London Foggers 20-20 User manual

ONE YEAR LIMITED WARRANTY
LONDON FOG, INC., SUBJECT TO THE PROVISIONS BELOW WARRANT EACH NEW PRODUCT
MANUFACTURED BY THE COMPANY TO BE FREE FROM DEFECTS IN MATERIAL AND/OR WORKMANSHIP
IN NORMAL SERVICE FOR THE PERIOD OF ONE (1) YEAR COMMENCING WITH DELIVERY OF THE MACHINE
TO THE ORIGINAL INVOICE.
The obligation under this warranty is expressly limited to the replacement or repair, at the Company’s
option, at the plant of LONDON FOG, INC., Long Lake, Minnesota or at a service facility designated by the
company, of such part or parts as inspection shall disclose to have been defective. This warranty does not
apply to defects caused by unreasonable use (including failure to provide reasonable and necessary
maintenance) while in the possession of the user.
LONDON FOG, INC. SHALL NOT BE LIABLE FOR COLLATERAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES OF ANY KIND, including, but not limited to the replacement or repair of defective parts or
machines. The user assumes all liability for any damage of any kind which may result from its use or misuse
by any employees, agents, persons or third parties unknown to Company or User.
All warranties, express, or implied, including any warranty created or established by statutory law or
operation of law, are deemed null and void in the event that a product has been physically modified in any
manner by the use, or any person or party other than the company.
The company makes no warranty with respect to engines, air pumps, blowers and products distributed by
the Company. Those parts and products are subject to warranties from their respective manufacturers.
THE WARRANTY EXRESSED IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, STATUTORY
OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. NO WARRANTIES ARE EXPRESSED OR IMPLIED WHICH EXTEND BEYOND THE
DESCRIPTION CONTAINED IN THIS WRITTEN WARRANTY AND NO ONE IS AUTHORIZED TO MODIFY THIS
WRITTEN WARRANTY.
TOTAL SATISFACTION IS A TRADITION AT LONDON FOG, INC.
EXCELLENT CUSTOMER SERVICE IS A RIGHT OF EVERY LONDON FOGGER OWNER.
THANK YOU FOR YOUR PATRONAGE AND LOYALTY.

INDEX
Section Page
I. Specifications 1
II. Safety Precautions 2
III. Assembly/Installation 4
IV. Service Before Start-Up 6
V. Pre-Start Check List 7
VI. Start-Up/Shut Down 8
VII. Operation
a. Spraying 9
b. Setting Flow Rate 10
c. Calibration 11
d. Flushing 12
VIII. Service Schedule 13
IX. Maintenance
a. Air Pressure 14
b. Air Pump/Air Filter 14
c. Air Pump Oil Level 14
d. Air Pump Bearings 14
e. Air Pump Internal 15
f. Battery 15
g. Engine Oil Level 15
h. Engine Oil Filter 16
i. Engine Cooling 16
j. Engine Air Cleaner 17
k. Engine Fuel Filter 18
l. Engine Governor 18
m. Pulsation Damper 18
n. Formulation/Flushing Filter 19
o. Drive Belt Alignment 19
X. Trouble Shooting 21
XI. Preparation for Storage 25
XII. Fluid Systems Diagram 26
XIII. Wiring Diagrams
a. Engine Wire Diagram 27
b. Pump Box Wiring Diagram 27
c. Cab Control 28
XIV. Parts Breakdown –Exploded Views 29-31

