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, if applicable. Refer to engine manual for correct weight and quantity. Briggs Vtwin 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.
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.
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.
• 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 and shut off tank at valve.
• 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.
!
CAUTION
cold (ICE). Degrees (-44) avoid contact.
!
CAUTION
will settle to the lowest possible area and build upwards.
!
CAUTION
area, can cause an explosion if ignited. Operate only in
well-ventilated areas.
Visible escaping gas vapor is extremely
Propane gas is heavier than air. The gas
Build-up of propane vapor in any enclosed
1
Page 5
SAFETY PRECAUTIONS
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.
DANGER
!
hazards that will result in severe personal injury or
death.
WARNING
!
practice that can result in severe personal injury or
death.
!
CAUTION
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.
This symbol warns of immediate
This symbol refers to a hazard or unsafe
This symbol refers to a hazard or unsafe
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 harden 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.
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.
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:
• Dizziness
• Headache
• Weakness and Sleepiness
• Throbbing in Temples
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.
• Vomiting
• Muscular Twitching
2
Page 6
SAFETY INFORMATION
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.
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.
3
Page 7
SAFETY INFORMATION CONTINUED
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.
WARNING
The 120V A.C. starter is
equipped with a three-wire
power cord and plug, and is
designed to operate on
120V A.C. household current. The starter must be
properly grounded at all
times to avoid the possibility of injury or death from
electrical shock. Always use
a three-wire ground fault interrupted system. 715432
4
Page 8
ENGINE SET-UP
PRE-START CHECKS
Inspect the engine visually. Check for loose or missing parts
and any damage that may have occurred in shipment.
Refer to Engine Owners Manual for the crankcase oil
capacity.
CAUTION
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.
Starting the engine without oil will
!
Single-grade oil is preferable when temperatures are
consistently -over 30°F (0°C). Multigrade oils are best when
wide temperature variations are anticipated.
WARNING
!
oil, that can cause severe personal injury. Do not check
the oil level while the engine is running.
!
CAUTION
consumption, high operating temperatures, and oil
foaming. Do not overfill the crankcase.
Crankcase pressure can blow out hot
Excess oil can cause high oil
TABLE 1 FIGURE 1
5
Page 9
PROPANE BURNISHER SET-UP
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 10.
HANDLE ADJUSTMENT
Adjust handle by loosening nuts and bolts on each side of
handle. Push handle handle in or pull out to desired position
and reinstall 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.
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.
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 bail to
IDLE position. Never start machine with pad on the floor.
7.With 115V starting system, plug in adapter to wall outlet
and the starter box. Turn key to the on position and push
button on start box. If machine fails to start 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.
9.Machines with mechanical clutches: NOTE: Never engageclutch 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 bail 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!
6
Page 10
OPERATION INFORMATION
ENGINE BREAK-IN
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 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 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.
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
release throttle bail 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: 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 prior to storage.
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.
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.
7
Page 11
MAINTENANCE SCHEDULE
PERIODIC MAINTENANCE SCHEDULE
Following the maintenance schedule and using the engine
properly will result in longer engine life, better performance
and safer operation. Perform each maintenance procedure
after the number of operating hours indicated. These service
intervals are recommended for normal operating conditions.
For operation in hot or dusty conditions, service the engine
more frequently. Neglecting routine maintenance can result
in premature engine failure.
TABLE 2. PERIODIC MAINTENANCE SCHEDULE
SERVICE THESE ITEMS182550100200
For any abnormalities in operation, unusual noises from
the engine or accessories, loss of power, overheating, etc.,
contact your nearest Engine Service Center.
Refer to the following Maintenance Procedures section for
routine maintenance procedures.
AFTER EACH CYCLE OF INDICATED HOURS
Recoil Dust Filter
Inspect Engine Generally
Check Oil Level
Service Air Cleaner Element and Element Wrapper
Change Crankcase Oil
Replace Oil Filter (Onan, Kawaski Models)
Clean Cooling Fins
Clean Spark Arrester
Check Valve Clearance
Replace Air Cleaner Element
Check or Replace Spark Plug
1 - Check for fuel leaks. With engine running, visually and audibly check exhaust system for leaks.
