weight fill only! Failure to weight fill tank will void
warranty and cause damage to propane components! Tare weight is stamped
on the tank.

2
SAFETY PRECAUTIONS
FUEL SYSTEM
•DO NOT fill fuel tanks while engine is running.
•DO NOT smoke or use an open flame in the vicinity of
the engine or fuel tank. Internal combustion engine fuels
are highly flammable.
•Fuel line must be LP approved, adequately secured, and
free from leaks. Piping at the engine should be approved
flexible line. Do not use copper piping for flexible lines as
copper will work harder and become brittle enough to
break.
•Be sure all fuel supplies have a positive shut-off valve.
PROTECT AGAINST MOVING PARTS
•Do not wear loose clothing in the vicinity of moving parts,
such as PTO shafts, flywheels, blowers, couplings, fans
belts, etc.
•Keep your hands away from moving parts.
EXHAUST SYSTEM
•Exhaust products of any internal combustion engine are
toxic and can cause injury, or death if inhaled. When
operating the engine in a confined area, make sure the
ventilation system is operating properly.
•DO NOT use exhaust gases to heat a compartment.
•Make sure that your exhaust system is free of leaks.
Make sure that exhaust manifolds are secure and are
not warped by bolts unevenly torqued.
EXHAUST GAS IS DEADLY!
Exhaust gases contain carbon monoxide, a poisonous gas
that can cause unconsciousness and death. It is an
odorless and colorless gas formed during combustion of
hydrocarbon fuels. Symptoms of carbon monoxide
poisoning are:
Before operating the engine, read the Operator’s Manual
and become familiar with it and the equipment. Safe and
efficient operation can be achieved only if the equipment is
properly operated and maintained.
The following symbols, found throughout this manual, alert
you to potentially dangerous conditions to the operator,
service personnel, or the equipment.
This symbol warns of immediate
hazards that will result in severe personal injury or
death.
This symbol refers to a hazard or unsafe
practice that can result in severe personal injury or
death.
This symbol refers to a hazard or unsafe
practice that can result in personal injury or product or
property damage.
Fuels, electrical equipment, batteries, exhaust gases and
moving parts present potential hazards that can result in
severe personal injury. Take care in following these
recommended procedures. All local, state and federal codes
should be consulted and complied with.
GENERAL
•Provide appropriate fire extinguishers and install in
convenient locations. Use an extinguisher rated ABC by
NFPA.
•Make sure that all fasteners on the engine are secure
and accurately torqued. Keep guards in position over fans,
driving belts, etc.
•If it is necessary to make adjustments while the engine
is running, use extreme caution when close to hot
exhausts, moving parts, etc.
•Used engine oils have been identified by some state or
federal agencies as causing cancer or reproductive
toxicity. When checking or changing engine oil, take care
not to ingest, breathe the fumes, or contact used oil.
•Do not work on this equipment when mentally or
physically fatigued, or after consuming any alcohol or
drug that makes the operation of equipment unsafe.
BATTERIES
•Before starting work on the engine, disconnect batteries
to prevent inadvertent starting of the engine.
•DO NOT SMOKE while servicing batteries. Lead acid
batteries give off a highly explosive hydrogen gas which
can be ignited by flame, electrical arcing or by smoking.
•Verify battery polarity before connecting battery cables.
Connect negative cable last.
CAUTION
!
WARNING
!
DANGER
!
•Dizziness
•Headache
•Weakness and Sleepiness
•Throbbing in Temples
•Vomiting
•Muscular Twitching
If you experience any of these symptoms, get out into fresh
air immediately, shut down the unit and do not use it until it
has been inspected.
The best protection against carbon monoxide inhalation is
proper installation and regular, frequent inspections of the
complete exhaust system. If you notice a change in the
sound or appearance of exhaust system, shut the unit down
immediately and have it inspected and repaired at once by
a competent mechanic.
KEEP THE UNIT AND SURROUNDING AREA CLEAN
•Make sure that oily rags are not left on or near the engine.
•Remove all unnecessary grease and oil from the unit.
Accumulated grease and oil can cause overheating and
subsequent engine damage and present a potential fire
hazard.

3
SAFETY INFORMATION
Accidental Starts!
Before servicing the engine or
equipment, always disconnect
the spark plug lead to prevent
the engine from starting accidently.
Ground the lead to prevent sparks that
could cause fires.
