London Foggers 18-20 User manual

LONDON FOGGERS
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 ON ONE (1) YEAR
COMMENCING WITH DELIVERY OF THE MACHINE TO THE ORIGINAL
USER.
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 or 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, consequential labor costs or transportation
charges in connection with 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 Company. Those parts and products are subject to
warranties of their respective manufactures.
THE WARRANTY EXPRESSED IN LIEU OF ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, STATUTORY OR OTHERWISE, INCLUDING
ANY IMPLIED WARRANTY OF, MERCHANTABILITY OR FITNES S 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.
CUSTOMER SERVICE -A TRADITION

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
Spraying 9
Setting Flow Rate 11
Calibration 11
Flushing 12
VIII. Service Schedule 13
IX. Maintenance
Air Pressure 14
Air Pump/Air Filter 14
Air Pump Oil Level 14
Air Pump Bearings 14
Air Pump Internal 15
Battery 15
Engine Oil 15
Engine Oil Filter 17
Engine Cooling 17
Engine Air Cleaner 18
Engine Fuel Filter 19
Engine Governor 20
Pulsation Damper 20
Formulation/Flushing Filter 20
Belt Guard Alignment 21
X. Trouble Shooting 22
XI. Preparation for Storage 24
XII. Schematic Fluid System 25
XIII. Wiring Diagrams
Engine Wire Diagram 26
Cab Control 27
Pump Housing 28
Parts Breakdown Exploded Views 29-35

I. SPECIFICATIONS
TYPE: Vehicle or trailer mountable -non-thermal, U.L.V. (Ultra Low
Volume) Cold fog aerosol generator.
ENGINE: Twin cylinder Kohler with over head valves, 4-cycle,
gasoline, 18 h.p., 12 V. Fuel Consumption -regular or no
lead automotive 1 gal/hr. Electric start with alternator,
pressure lubrication and oil pressure sensing system.
AIR PUMP: Positive displacement, rotary, cast iron. 2500 RPM, 6 p.s.i.
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 corrosion-resistant, high density polyethylene.
Formulation: 15 U.S. Gallons (56.7 liters)
Flushing: 1.5 U.S. Quarts (1.42 liters)
Gasoline: 6.0 U.S. Gallons (22.7 liters) with cleanable
filter.
PARTICLE SIZE: 80% of droplets less than 20 micron diameter depending on
flow rate and viscosity.
DIMENSIONS: Weight Empty: 460 pounds (209 kilograms)
Length: 46 inches (115 cm)
Width: 33 inches (83 cm)
Height: 27 inches (92)
ENGINE: Power Rating at 3600 RPM: 18 hp (13.4 kw)
Displacement: 38.1 cu. in. (624 cc)
Bore: 3.03 in. (77 mm)
Stroke: 2.64 in. (67 mm)
Compression Ratio: 8.5:1
Oil Capacity (w/filter)*: 2.1 Pt. (2 L)
Spark Plug Type: RV12YC Champion or
Equiv.
Spark Plug Gap: 0.030 in. (.76 mm)
Spark Plug Torque: 18-22 ft.lb. (24.4-29.8 Nm)
BLOWER: Frame Size 45
Maximum RPM: 3000
Maximum Pressure 10 PSI (.014 Kgm2)
Recommended Gear Oil: SAE 40 non-detergent
Gearbox Capacity: 12.7 fl. oz. (0.37 L.)
* For best results, fill the "F" mark on dipstick as opposed to adding a given quantity of oil.
Always check level on dipstick before adding more oil. For engines equipped with oil filter
-an additional 1/2 U.S. pint (.24 L) of oil is required when oil filter is replaced.
(1)

II. SAFETY PRECAUTIONS
WARNING
READ AND UNDERSTAND THESE SAFETY PRECAUTIONS
BEFORE OPERATING MACHINE.
1. ENGINE A ND 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 of gasoline. If spillage occurs, wipe if 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.
DO NOT TAMPER WITH GOVERNOR SPRINGS,
GOVERNOR LINKS OR OTHER PARTS WHICH MAY
INCREASE OR DECREASE THE GOVERNED ENGINE
SPEED.
2. ENGINE SP EED : (RPM) should be checked periodically to ensure that it is operating
correctly as engine speed effects the rate of air flow through the nozzle system which
controls droplet particle size. The correct engine speed should be 1800-3300 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.
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.
(2)