2 - Perform more often when running under severe operating conditions.
3 - Required for initial break-in only.
4 - Required for initial 100 hours, 200 hour interval thereafter. For detailed maintenance, refer to the Engine Service Manual.
X
X
X
X
X
1
2
X
3
3
X
X
X
2
X
4
X
X
X
X
2
WARNING
!
exhaust elbow, or connecting parts as a supporting step. Damage to these and connecting parts can cause an
exhaust leak.
Breathing exhaust gases can result in severe personal injury or death. Do not use air cleaner,
8
Page 12
MAINTENANCE PROCEDURES
WARNING
!
result in severe personal injury or death. Disconnect
the 110 VAC power cord from the starter switch junction
box or disconnect the negative (-) battery cable on 12
VDC starter models. Also disconnect the spark plug
wire while servicing the engine, controls, or associated
equipment.
HOURLY CHECK
Due to the large amount of dust that can be encountered in
floor care applications, the recoil dust filter should be
checked after each hour of operation. Remove and clean
the filter.
DAILY CHECKS
The operator should make a complete visual and audible
inspection of the engine daily. Check the following before
starting the engine for the first time each day.
1. Check all fuel lines and fitting for possible leakage.
2. Check crankcase oil level with the engine off. If engine
has been run, allow a minimum of 10 minutes for the
oil to drain down before checking. Check oil level with
machine in operating position. Do not operate engine
with the oil level below the ADD mark or above the FULL
mark.
3. Inspect exhaust system for possible leakage and
cracks. Locate leaks in muffler and piping while the
engine is operating. Repair leaks immediately.
4. Inspect air cleaner system for leaks. Make certain all
clamps and fittings are tight and free of potential leaks.
5. Check the engine cooling system to make sure the
cooling fins and ducting area are clean. Remove dust,
dirt or oil from the cooling surfaces.
DAILY (8 HOUR) MAINTENANCE
The operator should check the following before the first
start of the day and after every eight hours of operation:
1. Inspect fuel lines and fittings for leaks. Repair leaks
immediately.
2. Look and listen for exhaust system leaks while the
engine is running. Look for cracks and severe rusting
in the muffler and tailpipe. Have all leaks repaired before
continuing to operate the equipment.
CAUTION
!
burns. Allow the engine time to cool before
servicing the exhaust system.
3. Check the engine for dirt and debris and clean the
flywheel air inlet screen and cylinder cooling fins as
necessary. On floorcare equipment engines, remove
the cooling air precleaner element every 4 to 8 hours of
operation and wash it in warm water and mild detergent.
Rinse it thoroughly and let it dry before reusing it. Do
not oil the element.
CAUTION
!
or screen or dirty cooling fins can cause overheating
and engine damage. Keep the cooling fins and air inlet
screen clean.
Accidental starting of the engine can
Hot exhaust parts can cause severe
A clogged flywheel air inlet precleaner
4. Check the engine oil level. The equipment must be
parked on a level surface and the engine stopped. To
get an accurate reading, wait a minute or so to allow
the oil to settle in the crankcase if the engine has been
running.
ENGINE MAINTENANCE
1. Cooling Fin Maintenance: Remove the blower housing
and other cooling shrouds. Clean the cooling fins as
necessary using compressed air or pressure washer.
Reinstall all housings and shrouds.
2. Head Bolt Maintenance: Refer to Engine Manufacturer’s
Service manual.
BELT MAINTENANCE
NOTE: To inspect the belt it is necessary to turn the machine
over. The machine should be turned to the operator’s right
side for all Briggs & Stratton models. If the belt is badly
cracked or worn, it should be replaced. To check for the
proper tightness, squeeze the belt together. The belt should
depress between 1/4 and 1/2 inch. To change belt follow
these instructions:
•Turn burnisher over on the right side.