On engines equipped with a 12-volt
battery and/or electric start, disconnect
the battery cables from the battery.
Always disconnect the negative (-) cable
first.
Before disconnecting the negative (-)
ground cable, make sure all switches
are OFF. If ON, a spark will occur at the
ground cable terminal which could
cause an explosion if hydrogen gas or
fuel vapors are present.
WARNING: Over-speed is
Hazardous!
Never tamper with the govenor
components or settings to increase the
maximum speed. Severe personal injury
and damage to the engine or equipment
can result if operated at speed above
maximum ratings.
Explosive Fuel
LPG is extremely flammable and is
heavier than air and tends to settle in
low areas where a spark or flame could
ignite the gas. Do not start or operate
this engine in a poorly ventilated area
where leaking gas could accumulate
and endanger the safety of persons in
the area.
To insure personal safety, installation
and repair of LPG fuel supply systems
must be performed only by qualified LPG
system technicians. Improperly installed
and maintained LPG equipment could
cause fuel supply system or other
components to malfunction, causing gas
leaks.
Observe federal, state and local laws
governing LPG fuel and systems.
CAUTION: High Voltage!
Never touch electrical wires or
components while the engine is running.
They can be sources of electrical shock
which could cause severe injury or
burns.
!
Dangerous Acid, Explosive Gases!
Batteries contain sulfuric acid. To prevent
acid burns, avoid contact with skin, eyes
and clothing. Batteries produce
explosive hydrogen gas while being
charged. To prevent a fire or explosion,
charge batteries only in well ventilated
areas. Keep sparks, open flames, and
other sources of ignition away from the
battery at all times. Keep batteries out
of the reach of children. Remove all
jewelry when servicing batteries.
Before disconnecting the negative (-)
ground cable, make sure all switches
are OFF. If ON, a spark will occur at the
ground cable terminal which could
cause an explosion if hydrogen gas or
gasoline vapors are present.
For Your Safety!
These safety precautions should be followed at all times. Failure to follow these safety precautions could result in
injury to yourself and others.
!

4
Lethal Exhaust Gases!
Engine exhaust gases contain
poisonous carbon monoxide. Carbon
monoxide is odorless, colorless, and
can cause death if inhaled. Avoid
inhaling exhaust fumes, and never run
the engine in a closed building or
confined area.
Rotating Parts!
Keep hands, feet, hair, and clothing
away from all moving parts to prevent
injury. Never operate the engine with
covers, shrouds, or guards removed.
Hot Parts!
The crankcase, cylinder head, exhaust
system, and other components can
get extremely hot from operation. To
prevent severe burns, do not touch
these areas while the engine is running
- or immediately after it is turned off.
Never operate the engine with heat
shields or guards removed.
SAFETY INFORMATION CONTINUED

5
ENGINE SET-UP
Refer to Engine Owners Manual for the crankcase oil
capacity.
Single-grade oil is preferable when temperatures are
consistently -over 30°F (0°C). Multigrade oils are best when
wide temperature variations are anticipated.
Crankcase pressure can blow out hot
oil, that can cause severe personal injury. Do not check
the oil level while the engine is running.
Excess oil can cause high oil
consumption, high operating temperatures, and oil
foaming. Do not overfill the crankcase.
WARNING
!
CAUTION
!
PRE-START CHECKS
Inspect the engine visually. Check for loose or missing parts
and any damage that may have occurred in shipment.
Starting the engine without oil will
result in severe engine damage. Add oil prior to starting
the engine.
CRANKCASE OIL RECOMMENDATIONS
Use premium quality motor oil with the API (American
Petroleum Institute) designation SG on the container. Figure
1 shows the recommended oil weight for the temperature
range that the engine will be operated in. Make sure the
engine oil weight is correct for the expected temperature
range.
CAUTION
!
TABLE 1 FIGURE 1

6
PROPANE BURNISHER SET-UP
STARTING AND OPERATION PROCEDURE
CAUTION: NEVER ALLOW MACHINE TO RUN FOR MORE THAN
10 SECONDS IN ONE SPOT OR DAMAGE WILL OCCUR TO
THE FLOOR!
1. Check oil and fuel levels. Make sure oil and propane tank
is not overfilled.
2. Check and clean recoil dust filter and carburetor filter.
Make sure air filter is free of dust and debris. Never run
buffer for more than 1 hour without cleaning air filter.
Change filters when necessary.