1
SPECIFICATIONS
TYPE: Vehicle or trailer mountable –non-thermal, U.L.V. (Ultra-Low Volume)
Cold Fog aerosol generator.
ENGINE: Twin cylinder Honda with overhead valves, 4-cycle, gasoline, 21hp, 12v.
Fuel Consumption –regular or unleaded automotive 1 gal/hr. Electric
start alternator, pressure lubrication and oil pressure sensing system.
AIR PUMP: Positive displacement, rotary, cast iron. 3000rpm, 6psi
FORMULATION PUMP: Positive displacement piston pump with adjustable output from:
0 to 20 oz./min (0 to 491 ml/min)
NOZZLE SYSTEM: High output, noise dampened with 360 degree horizontal and vertical
adjustment.
TANKS: All tanks are corrosion-resistant, high-density polyethylene.
Formulation: 15 US Gallons (56.7 liters)
Flushing: 1.5 US Quarts (1.42 liters)
Gasoline: 6.0 US Gallons (22.7 liters) with EPA Certified charcoal air filter
PARTICLE SIZE: 80% of droplets less than 20-micron diameter depending on flow rate
and viscosity.
DIMENSIONS: Weight Empty: 504 lbs. (228 kgs)
Length: 46 inches (117 cm)
Width: 33 inches (84 cm)
Height: 27 inches (69 cm)
ENGINE: Power Rating at 3000rpm: 21 hp (15.66kw)
Displacement: 688.0 cm 3 (41.97 cu-in)
Bore: 78.0 x 72.0 mm
Stroke: 3.07 x 2.83 in
Compression Ratio: 8:5:1
Oil Capacity (with filter) *: 1.6 US Qt. (1.5 L)
Spark Plug Type: ZFR5F (NGK)
BLOWER: Frame Size: 45
Maximum RPM: 3000
Maximum Pressure: 10psi
Recommended Gear Oil: SAE 40 non-detergent
Gearbox Capacity: 12.7 Fl oz (0.37 L)
*For best results, fill to the “F” mark on dipstick as opposed to adding a given quantity of oil. Always check
the level on dipstick before adding more oil. For engines equipped with oil filter –an additional ½ US pint
(0.28 L) of oil is required when oil filter is replaced.

2
SAFETY PRECAUTIONS
WARNING
READ AND UNDERSTAND THESE SAFETY PRECAUTIONS BEFORE OPERATING MACHINE
NOTE: When moving a London Fogger unit with a forklift, ensure the engine is on the side closest to
the forklift. Lifting from the wrong side may result in damage to the unit.
1. ENGINE AND FUEL: This machine uses gasoline as the fuel for the internal combustion engine and
all precautions commonly applying to this volatile fuel should be observed. Exercise extreme
caution to avoid spilling gasoline. If spillage occurs, wipe off and allow evaporation time before
starting the engine. DO NOT attempt to put fuel in the tank while the machine is still running. Avoid
smoking or open flame in area when handling gasoline. Never run the unit indoors unless exhaust
is vented to outside. These fumes contain carbon monoxide which is colorless and odorless and
can be fatal.
CAUTION:
DO NOT OPERATE ENGINE WITHOUT MUFFLER
DO NOT TOUCH HOT MUFFLER, CYLINDERS OR FINS AS CONTACT MAY CAUSE BURNS
EXCEPT FOR ADJUSTMENT, DO NOT OPERATE THE ENGINE IF AIR CLEANER OR COVER
DIRECTLY OVER THE CARBURETOR AIR INTAKE IS REMOVED.
DO NOT RUN THE UNIT IF THE BELT GUARD IS REMOVED –EVER!
DO NOT TAMPER WITH GOVERNOR SPRINTS, GOVERNOR SLINKS OR OTHER PARTS
WHICH MAY INCREASE OR DECREASE THE GOVERNED ENGINE SPEED.
2. ENGINE SPEED: (RPM) should be checked periodically to ensure that it is operating correctly as
engine speed affects the rate of air flow through the nozzle system which controls droplet particle
size. The correct engine speed should be 15.5 kW (21.1 PS,20.8 bhp) @3000 rpm
3. BLOWER CASING: Blower casing and associated piping or accessories may become hot enough to
cause skin burns on contact.
a. DO NOT TOUCH WHEN HOT.
b. Do not reach into any opening in the blower while it is operating, or while subject to
accidental starting.
c. Disconnect power before doing any work and avoid bypassing or rendering inoperative any
safety or protective devices.
d. DO NOT operate blower with inlet filter removed.