•Remove the pad holder by holdng the end of the
shaft on the top of the machine with a 3/4 inch
wrench and turn the pad holder counter-clockwise.
•Using the 3/4 inch wrench to turn the end of the
spindle shaft on the top of the machine while
removing the old belt from the spindle pulley.
•Check engine pulley for correct alignment with the
spindle pulley. Check hardware attaching pulleys
for correct tightness.
•Install the new belt onto the engine pulley.
•Reinstall the new belt onto the spindle pulley using
the 3/4 inch wrench to turn the spindle clockwise.
Make sure the belt is correctly placed on the idler
pulley.
•Check belt for correct operation.
•Check all hardware for correct tightness.
FUEL SYSTEM
The fuel system works from vacuum created by the engine
running. Turning the cylinder service valve on pressurizes
the system for flow to the carburetor once the engine starts
to crank.
1. Engine Dust Filter: FAILURE TO MAINTAIN A CLEAN
ENGINE FILTER MAY CAUSE THE EXHAUST
EMISSIONS TO ELEVATE TO DANGEROUS LEVELS.
ALSO, IT WILL CAUSE THE ENGINE TO OVERHEAT,
AND EVENTUALLY DAMAGE THE ENGINE. The
engine dust filter should be cleaned each hour and
after each use by shaking out the dust and then rinsing
with soapy water. Allow filter to air dry, do not wring
out water, this could damage the filter, (squeeze out).
2. Fuel System Adjustment:The carburetor and regulator
have been pre-set at the factory and do not require any
modification. Only authorized, trained personnel should
work on the fuel system of a propane buffer.
9
Page 13
MAINTENANCE PROCEDURES
NOTE: N.F.P.A. rule 58 8-1.4 states, “In the interest of
safety, each person engaged in installing, repairing,
filling, or otherwise servicing an LP-Gas engine fuel
system shall be properly trained in the necessary
procedures”.
3. Hose and Fuel Connections: Inspection: Check for gas
leaks by using a soapy water solution around all
connections with service valve turned on so the fuel
system is pressurized. Inspect all hoses for abrasions
and other signs of wear. Replace all damaged and worn
hoses. Fixing Leaking Joints: Uncouple bad joint, clean
joint and apply pipe sealing compound (use a Loctite
Pipe Sealant with Teflon or equivalent) to clean joint.
Re-couple the joint, tighten plus 1/2 turn. Recheck for
leaks.
4. Carburetor Air Filter: NOTE: Failure to service and clean
carburetor air cleaner may produce excessive carbon
monoxide emissions.
• Remove cover from the air cleaner.
• Remove foam pre-cleaner and use the same
procedure for cleaning the foam pre-cleaner.
• Rinse in mild detergent and squeeze out excess
water, do not wring out.
• Clean filter seal, making sure no dust is allowed
in the carburetor inlet.
• Inspect paper element. Replace if dirty, bent or
damaged.
• Install the clean paper element, pre-cleaner, and
attached air cleaner cover.
If the oil level is low, add API Class SG or SH oil (also SG/
CD, SG/CE, SH/CD or SH/CE) having an SAE viscosity
grade appropriate for the expected temperatures, as
indicated by Table 1.
DO NOT FILL TO A LEVEL ABOVE THE FULL MARK ON
THE DIPSTICK. Drain the excess oil if too much has been
added.
CAUTION
!
consumption, high operating temperatures and oil
foaming. Too little oil can cause severe engine damage.
Keep the oil level between the Full and Add marks on
the dipstick.
Reinstall the dipstick and cap after checking or adding oil,
turning it clockwise until it is secure.
Too much oil can cause high oil
OIL CHANGE
WARNING
!
contacts the skin. Wear protective clothing and keep
fingers and hands clear when draining oil.
Used oil is harmful to the environment. Pour used oil into a
sealed container and deliver it to the nearest recycling
center or automotive service station.