II. SAFETY PRECAUTIONS (continued)
4. MACHINE D AMAGE: 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 OPERATORS RESPONSIBILITY TO
DISCOURAGE ANYONE FROM PLAYING IN THE MIST OR BEING NEAR THE
MOVING VEHICLE.
8. FORMULATIO NS: 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 CONSTRUED THAT THE CHEMICALS AND/OR DOSAGES ARE
THE RECOMMENDATION OF LONDON FOG, INC.
LONDON FOG INC., SHALL IN NO EVENT BE LIABLE FOR CONSEQUENTIAL DAMAGES
OR CONTINGENT LIABILITIES ARISING OUT OF THE FAILURE OF ANY AEROSOL
GENERATOR OR PART TO OPERATE PROPERLY.
(3)

III. 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 any future storage and/or shipment which may be
required.
2. REMOTE CONTROL UNITASSEMBLY:
A. Place the Remote Cab Control Unit where it will not be damaged while
machine is being prepared.
B. Lift the machine onto the vehicle with the discharge end of the machine
toward the rear of the vehicle.
C. 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.
D. 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.
E. 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.
3. INSTALLATION:
A. Securely bolt the machine to the vehicle.
B. Loosen then nozzle swivel joints and orient the nozzle as required by the
formulation label. Usual set up is towards the rear and 45 degrees up.
Retighten joints.
C. Correct battery type is 24/24m series with marine style wing nut
terminals.
(4)

III. ASSEMBLY/INSTALLATION (continued)
4. BATTERY INSTALLATION:
A. New (Dry) Battery.
(i) Remove the battery from its box and place it on a stable work
surface in a well ventilated area.
(ii) Remove vent caps for battery. Remove or destroy any sealing
devise which may have been used to close or restrict the vent
openings in the caps.
(iii) Fill each cell of the battery to the top of the separators with
approved battery electrolyte of 1.265 specific gravity.
Temperature of battery and electrolyte at the time of filling should
be above 60 degrees F. (15 degrees C.)
CAUTION:
Never fill battery in machine as spills will damage finish on frame
and cause premature corrosion.
(iv) Charge 12 Volt battery at 30-40 amps until the acid temperature is
above 80 degrees F. (26 degrees C.) and the hydrometer reading
is 1.250 or higher.
Both temperature and hydrometer reading requirements must be
met.
(v) After charging the battery, check acid levels in all cells and fill
each cell with acid to the proper level.
(vi) Re-install vented caps.
(vii) Re-install the battery onto machine.
(viii) Connect positive (+) cable (leading from the starter solenoid which
is located on the engine) to the positive (+) post on the battery and
tighten bolt.
(ix) Connect the negative (-) cable to the negative (-) post on the
battery and tighten bolt.
NOTE: After battery has been initially serviced, only water
should be added to restore the liquid level in each
cell. Further addition of acid will cause battery
failure.
B. Wet (Sealed) Battery:
(i) When installing battery, connect the negative (-) cable last to
prevent sparking and shorting.
(ii) When disconnecting is required, remove negative (-) connection
first.
(iii) Reversed polarity can cause damage to the starting and charging
systems.
(5)

IV. SERVICE BEFORE START-UP
1. ENGINE
A. Gasoline -Service the engine with gas and oil. For 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 VIII).
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 oil through the oil fill tube to bring the
level up to, but not over, the "F" mark.
CAUTION:
DO NOT operate the engine with oil level below
the "L" mark or over the "F" mark.
2. BLOWER
A. Before starting machine, be sure the gearbox on the blower is filled to the
proper level with oil.
B. To fill the gearbox, remove the combination breather/knob on the top side
of the gear box and also remove the lower 1/4" pipe plug (called the
overflow hole) which is on the air filter side of the gear box.
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. FORMULATIO N
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 appropriate flushing fluid (for the
formulation being used) in the flushing tank.
(6)

V. PR E-START CHECKLIST
SEE
SECTION #
All safety equipment is in place _____ I.
Remote control panel 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.
(7)