3. Check pad and pad assembly, to make sure pad is
centered and clean, and look for any problems with pad
driver. To do this turn machine over on its right side.
4. Check belt tension, again turn machine over on its right
side and squeeze belt together. Belt should depress
between 1/4 and 1/2 inch. To change see maintenance
instructions. (Page 13)
5. Open propane service valve, turn counter-clockwise to
open.
6. Tilt machine backward with pad off the floor, move throttle
to SLOW/IDLE position. Never start machine with pad on
the floor.
7. With Battery start machine, turn the key-switch to the start
position for approximately 5 seconds. If machine fails to
start, return ignition switch to the run position, do not turn
off. Allow approximately 30 seconds between tries, never
engage starter more than 10 seconds at a time.
a. Never start buffer with pad on the floor, this will
cause the starter to burn out prematurely!
b. Never use starting fluids or any other forms of
flammable substance to assist the engine in
starting!
8. Allow engine to warm up and run at normal operating
speed before engaging pad with floor. Make sure pad is
off the floor before engaging the clutch. Once machine is
at normal operating speed and clutch is engaged, start
walking and slowly lower the machine to the floor and
begin burnishing the floor. NOTE: Catalytic mufflers work
more efficiently when they are hot, emissions may be
higher when muffler is cold. Direct drive machines have
no clutch. Pad is moving when engine starts. Once
engine starts you are ready to burnish.
9. Machines with mechanical clutches: NOTE: Never engage
clutch with pad on floor. Once machine has reached
normal operating speed clutch is engaged automatically
at 2400 engine RPM and start burnishing. Start burnishing
when pad has reached top speed.
10. Always burnish on the right hand, so exhaust fumes are
blown to the inside of the aisle. Be careful exhaust fumes
and muffler are extremely hot and will damage
merchandise. NOTE: Do not expose skin to muffler or
manifold - extreme heat, will burn.
11. For normal stops of the machine, turn propane service
valve clockwise, to starve the engine of its fuel. Do not
stop machine by using the throttle or ignition key, you can
trap fuel in the lines, which can cause a backfire and cause
damage to the engine. NOTE: In case of emergency
always turn ignition key off. NOTE: Machines without
clutch, the pad starts to rotate immediately when engine
starts. Pad stops rotating when engine is off! No clutch!
CHECK OIL
Refer to engine manual for the type of oil, and instructions for
checking oil. It is important to note engine manufacturers differ
in the way oil is checked. Add oil if needed. Refer to Page 12.
HANDLE ADJUSTMENT
Adjust handle by loosening wing nuts on each side of handle.
Rotate handle to desired position and reinstall wing nuts.
PROPANE TANK INSTALLATION
Buffer is supplied with 20 lb., 5 gallon capacity D.O.T. and U.L.
listed tank. DO NOT OVERFILL. Overfilling will cause regulator
to freeze. This could cause damage to your equipment. Hold
tank in place by clamping the toggle assembly to the tank
band around the tank. Adjustments to the toggle assembly are
made by screwing toggle in or out on the toggle clamp. Connect
fuel hose to the tank valve by turning coupling to the right
(clockwise). Hand tighten only, making sure not to cross thread
the coupling.
REMOVING TANK
To loosen turn coupling to the left (counter clockwise). Undo
the tank strap, remove tank and store in approved area. Do not
store tank with machine in the janitor’s closet.
CONNECTING THE BATTERY (for battery start machines only)
Connect the RED positive cable first, then connect the black
negative cable last.
INSTALLATION/CHANGING PAD
1. With engine off, turn the machine over on the operator’s
RIGHT side (starter side) for the Briggs & Stratton models.
This can be easily done by pushing down on the right side
of the handle with some force while the machine is tilted
back.
2. Remove the center cup retainer and carefully pull old pad
off the pad driver assembly.
3. Inspect the pad holder for cracks or damage. Replace if
necessary. NOTE: A DAMAGED PAD HOLDER ROTATING
AT HIGH SPEEDS MAY BE AN EXTREME HAZARD IF IT
SHOULD COME APART.
4. Pull center from new pad, enter pad on pad holder and
secure with center cup retainer.
5. Press pad on to the pad driver assembly making sure
pad fits inside the lip of the pad driver assembly, to prevent
pad from elongating, attach center cup retainer.
6. Return machine to the upright position.
TRANSPORTATION
When transporting a propane powered floor machine with the
fuel cylinder attached, the cylinder should be securely fastened
with service valve closed and coupling not attached. The
machine should be secured to the vehicle to avoid movement.