CHANGING THE OIL
1. Run engine for 5 minutes to warm oil, then stop engine
by closing the service valve on the tank. Turn the key
to the off position.
2. Locate the oil drain located the right side of the engine
at its base. Remove the cap on the oil drain tube by
turning counter clockwise with a wrench.
3. Allow oil to drain completely into the receptacle.
4. Replace the cap by turning clockwise.
5. Remove oil fill cap. Always refer to the Engine Manual
for recommended oil and amount.
6. Check oil level with dip stick in oil fill cap. Add additional
oil if necessary. NOTE: TO CHECK OIL ON THE
BRIGGS & STRATTON MODELS, SCREW THE CAP
IN AND OUT AGAIN. ALWAYS MAKE SURE THE
MACHINE IS SITTING LEVEL WHEN CHECKING OIL.
7. Replace fill cap. Hand tighten only.
Hot crankcase oil can cause burns if it
OIL FILL CAP AND DIPSTICK
10
Page 14
TROUBLESHOOTING
Table 3 provides basic troubleshooting guidance. If you fail to
resolve the problem after taking the corrective actions
suggested, contact the equipment or engine dealer.
WARNING
!
hazards that can result in severe personal injury or death.
Only qualified service personnel with knowledge of fuels,
electricity, and machinery hazards should perform service
procedures. Review Safety Precautions.
Many troubleshooting procedures present
WARNING
!
Always allow the engine time to cool before performing any
maintenance or service.
Hot engine parts can cause severe burns.
TABLE 3. TROUBLESHOOTING
Problem Corrective Action
1. The engine fails to cranka. Not pluged into outlet.
2. The engine cranks slowly.a. Change engine oil having the proper viscosity for ambient temperature.
See table 1.
b. Check oil level for overfilling.
c. Check starter electrical connections.
3. The engine cranks but failsa. Check the fuel tank or LPG container and fill as necessary.
to start.b. Check, and if necessary, reconnect the fuel line to the vapor-withdrawal
fitting on the LPG container.
c. Open any closed fuel shut-off valve (check keg in on position).
d. Check engine oil level and add oil as necessary.
e. Service the air cleaner.
f.Clean the air precleaner (floorcare engines).
g. Replace the spark plugs.
4. The engine runs anda. Check the fuel tank or LPG container and fill as necessary. On cold days
then stops.the LPG container may have to be kept at least half full to provide the rate
of vaporization necessary to keep up with the engine fuel demand.
b. Check, and if necessary, reconnect the fuel line to the vapor-withdrawal
fitting on the LPG container.
c. Check the engine oil level and add oil as necessary. Drain excess oil if the
level is above the dipstick FULL mark.
5. The engine exhaustsa. Service the air cleaner.
black smoke.
6. The engine misfires.a. Replace the spark plugs.
11
Page 15
TROUBLE SHOOTING
ENGINE WILL NOT START
CAUSES:
No fuel, blown head gasket, bad ignition coil, dirty air
cleaner, wires broken or disonnected, engine overload,
insufficient vacuum, bag spark plug, fuel system out of
adjustment.
SOLUTION:
Refer to engine manual for servicing and instruction.
HARD TO START
CAUSES:
Kinked fuel line, dirty air filter, bad spark plug, blown head
gasket, low oil, engine overload, carburetor needs
adjustment, regulator needs adjustment, insufficient
vacuum, improper timing, coil or valves need adjusting.
SOLUTION: Refer to engine manual for servicing and
instruction.
ENGINE LACKS POWER
EXCESS VIBRATION
CAUSE:
Engine overload, loose bolts on engine or deck of unit, low
fuel level, dirty air filters, faulty spark plug, pad not centered.
SOLUTION:
Refer to engine manual for servicing and instruction.
MACHINE PULLS TO ONE SIDE
CAUSE:
Bent wheel bracket, wheel is wearing too much on one
side.