VI . STA R T-UP / SHUTDO WN
1. Be sure to complete the service before start-up: pre-start check list and all safety
precautions, before starting 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 it's 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
A. Control Panel
To turn off the engine move the stop switch to the "OFF" position.
(8)

VI I. O PER A TIO N
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
PREPARING TO DISPENSE FORMULATION.
READ AND THOROUGHLY UNDERSTAND ALL 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.
(9)

VII. OPERATION (continued)
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 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
4.0 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
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.
D. Lock the pointer handle at the desired flow rate setting by tightening the
two knurled rings. DO NOT OVER TIGHTEN. Do not use any
additional wrenches. Hand tighten only.
E. Close the pump box Close the pump box fasten latches.
3. CALIBR ATIO N
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 spray nozzle and no
air is trapped in the lines.
C. Remove the fluid line from the formulation tank and insert it into a
1000 ml. graduated cylinder filled with your formula.
(11)

VII. OPERATION (Continued)
D. With the engine running, turn the spray switch "ON" for a measured
amount of time using a stop watch. Record the flow rate and pump
setting for future reference.
E. Loosen the pump pointer locking plate by loosing the two knurled nuts
and adjust 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 .50
150 5 1.00
250 8.40 1.50
320 10 2.00
410 14.20 2.50
475 16 3.00
NOTE: When this machine leaves the factory the pump is set at 1.
If after calibration, the flow rate you want results in a pump
setting below 1, reduce engine RPM to approximately 2000
to achieve optimum droplet size.
CAUTION:
Hand tighten nylon fittings. DO NOT use wrenches.
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 looks of the spray will
occur once the flushing fluid has traveled through the whole system and
is coming out the nozzle. If the spray is not visible, flush for an adequate
period of time to get the flushing fluid completely through the system.
(12)

VI II . S ER VICE SCHED ULE

IX. MAINTENANCE
1. AIR PRESSURE
The nozzle air pressure can be checked at the gauge located on the flow control pump
box. Pressure should be approximately 6 psi (.008 kgm2).
Air pressure is controlled mainly by engine speed which should be 2700-3000 RPM.
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 air 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 gear box 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 gear box oil level and grease shaft
bearing per the maintenance.
4. AIR PUMP BEARINGS
A. 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.
(14)

IX. MAINTENANCE (continued)
B. When servicing drive end 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 comes out of the
relief fitting.
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.
6. 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 2 oz. or 59 cc) into the air intake. This will coat and
protect the internal parts of the air pump.
7. 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 0.050
more or less than the other cells and
charging does not bring the charge to
a 50% charge, replace the battery.
8. ENGINE O IL 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.
(15)

IX. MAINTENANCE (continued)
C. Remove the dipstick and wipe oil off. Reinsert the dipstick and push it all the way
down into 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 "L" mark or over "F" mark.
9. ENGINE O I L CHA NGE
A. For a new engine, change oil after the first 5 hours of operation,
thereafter, change 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 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 the 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 oil.
F. If changing the oil filter, add oil to the "F" mark on the dipstick and then
add 1/2 pint (76 cc) extra oil for the oil filter capacity.
G. Start the engine and check for oil leaks.
(16)

IX. MAINTENANCE (continued)
10. ENGINE O IL FILTER
A. Change the engine oil filter at "each" or "every other" oil change
depending on operating conditions A genuine Kohler oil filter is
recommended.
(i) Drain crankcase oil, then remove old filter.
(ii) Before installing 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 1/2 turn.
B. Refill engine with oil -see section IX -9 , above. Add an additional 1/2
pint (76 cc) of oil for the filter capacity.
11. ENGINE A I R I NTA KE S CR EEN
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.
12. ENGINE CO O LI NG FI NS
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.
13. ENGINE A I R FO A M P R ECLEA NER
This engine is equipped with a high density paper air cleaner and an oiled foam
precleaner which surrounds the paper element. Wash and re-oil the foam precleaner at
least once every 25 hours.
A. Remove wing nut, air cleaner cover, element cover seals, and element
cover.
B. Remove precleaner from paper element. Wash the precleaner in warm
water with detergent.
(17)