Tanks separate from the machine should be secured to avoid
movement. NEVER STORE MACHINES WITH TANKS IN AN
ENCLOSED VAN OR TRAILER. ALWAYS CHECK TANKS FOR
OVERFILL BEFORE TRANSPORTATION.

7
OPERATION INFORMATION
Engine break-in as a result of proper care during the first
hours of operation of a new or rebuilt engine results in the
ideal fitting of all internal moving metal parts, which is
essential for top engine performance. For controlled engine
break-in.
1. Operate the equipment as it is intended to be operated.
However, for the first 3 hours, if possible, operate the
equipment at about half the available engine power,
occasionally operating at full engine power for brief
periods. Also, if possible, avoid prolonged low-speed,
low-power operation during engine break-in.
2. Proper engine oil is especially critical during break-in
because of the higher engine temperatures that can be
expected. See RECOMMENDED ENGINE OIL.
Change the oil if it is not appropriate for the ambient
temperatures during the break-in periods. See Table 1,
Figure 1 Page 6.
3. Check the oil level twice a day or after every 4 hours of
operation during the first 24 hours of operation.
4. Change the oil and oil filter after the first 5 hours of
operation.
OPERATION IN DUSTY CONDITIONS
1. Keep the engine cooling fins and flywheel air inlet screen
and precleaner (filter) clean.
2. Perform air cleaner maintenance more often than
normal - as required.
3. Change the engine oil and oil filter more often than
normal. See Table 2, Page 10.
OPERATION IN HOT WEATHER
Pay particular attention to the following items when
operating the engine in temperatures above 100°F (38°C):
1. Keep the engine cooling fins and flywheel air inlet screen
and precleaner (filter) clean: See to it that nothing
obstructs air flow to and from the engine.
2. Check the oil level more frequently.
3. Change the oil and oil filter more often than normal.
See Table 2, Page 10.
4. Make sure the engine oil viscosity is appropriate for
the ambient temperature and change the oil if
necessary. See Table 1, Figure 1 page 6.
OPERATION IN COLD WEATHER
Pay particular attention to the following items when
operating the engine in temperatures below freezing.
Make sure the engine oil viscosity is appropriate for the
ambient temperatures and change the oil if necessary. See
Table 1. If the temperature drops before you have the chance
to change the oil, warm up the engine by moving the
equipment into a heated space before attempting to start
the engine or change oil.
After engine has reached operating temperature while pad
is still off the floor. Before lowering burnishing head, adjust
throttle to operating speed. After slowly lowering machine
to floor, place hands lightly on the handle and allow the
machine to create the floor pressure. Bearing down and
pushing hard will lead to premature belt problems and
operator fatigue. For smoother turns and greater
maneuverability, buff aisles from the right side first.
CAUTION: DO NOT RUN MACHINE FOR MORE THAN 15
SECONDS IN ONE SPOT OR BURNING WILL OCCUR.
IDLING AND STOPPING THE MACHINE
If for any reason the machine needs to be idled for short
periods, simply tilt machine back on its rear caster and
shift throttle back (toward operator) into Idle Position.
Machine will now idle safely. (CAUTION: DO NOT IDLE
BUFFER ON REAR CASTER FOR MORE THAN TWO
MINUTES. This will raise the emissions level.)
To stop machine tilt back on rear caster, turn valve on
propane tank off, and allow fuel in the lines to be used up.
FOR EMERGENCY SHUT OFF ONLY. Battery start models:
turn off ignition switch. Electric start models: use emergency
stop switch on right side of control panel.
STORAGE
Only authorized and properly trained personnel should have
access to propane tanks and machine.
Making sure tank valve is closed, remove tank from buffer.
Local Fire Codes may require storing tank in separate
location. We recommend this, as well as following
Local Fire Codes.
Store machine and tank away from objects that may fall
and damage them.
Never store tank or buffer near open flame or heat producing
devices.
Make sure machine is cleaned properly before stored.
To prevent damage pad holder, the pad SHOULD remain on
machine during storage.
EMERGENCY STOP
Turn ignition key to OFF position.
Units with emission control device and clutch. Release bail
on handle to activate kill switch. (Model M220028KA).
IGNITION SWITCH
Battery models only. Do not cold crank for more than 10
seconds.
ENGINE BREAK-IN