SOLUTION:
Check for bent bracket or worn wheel.
MACHINE “BOGS DOWN” WHEN IN USE
CAUSE:
Too much pressure or operator is bearing down too hard.
Dirty air filters.
CAUSES:
Head gasket leaks, governor improperly adjusted, check
air filter, insufficient vacuum, bad spark plug, no
compression worn rings, improper valve clearance, kinked
fuel line, improper oil level.
SOLUTION:
Refer to engine manual for servicing and instruction.
SMELL OF BURNED RUBBER
CAUSE:
Belt out of adjustment.
SOLUTION:
Refer to Maintenance Procedures.
SOLUTION:
Follow proper operating instructions, let machine operate
on its own weight, do not apply upward pressure to handle
of machine.
ENGINE STOPS RUNNING
CAUSE:
Out of fuel, faulty spark plug, low oil, dirty air filters, high
exhaust emissions.
SOLUTIONS:
Refer to engine manual for servicing and instruction.
HIGH FUEL CONSUMPTION
CAUSE:
Dirty air filters, dirty air cleaners.
SOLUTION:
Keep engine and air filters clean.
12
Page 16
ENGINE 13HP HONDA
13
Page 17
PARTS LIST for 13HP HONDA
ItemPart No.Qty.Description
13601081Handle Sleeve
27126382Nut-Hex 10-24 Nyloc
37115034WSR-Flat #10
4515-10-242SCR-RD HD 10-24 x 1 1/2
52201311Buckle TB2-61
67153431Decal, Propane Warning
72201181Propane Tank Steel
82203931Battery Cover Weldment
97115054WSR-Flat 1/4
102200562Felt 2 x 10
117113738Nut-Nyloc 1/4-20
122203851Engine 13 HP Prop Honda
137115154WSR-Flat .406 x .812 x .06
147114394Nut-Wizz 3/8-16
157115066WSR-Flat 5/16
167130312BLT-HH 5/16-18 x 2.00
172204821Starter Assy, 115V Tecumseh
18220021PTD1Casting
197115444WSR-Helical 1/4
207112034BLT-HH 1/4-20 x .62
217130434BLT-HH 3/8-16 x 1 1/4 #5
22831306190
232202211Electric Lockoff Assy
243502801Hose Barb 1/8 x 1/8 NPT
252202461Elbow-90 1/8mpt x 1/8fpt
262204831Regulator Beam T60-E
272202371Regulator Bracket
282202451Elbow-45 3/8mpt x 3/8fpt
293424301Hose Barb
304500762Crimp Clamp
312202691Fuel Hose - 3/8 ID x 30”
322201921Tank Frame Weldment
33220070-11High Pressure Hose
34220065145° Male Elbow 1/4 x 3/8
3562-252-A1Connector - Female
367155011Decal - Made in USA
377152451Decal - Ignition Switch
387405391Hour Meter
397151921Decal - Dashboard
407152421Decal - Propane Warning
41741056-12Key-Ignition, Replacement
427410561Keyswitch w/Ground
438290522Nylon Bushing
447117212Retaining Ring
452201121Torsion Spring
4655-161-A2WSR-Special
472203431Handle
487113742Nut-Nyloc 5/16
492203381Handle Bracket LH
502203391Handle Bracket RH
517112074BLT-HH 1/4-20 x 1.00
527130362BLT-HH 5/16-24 x 1.25 BZ
537113804Nut-Nyloc 3/8-16
547112134BLT-HH 1/4-20 x 1.62
557125382SCR-MC 10-24 x 1.75 SS
562550451Spacer, .19 x .37 x .47
57220328-11Cable, Lined
587113012Nut-Hex 6-32
597115512WSR-Internal LOC #6
602202701Bail, Throttle LH Cable
617112254BLT-HH MM6 x 1.0 x 20mm
627113882Nut-Hex 6mm
637115042WSR-Flat 1/4 SS
647130424BLT-HH 3/8-16 x 1.00 #5
657114394Nut-Flanged Wizz 3/8-16
667154321Decal, GFCI Warning
o
Elbow Street 1/4-1/4
14
Page 18
ENGINE 13HP HONDA
15
Page 19
PARTS LIST for 13HP HONDA
ItemPart No.Qty.Description
