Kohler SV470-620 User manual

OWNER'SMANUAL
VERTICAL CRANKSHAFT
COURAGE SV470-620

2
Safety Precautions
To ensure safe operation please read the following statements and understand their meaning. Also refer
to your equipment owner's manual for other important safety information. This manual contains safety
precautions which are explained below. Please read carefully.
WARNING
Warning is used to indicate the presence of a hazard that can cause severe personal injury, death, or
substantial property damage if the warning is ignored.
CAUTION
Caution is used to indicate the presence of a hazard that will or can cause minor personal injury or
property damage if the caution is ignored.
NOTE
Note is used to notify people of installation, operation, or maintenance information that is
important but not hazard-related.
For Your Safety!
Theseprecautionsshouldbefollowedatalltimes.Failuretofollowtheseprecautionscouldresultininjurytoyourself
andothers.
Explosive Fuel!
Gasolineisextremelyflammableandits
vaporscan explode if ignited.Store
gasolineonly in approved containers,in
wellventilated, unoccupied buildings,
awayfrom sparks or flames. Do not fill
the fuel tank while the engine is hot or
running,since spilled fuelcouldignite if
itcomes in contact withhot parts or
sparksfrom ignition.Donot start the
enginenear spilled fuel. Never use
gasoline as a cleaning agent.
Rotating Parts!
Keephands, feet, hair, and clothing away
fromall moving partsto prevent injury.
Neveroperate the engine with covers,
shrouds,orguards removed.
HotParts!
Enginecomponents can get extremely hot
fromoperation.Topreventsevere burns,
do not touch these areas while the engine
isrunning,or immediatelyafter itis
turnedoff. Never operate the engine with
heatshields or guardsremoved.
Engineexhaust fromthisproduct
containschemicals known to the State
ofCalifornia to cause cancer,birth
defects,orother reproductiveharm.
California
Proposition 65 Warning
ExplosiveFuelcan cause firesand
severe burns.
Do not fill the fuel tank while the
engine is hot or running.
WARNING
Rotating Parts can cause severe
injury.
Stay away while engine is in
operation.
WARNING
Hot Parts can cause severe burns.
Do not touch engine while operating
or just after stopping.
WARNING
ElectricalShockcancauseinjury.
Do not touch wires while engine is
running.
CAUTION
Electrical Shock!
Nevertouch electricalwiresor
componentswhile the engineisrunning.
Theycan be sources of electrical shock.

3
Safety Precautions (Cont.)
Lethal Exhaust Gases!
Engineexhaust gases contain poisonous
carbonmonoxide. Carbonmonoxide is
odorless,colorless, and can cause death if
inhaled.Avoid inhaling exhaust fumes,
andnever run the engine in a closed
buildingor confinedarea.
Accidental Starts!
Disablingengine. Accidental starting
cancausesevereinjuryordeath.
Beforeworkingontheengineor
equipment,disablethe engine as follows:
1)Disconnect the spark plug lead(s). 2)
Disconnectnegative (-) batterycablefrom
battery.
ExplosiveGas!
Batteriesproduce explosive hydrogen gas
whilebeing charged.Toprevent a fireor
explosion,charge batteries only in well
ventilatedareas. Keep sparks,open
flames,and other sources of ignition
awayfromthe battery at all times. Keep
batteriesout of the reach of children.
Remove all jewelry when servicing
batteries.
Beforedisconnecting the negative
(-)ground cable, make sure all switches
areOFF.If ON, a spark will occurat the
groundcable terminal which could cause
an explosion if hydrogen gas or gasoline
vaporsarepresent.
AccidentalStarts can causesevere
injuryor death.
Disconnect and ground spark plug
lead before servicing.
WARNING
CarbonMonoxide can cause severe
nausea,fainting ordeath.
Avoid inhaling exhaust fumes, and
never run the engine in a closed
building or confined area.
WARNING WARNING
ExplosiveGascan causefiresand
severeacid burns.
Charge battery only in a well
ventilated area. Keep sources of
ignition away.
Congratulations – You have selected a fine four-cycle, single cylinder, air-cooled engine. Kohler designs long
life strength and on-the-job durability into each engine…making a Kohler engine dependable…dependability
you can count on. Here are some reasons why:
• Efficient twin cam, overhead valve design with full pressure lubrication, provides maximum power,
torque, and reliability under all operating conditions.
• Dependable, maintenance free electronic ignition ensures fast, easy starts time after time.
• A reciprocating balance system ensures smooth running and low vibration.
• Kohler engines are easy to service. All routine service areas (like the dipstick and oil fill, air cleaner, and
carburetor) are easily and quickly accessible.
• Parts subject to the most wear and tear (like the cylinder liner) are made from precision formulated cast
iron for longer life.
• Every Kohler engine is backed by a worldwide network of over 10,000 distributors and dealers. Service
support is just a phone call away. Call 1-800-544-2444 (U.S. & Canada) for Sales & Service assistance.
To keep your engine in top operating condition, follow the maintenance procedures in this manual.