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e. DO NOT stand in the discharge air blast from the nozzle.
f. Avoid extended exposure in close proximity to machinery which exceeds safe noise levels.
4. MACHINE DAMAGE: Never operate a machine after it has been damaged. A damaged machine
can be very hazardous.
5. WIND: Spraying during windy conditions is not usually practical because the formulation will drift
out of the intended area.
6. SAFETY EQUIPMENT: In addition to any safety equipment that may be required by the type of
formulation, which is being used, the following items should be with each vehicle which carries this
machine during fogging operations:
a. Fire Extinguisher, chemical type rated for fuel fires.
b. First Aid Kit.
c. Eye Wash Solution.
d. Safety Glasses.
e. Container of Oil Dry Compound.
f. Gloves rated for high temperature.
g. Respirator adequate for formulation being used.
7. CHILDREN: Many spraying operations are performed in residential areas commonly at dusk. This
presents the operator with the problem of children who are attracted to the noise and/or the mist
being created. The possible hazard lies in the toxic effect of some formulations, the severity of
which depends upon the chemical used, mist density, and the length of time of direct exposure. IT
IS THE OPERATOR’S RESPONSIBILITY TO DISCOURAGE ANYONE FROM PLAYING IN THE MIST OR
BEING NEAR THE MOVING VEHICLE.
8. FORMULATIONS: Ensure that formulations are applied only in strict compliance with formulation
label as well as local, state, and federal regulations.
a. Always comply with any requirements for protective clothing, goggles, gloves, facial masks,
or respirators required on the formulation label.
b. DO NOT exceed the dosage set forth on the registration label of the insecticide to be used.
c. Always store formulation in its original labeled container.
IN NO WAY IS IT TO BE COSTRUED THAT THE CHEMICALS AND/OR DOSAGES ARE THE
RECOMMENDATION OF LONDON FOG, INC. ALWAYS ADHERE TO THE CHEMICAL
MANUFACTURERS DIRECTIONS OR CONSULT WITH A CERTIFIED DISTRIBUTOR FOR EACH
MANUFACTURER.

4
ASSEMBLY/INSTALLATION
1. SHIPPING CONTAINER;
Remove the protective shipping container. Look for any hidden shipping damages and, if
present, report it immediately to the carrier.
NOTE: It is a good idea to retain the original machine shipping carton as well as its inner packing
and blocking materials for future storage and/or shipment which may be required.
2. REMOTE CONTROL UNIT ASSEMBLY:
a. Remove Remote Cab Control Unit from the Battery Box.
b. Place the Remote Cab Control Unit where it will not be damaged while the machine
is being prepared.
c. Lift machine onto the vehicle with the discharge end of the machine toward the rear
of the vehicle.
d. Pass the Remote Cab Control Unit through an open window and locate within reach
of the person who will be operating the machine. If permanent vehicle installation is
desired, the remote-control cable can be passed through a small hole in the vehicle
cab and then reconnected. Make sure the small hole provides proper protection
against wiring damage and is re-sealed to prevent exhaust gases from entering inside
of the vehicle.
e. Using the most convenient routing, run the cab control to the outermost electrical
socket (blower end) on the flow control pump box. As the machine is shipped this
will be the only unused socket. All the electrical connectors on the machine are
polarized to prevent incorrect connections.
f. Orient the electrical plug on the cab control so that the electrical pin locations match
the mating pin receptacles in the socket and push the plug firmly into the socket.
(Diagram is located on the pump box lid)
3. INSTALLATION:
a. Securely bolt the machine to the vehicle.
b. Loosen the nozzle swivel joints and orient the nozzle as required by the formulation
label. The usual set up is towards the rear and 45 degrees up. Retighten joints.
c. Correct battery type is 24/24m series 12V 36 Ah, 500cc minimum with marine style
wing nut terminals preferred (not included with the fogger).

5
4. BATTERY INSTALLATION
a. When installing the battery, connect the negative (-) cable last to prevent sparking
and shorting.
b. When disconnecting is required, remove negative (-) connection first.
c. Reversed polarity can cause damage to the starting and charging systems.
WARNING
DO NOT JUMP START THE BATTERY WHILE
CONNECTED TO THIS MACHINE.
ALWAYS DISCONNECT THE BATTERY AND
CHARGE THE BATTERY SEPARATELY.