17115456WSR-Helical 5/16
27113541Nut-Acorn 3/8-16
37115461WSR-Helical 3/8
44300291Caster
57115066WSR-Flat 5/16
67131654SCR-FH SC 5/16-18 x 1.00
72203302Wheel Bracket Weldment
82200492Bushing .381 x .5 x 1.75
92203402Wheel 6”
107130492BLT-HH 3/8-16 x 2.75
112201981Spacer
1272-179-A1Spacer
138336211Key 1/4 x 1/4 x 1.00
142201971Pully-4.6 OD
1582-138-B-31Special Washer
163502421Belleville Washer 7/16
1760-716-241BLT-HH 7/16-20 x 1.5
187121121BLT-HH 1/2-13 x 2.75
192200401Rotary Tensioner
2077-81-A1Spacer
212200411Belt Idler w/Bushing
22364-8161Nut-Nyloc 1/2-13
232200101Belt Tensioner Assy.
242200971V Belt BX44T (M220021K17,K17C)
252200196Gimbal Spacer Disc
267604011Center Cup
277604021Center Cup Retainer
282200051Metal Spinning (M220021K17,K17C)
2922002012BLT-Special Elevator
302200181Gimbal Disc
312200221Adapter
322200451Split Tapered Bushing
332200441Pulley
347117192Retaining Ring, Ext. 1.00
352200031Key, Woodruff 5/16 x 1
362200021Shaft, Pad Driver
377620932Bearing
38220023MCH1Bearing Housing
392200161Skirt (M220021K17,K17C)
402201191Skirt Retainer (M220021K17,K17C)
4182889412Pop Rivet
427153851Decal - Minuteman
43220021PTD1Casting
4455-161-A2WSR-Special
4571137412Nut-Nyloc 5/16
467113802Nut-Nyloc 3/8-16
16
Page 20
WIRING DIAGRAM 13HP HONDA
17
Page 21
MODEL 50 DRY-GAS REGULATOR, CROSS SECTION, PARTS LIST
LP-gas vapor enters at point (A), then passes into primary area
(B) at point (28), where pressure is reduced from up to 250 p.s.i.
at the tank to 4 p.s.i. in area (B). Fuel pressure against diaphragm
(4) overcomes spring (6) and as movement increases, spring (9)
will close lever (10). The primary diaphragm breather (not shown
in drawing), is vented to secondary chamber so that rupture of
this diaphragm would direct fuel into the carburetor.
Fuel now moves through passage (E), past secondary valve (29)
into secondary area (C). As negative pressure (vacuum) is created
at carburetor venturi and is transmitted through dry-gas hose to
chamber (C) atmospheric pressure, exerted through vent hole
(G), forces down secondary diaphragm (18), secondary lever
(24) and spring (22). Fuel will flow in proportion to air velocity
through carburetor venturi, insuring an ideal mixture at all engine
speeds.
Whenever engine is operating, vacuum diaphragm (16) is down
against floor (H) and spring (17) is collapsed. The idle and starting
adjustment is made with tapered screw (27) which regulates the
whisker wire system (not shown), opening up secondary orifice
slightly (but only when vacuum diaphragm is drawn down). Very
little vacuum is needed to start this vacuum diaphragm travel; 0.2”
Mercury to start and 0.5” Mercury for full travel. The instant engine
stops rotating, loss of vacuum in section (D) releases diaphragm
(16), causing bumper (K) to push against secondary lever (24),
overcoming action of whisker wire and insuring 100% lockoff.
This patented Beam design will lock off primary pressures up to
five times in excess of normal, permits starting without priming or
choking.