6
SERVICE BEFORE START-UP
1. ENGINE
a. Gasoline –Service the engine with gas and oil. For the best results, use only regular
unleaded gasoline with an octane rating of 87 or higher. In countries using the research
method, it should be 90 octane minimum. If leaded gasoline is used, combustion chamber,
cylinder head and spark plug may require more frequent service (see SERVICE SCHEDULE,
section VII).
b. Oil –Use high quality oil of API service class SF. Multi-Viscosity SAE 10W-30 is
recommended.
Make sure the machine is sitting level. Add the proper type of oil through the oil filter tube to
bring the level up to, but not over, the “F” mark. The engine is oiled when the unit is shipped
unless otherwise labeled.
CAUTION
DO NOT operate the engine with oil level below the “L” mark or over the “F” mark.
2. BLOWER
a. Before starting the machine, be sure the gearbox on the blower is filled to the proper level
with oil. The blower is shipped with oil. Check prior to start-up.
b. To fill the gearbox, remove the combination breather/knob on the top side of the gearbox
and also remove the lower ¼” pipe plug (called the overflow hole) which is on the air filter
side of the gearbox.
USE SAE 40 NON-DETERGENT OIL
Fill the gearbox up to the lower overflow hole. Replace the plug and the breather.
DO NOT OVERFILL
3. FORMULATION
Place formulation in the large black formulation tank. Always use a funnel and strainer to avoid
getting dirt or other contaminates in the tank.
USE ONLY FORMULATION THAT IS LABELED FOR THE INTENDED USE
4. FLUSHING FLUID
Using a funnel with strainer or filter, place the appropriate flushing fluid (for the formulation being
used) in the flushing tank.

7
PRE-START CHECKLIST
SEE SECTION #
All safety equipment is in place _____ I.
Remote control panel is in place _____ IV.
Battery is secure in place _____ IV.
Sufficient gasoline in gas tank _____ IV.
Oil in engine at proper level _____ IV.
Oil in air pump at proper level _____ IV.
All hoses tight and connected _____
Sufficient formulation in tank _____ IV.
Flushing fluid in flush tank _____ IV.
Flow rate is calibrated _____ VII.
Nozzle is aimed correctly _____ III.
Spray switch is in OFF position _____ VI.
Selection switch is in SPRAY position _____ VI.
Ignition switch is in OFF position _____ VI.
Pump override switch is in OFF position _____ VII.
CAUTION
Before proceeding with any spraying operation, the operator should be thoroughly familiar with
starting and stopping the machine and with all the operating controls. If you are operating the
machine for the first time, exercise the machine through its full operational sequences from a
position of full visibility of the machine before operating the machine fully remote. This is also a
good idea for experienced operators who may be operating a new machine or who may be
reactivating a machine after repairs or a period of inactivity. Refer to the operation section for
starting and stopping instructions.

8
START-UP / SHUTDOWN
1. Be sure to complete the service before start-up: pre-start checklist and all safety precautions,
before starting the machine.
2. START
Move the engine ignition switch (on the control panel, see figure 2 –section VII) to the “ON”
position.
a. On a cold engine, push both the start and the choke buttons at the same time. As soon as
the engine starts to fire, release the choke button. Release the start button as soon as the
engine can run on its own.
On cold engines, it may be necessary to intermittently push the choke button until the
engine is running smoothly.
NOTE: The best starter life is provided by using short cranking cycles of several seconds;
prolonged cranking can damage the starter motor if cranked more than 15 seconds per
minute.
b. On a warm engine, push the starter button until the engine starts.
If a very hot engine fails to start, some choking may be required.
CAUTION
If the engine develops enough speed to disengage the starter but does not keep running
(false start) the engine rotation must be allowed to come to a complete stop before
pushing the starter button again. Failure to do so will damage the starter drive.
3. SHUT OFF
Control Panel
To turn off the engine, move the stop switch to the “OFF” position.