Order by Part No. NOT by Reference No
18
Page 22
WARRANTY INFORMATION
CARB SMALL ENGINE CERTIFICATION
MANUFACTURER: HONDA
INTERNATIONAL INC
ENGINE FAMILY:
WMNTS.4372K1
XMTRS.2492K3
XMTRS.4942K2
CALIFORNIA EMISSION CONTROL
SYSTEM WARRANTY STATEMENT
The California Air Resources Board and
Minuteman International, Inc. are pleased
to explain the emission control system
warranty on your 1998 and later utility
engine. In California, new utility and lawn
and garden equipment engines must be
designed, built and equipped to meet the
State’s stringent anti-smog standards.
Minuteman International, Inc. must
warrant the emission control system the
your utility equipment engine for the
periods of time listed below provided
there has been no abuse, neglect or
improper maintenance for your utility
equipment engine.
Your emission control system may
include parts such as the carburetor or
fuel injection system, the ignition system
and catalytic converter. Also included may
be hoses, belts, connectors and other
mission-related assemblies.
Where a warrantable condition exists,
Minuteman International, Inc. will repair
your utility equipment engine at no cost
to you including diagnosis, parts and
labor.
MANUFACTURER’S WARRANTY
COVERAGE
The 1998 and later utility and lawn and
garden equipment engines are
warranted for two years. If any emissionrelated part on your engine is defective,
the part will be repaired or replaced by
Minuteman International, Inc.
OWNER’S WARRANTY
RESPONSIBILITIES
As the utility and lawn and garden
equipment, you are responsible
for the performance the required
maintenance listed in your owner’s
manual. Minuteman International, Inc.
recommends that you retain all receipts
covering maintenance on your utility
equipment, but Minuteman International,
Inc. cannot deny warranty solely for
the lack of receipts or for your failure
to ensure the performance of all
scheduled maintenance. As the utility
equipment engine owner you should,
however, be aware that Minuteman
International, Inc. may deny you warranty
coverage if you utility equipment engine
or a part has failed due to abuse,
neglect, improper maintenance or
unapproved modifications.
You are responsible for presenting your
utility equipment to a Minuteman
International, Inc. distribution center as
soon as the problem exists. The warranty
repairs should be completed in a
reasonable amount of time, not to exceed
30 days.
If you have any questions regarding your
warranty rights and responsibilities, you
should contact Minuteman International,
Inc. at 1-800-323-9420. Minuteman
International, Inc. 111 South Rohlwing
Road, Addison, IL 60101.
MANUFACTURER’S EXPLANATION OF
WARRANTY COVERAGE
The engine manufacturer warrants to the
original owner and each subsequent
purchaser that each subsequent
purchaser that each new engine will be
free from manufacturing defects in
materials or workmanship under normal
use during a period of two (2) years from
the date of delivery, provided it is operated
and maintained in accordance with
engine owner manual operating
instructions.
Repair or replacement of any warranted
part will be performed at no cost to the
owner at a warranty station. For the
Minuteman International, Inc. repair
station nearest you call 1-800-323-9420.
CARB SMALL ENGINE CERTIFICATION
MANUFACTURER: HONDA
INTERNATIONAL, INC.
ENGINE FAMILY:
WMNTS.4372K1
XMTRS.2492K3
XMTRS.4942K2
Any warranted part which is not
scheduled for replacement as required
maintenance, or which is scheduled only
for regular inspection to the effect of
“repair or replace as necessary” is
warranted for the warranty period. Any
warranted part which is scheduled for
replacement as required maintenance is
warranted for the period of time up to
the first scheduled replacement point for
that part.
The owner will not be charged for
diagnostic labor which leads to the
determination that a warranted part is
defective; if the diagnostic service is
performed at a warranty station.
Minuteman International, Inc. is liable for
damages to other engine components
caused by failure of a warranted part still
under warranty. Minuteman International,
19
Inc. is not liable for failure of warranted
parts caused by the use of add-on
modified parts.