9
OPERATION
Read this complete OPERATION section and the section on SAFETY PRECAUTIONS before starting the
machine.
For first time operation, the sections on INSTALLATION, SERVICE BEFORE START-UP, and PRESTART
CHECKLIST must be performed before proceeding with operation.
When operating this machine for the first time, move to an uncongested and well-ventilated work area in
an open area away from flammable materials.
WARNING
READ THE SECTION ON SAFETY PRECAUTIONS BEFORE PREPARTING TO DISPENSE FORMULATION.
READ AND THOROUGHLY UNDERSTAND ALL THE INFORMATION, CAUTIONS AND WARNINGS ON
THE FORMULATION LABEL WHICH MAY AFFECT PERSONAL SAFETY. KNOW ANY DANGERS OF THE
SOLUTION USED AND KNOW WHAT TO DO IN CASE OF AN ACCIDENT INVOLVING THE SOLUTION.
ALWAYS USE THE APPROPRIATE SAFETY EQUIPMENT AND DRESS ACCORDING TO THE CHEMICAL
FORMULATION WHICH IS BEING USED.
DO NOT USE ANY SUBSTANCES FROM UNMARKED CONTAINERS OR FROM CONTAINERS WITH
OBVIOUSLY ALTERED LABELS.
READ AND FOLLOW THE INSTRUCTIONS ON THE CHEMICAL SOLUTION LABEL FOR ULV SPRAYING
OF THE SOLUTION.
DO NOT SPRAY NEAR AN OPEN FLAME OR HOT MATERIALS.
DO NOT LEAVE THE MACHINE UNATTENDED.
1. SPRAYING
a. With the engine running (it will only be at idle), move the selector switch on the control
panel to the desired SPRAY or FLUSH position.
b. Turn the spray switch on the control panel to the ON position (engine ignition switch
must be on for spray pump to operate). The engine will automatically throttle up from
the idle position.
CAUTION
Before dispensing insecticide, be certain that no one is present in the area of the nozzle or aerosol
dispersion area.

10
c. To STOP spraying, turn the spray
switch to the OFF position.
d. When the spraying operation is
complete, the unit must be flushed
in accordance with the FLUSHING
SYSTEM section of this manual.
2. SETTING THE FLOW RATE
NOTE: Since this machine may be used
with various materials, the machines are
shipped with the flow rate set at
approximately 9.0 Fl oz/min.
a. Loosen the two screws holding the
flow control pump box shut and
open the pump box cover.
b. Loosen the pump pointer locking
plate by loosening the two knurled rings, one on each side of the locking plate.
c. Move the blue handle/pointer until the desired flow rate is obtained.
NOTE: All flow rates must be determined by calibration –see OPERATION, section VII-3.

11
d. Lock the pointer handle at the desired flow rate setting by tightening the two knurled
rings. DO NOT OVERTIGHTEN. Do not use any additional wrenches. Hand Tighten Only.
e. Close the pump box and fasten latches.
3. CALIBRATION
NOTE: All calibrations must be made with the engine running and the fluid flowing
through the nozzle.
a. Loosen the two screws holding the flow control pump box shut and open the pump
box cover.
b. Run the engine and turn the spray switch to the “ON” position until the fluid lines are
filled from the formulation tank to the stray nozzle and no air is trapped in the lines.
c. Remove the fluid line from the formulation tank and insert it into a 1000ml. graduated
cylinder filled with your formula.
d. With the engine running, turn the spray switch “ON” for a measured amount of time
using a stopwatch. Record the flow rate and pump setting for future reference.
e. Loosen the pump pointer locking plate by loosening the two knurled nuts and adjusting
pointer as needed. Tighten the two knurled nuts.
f. Refill the graduated cylinder and repeat steps D and E until the desired flow rate is
obtained.
g. Replace the fluid line to the formulation tank.
The following are rough estimates of flow rates using very light mineral oil. Always calibrate
to establish correct flow rates for the chemical or insecticide to be used.
Flow Rate (ml/minute) Flow Rate (oz/minute) Scale Setting
95 3 0.05
150 5 1.00
250 8.40 1.50
320 9 2.00
410 14.20 2.50
475 16 3.00
NOTE: When this machine leaves the factory, the pump is set at 2.
If after calibration, the flow rate you want results in a pump setting below 2, reduce engine
RPM to approximately 2000 to achieve optimum droplet size.
CAUTION:
Hand tighten nylon fittings. DO NOT use wrenches.

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4. FLUSHING
a. With most chemicals, it is desirable to flush the fluid system and nozzle after each
operation. To flush the system, simply move the selector switch to the FLUSH position
and turn the SPRAY switch to the ON position.
b. With most flushing fluids, a distinct change in the look of the spray will occur once the
flushing fluid has traveled through the whole system and is coming out of the nozzle.
If the spray is not visible, flush for an adequate period of time to get the flushing fluid
completely through the system.

13
SERVICE SCHEDULE
HOURS
Items to be serviced
Daily
25
50
100
500
Check Air Pressure
X
Clean Air Pump Air Filter
X
Check Air Pump Oil Level
X
Change Air Pump Oil
X
Change Air Pump Breather
X
Grease Air Pump Bearings
X
Check Battery
X
Check Engine Oil (Level)
X
Check Engine Oil (SAE-30)
X*
Change Engine Oil (Multi-Viscosity)
X*
Change Oil Filter
X*
Check Engine Air Intake (Finger Guard)
X
Clean Engine Cooling Fins
X
Change Engine Mesh Filter
X
Clean Engine Air Filter
X
Clean Engine Fuel Filter
X
Replace Engine Spark Plug
X
Engine, Decarbonize
X*
Engine Timing
X*
Engine Valve Clearance
X*
Engine Governor
X*
Calibration
A/R
Check All Fittings
X
Clean Formulation Filter
X
Fill Flush Tank
X
Check Pulsation Dampener
X
Check Belt Tension
X
*Refer to engine service manual or authorized service dealer

14
MAINTENANCE
1. AIR PRESSURE
The nozzle air pressure can be checked at the gauge located under the flow control pump box.
Pressure should be approximately 6psi.
Air pressure is controlled mainly by engine speed which should be 2700-3000rpm.
a. Engine speed not correct –see Engine Trouble Shooting, Section X and Governor Maintenance,
Section IV.
b. Engine speed correct –see Air Pump Trouble Shooting, Section X.
2. AIR PUMP AIR FILTER
The air pump filter should be checked and cleaned every 50 hours.
a. Loosen and remove the wing nut, rubber washer and filter outer housing.
b. Clean the inner filter with a solvent, compressed air or other means as necessary.
c. Replace the filter, cover, rubber washer and wing nut.
3. AIR PUMP OIL LEVEL
a. Under normal conditions, the gearbox oil level should be checked
every week or 25 hours, whichever comes first and changed every
120 days or 500 hours, whichever comes first. Use SAE 40 non-
detergent oil.
b. To fill the gearbox or add oil, remove the breather/plug and the
oil level plug fill. Add oil through the breather plug hole until oil
just starts to flow out of the oil level plug hole. Do not overfill.
Replace the breather and oil level plug into their respective holes.
Proper lubrication is the most important single consideration in
obtaining maximum air pump life. Check gearbox oil level and grease
shaft bearing per the maintenance.
4. AIR PUMP BEARINGS
a. The upper and lower shaft bearings at the drive end of the air pump are grease lubricated and
each bearing housing is equipped with a pressure type (zerk) grease fitting. On the bearing
housing –opposite side of the zerk fitting, is a pressure relief fitting that looks like a pipe plug
with a hole drilled through it. It is normal for excess grease to flow out.
b. When servicing drive bearings, use a premium grade, petroleum base grease with high
temperature and moisture resistance and good mechanical stability. Using a pressure gun,
force new lubricant into each drive end bearing housing until traces of grease come out of the
relief fitting.