Warranty service or repairs are available
at all Minuteman International, Inc service
centers that are franchised to service this
engine.
Any Minuteman International, Inc.
approved replacement part may be
used in the performance of warranty
maintenance or repairs on emissionrelated parts and will be provided to the
owner without charge if the part is still
under warranty.
The owner is responsible for the
performance of the required
maintenance, as defined in the
Minuteman International, Inc. owner’s
manual for this engine.
SPECIFIC EMISSION-RELATED
WARRANTED PARTS
Fuel Metering System
Carburetor and internal parts
LPG Regulator
Air Induction System
Air intake manifold
Air filter element
Air filter element-prefilter
Ignition System
Spark plug
Magneto
Catalyst or Thermal Reactor System
Exhaust manifold
Muffler
Miscellaneous items used in above
systems
Fuel line and vacuum hoses, wire
harness, connectors & assemblies
To obtain warranty service, you must take
your equipment together with proof of
original retail purchase date, at your
expense to an authorized engine dealer
If upon a warranty inspection, a defect is
identified, such warranty repairs or
replacement will be made without charge
for parts or labor. All parts replaced under
warranty will be considered as part of the
original product and any warranty on
those parts will expire coincident with the
original product warranty.
Issue Date: 11/11/97
IHNXS.3892U meets US EPA SNRE P#2
2005 and CARB Tier II 2002 SORE
Regulations.
Page 23
LIMITED WARRANTY
Minuteman International, Inc. warrants to the original purchaser/user that this product is free from defects in workmanship and
materials under normal use and service for a period of two years for the engine and three years for machine components from
date of purchase. In addition, Minuteman International, Inc. will, at its option, honor labor warranty claims for the first 12 months
on machine components only from date of sale, provided such claims are submitted through and approved by factory authorized
repair stations. Minuteman International, Inc. will, at its option, repair or replace without charge, except for transportation costs,
parts that fail under normal use and service when operated and maintained in accordance with the applicable operation and
instruction manuals.
This warranty does not apply to normal wear, or to items whose life is dependent on their use and care, such as belts, cords,
switches, hoses, rubber parts, electrical motor components or adjustments. Parts not manufactured by Minuteman International,
Inc. such as engines, batteries, battery chargers, hydraulic pumps, and tires are covered by and subject to the warranties and/
or guarantees of their manufacturers. Please contact Minuteman International, Inc. for procedures in warranty claims against
these manufacturers.
Special warning to purchaser — Use of replacement filters and/or prefilters not manufactured by Minuteman International, Inc.
or its designated licensees, will void all warranties expressed or implied.
A potential health hazard exists without exact original equipment replacement.
All warranteed items become the sole property of Minuteman International, Inc. or its original manufacturer, whichever the case
may be.
Minuteman International, Inc. disclaims any implied warranty, including the warranty of merchantability and the warranty of
fitness for a particular purpose. Minuteman International, Inc. assumes no responsibility for any special, incidental or consequential
damages.
This limited warranty is applicable only in the U.S.A. and Canada, and is extended only to the original user/purchaser of this
product. Customers outside the U.S.A. and Canada should contact their local distributor for export warranty policies. Minuteman
International, Inc. is not responsible for costs or repairs performed by persons other than those specifically authorized by Minuteman
International, Inc. This warranty does not apply to damage from transportation, alterations by unauthorized persons, misuse or
abuse of the equipment, use of non-compatible chemicals, or damage to property, or loss of income due to malfunctions of the
product.
If a difficulty develops with this machine, you should contact the dealer from whom it was purchased.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state. Some states do not
allow the exclusion or limitation of special, incidental or consequential damages, or limitations on how long an implied warranty
lasts, so the above exclusions and limitations may not apply to you.
World HeadquartersMinuteman Canada, Inc.
Minuteman International, Inc.2210 Drew Road
111 South Rohlwing RoadMississauga, Ontario
Addison, Illinois 60101L5S 1B1