15
c. After a long shutdown, it is recommended that the grease relief fittings be removed, the old
grease flushed out with kerosene or #10 lubricating oil, drained thoroughly, and bearings
refilled with new grease. Be sure grease relief fittings are reinstalled.
5. AIR PUMP INTERNAL
In salt air or other corrosive type atmospheres, extended periods of non-use (i.e. off-season
storage) the internal parts of the air pump may be protected by removing the air pump inlet filter
and while holding the engine throttle at idle, spray a fine mist of lubricating oil (approximately 2oz.
or 59cc) into the air intake. This will coat and protect the internal parts of the air pump.
6. BATTERY
a. Each week or 100 hours, remove the battery vent caps and check
the electrolyte level. Add clean distilled water, if necessary to
cover the battery plates. Replace the caps.
b. Check the specific gravity. If the specific gravity is between 1.250
and 1.280, the battery cell being tested is OK. If the specific gravity
is between 1.225 and 1.250, the battery cell being tested is still in
FAIR condition. If the specific gravity is below 1.150 in any one cell,
replace the battery. If the specific gravity in one cell is .050 more
or less than the other cells and charging does not bring the charge
to a 50% charge, replace the battery.
NOTE: Recommendation is for a fully sealed marine battery. See page 6 for recommended type.
WARNING
DO NOT JUMP START THE BATTERY WHILE CONNECTED TO THIS MACHINE.
ALWAYS DISCONNECT THE BATTERY AND CHARGE THE BATTERY SEPARATELY.
7. ENGINE OIL LEVEL
BEFORE EACH USE check the oil as follows:
a. Make sure the engine is stopped and resting on a level surface. Also make sure the engine is
cool and the oil has had time to drain into the sump.
b. Clean the area around the dipstick and filler cap to keep dirt and debris out of the engine.
c. Remove the dipstick and wipe the oil off. Reinsert the dipstick and push it all the way down
into the tube. Remove the dipstick and check the level.
d. Add the proper type of oil if the level is low. Bring the level up to, but not over, the “F” mark
on the dipstick before adding more oil.
CAUTION
DO NOT operate the engine with the oil level below the “L” mark or over the “F” mark.

16
8. ENGINE OIL CHANGE
a. For a new engine, change the oil after the first 20 hours of operation, thereafter, change the
oil after every 100 hours of operation.
b. Make sure the engine is stopped and the oil has had time to drain into the sump. Drain oil
while the engine is warm.
c. Remove the oil drain plug and oil fill cap. Tilt the engine slightly towards the oil drain to obtain
better drainage.
d. Reinstall the drain plug. Make sure it is tightened securely.
e. Fill with high quality, detergent SAE 10W-30, service class “SF” oil to the “F” mark on dipstick.
Always check the level on the dipstick before adding more oil.
Reinstall the oil fill cap. Make sure it is tightened securely.
Make sure the engine is level when filling and checking the oil.
f. If changing the oil filter, add oil to the “F” mark on the dipstick and then add ½ pint (76 cc)
extra oil for the oil filter capacity.
g. Start the engine and check for oil leaks.
9. ENGINE OIL FILTER
a. Change the engine oil filter at “each” or “every other” oil change depending on operating
conditions. A genuine Honda oil filter is recommended.
i. Drain crankcase oil, then remove the old filter.
ii. Before installing a replacement filter, apply a thin coating of oil on the surface of
the rubber seal.
iii. Turn filter clockwise until rubber seal contacts the filter adapter, then tighten filter
and additional ½ turn.
b. Refill engine with oil –see Section IX- 8, above. Add an additional .5 pint (284.1 ml) of oil for
the filter capacity.

17
10. ENGINE AIR INTAKE SCREEN
Make sure the air intake screen is clean and unobstructed. If debris builds up on screen during
engine operation, STOP engine immediately and clean off. An obstructed screen can cause engine
overheating.
11. ENGINE COOLING FINS
Every 50 operating hours (more often under extremely dusty or dirty conditions) remove cooling
fins. Also, clean dust, dirt, and oil from external surfaces of engine which can cause improper
cooling. Make sure cooling shrouds are reinstalled. Operating the engine without cooling shrouds
will cause engine damage due to overheating.
12. ENGINE MESH AIR FILTER
This engine is equipped with a high-density wire mesh air cleaner at least once every 25 hours.
a. Remove clipped, air cleaner cover, element cover seals, and element cover.
b. Remove and wash in warm water with detergent.
CAUTION
Damaged or loose components could allow unfiltered air into the engine causing premature wear
and failure.