4
Figure 1. Typical COURAGE®Series Vertical Shaft Engine.
Oil Recommendations
Using the proper type and weight of oil in the
crankcase is extremely important. So is checking oil
daily and changing oil regularly. Failure to use the
correct oil, or using dirty oil, causes premature engine
wear and failure.
Oil Type
Use high quality detergent oil of API (American
Petroleum Institute) service class SG, SH, SJ or
higher. Select the viscosity based on the air
temperature at the time of operation as shown in the
following table.
Figure 2. Viscosity Grades Table.
NOTE: Using other than service class SG, SH, SJ or
higher oil or extending oil change intervals
longer than recommended can cause engine
damage.
NOTE: Synthetic oils meeting the listed
classifications may be used with oil changes
performed at the recommended intervals.
However to allow piston rings to properly
seat, a new or rebuilt engine should be
operated for at least 50 hours using standard
petroleum based oil before switching to
synthetic oil.
*Use of synthetic oil having 5W-20 or 5W-30 rating is
acceptable, up to 4°C (40°F).
**Synthetic oils will provide better starting in extreme cold
below -23°C (-10°F).
**
Figure 3. Oil Container Logo.
Refer to Maintenance Instructions beginning on page
8 for detailed oil check, oil change, and oil filter
change procedures.
Fuel Recommendations
WARNING: Explosive Fuel!
Gasolineis extremely flammable and its vapors can explode if
ignited.Store gasoline only in approvedcontainers, in well
ventilated,unoccupied buildings, awayfrom sparks or flames.
Do not fill the fuel tank while the engine is hot or running,
sincespilled fuel could ignite if it comes in contact with hot
partsor sparksfromignition. Donotstart the enginenear
spilled fuel. Never use gasoline as a cleaning agent.
General Recommendations
Purchase gasoline in small quantities and store in
clean, approved containers. A container with a
capacity of 2 gallons or less with a pouring spout is
recommended. Such a container is easier to handle
and helps eliminate spillage during refueling.
Do not use gasoline left over from the previous season,
to minimize gum deposits in your fuel system and to
ensure easy starting.
Do not add oil to the gasoline.
Do not overfill the fuel tank. Leave room for the fuel to
expand.
Blower Housing
Air Cleaner
Oil Fill/Dipstick
Oil Filter
Oil Drain Plug
Electric Starter
Main Control
Bracket
Blower Housing
Engine Identification Label
Carburetor
*
A logo or symbol on oil containers identifies the API
service class and SAE viscosity grade. See Figure 3.

5
Fuel Type
For best results use only clean, fresh, unleaded
gasoline with a pump sticker octane rating of 87 or
higher. In countries using the Research method, it
should be 90 octane minimum.
Unleaded gasoline is recommended as it leaves less
combustion chamber deposits. Leaded gasoline may
be used in areas where unleaded is not available and
exhaust emissions are not regulated. Be aware
however, that the cylinder heads may require more
frequent service.
Gasoline/Alcohol blends
Gasohol (up to 10% ethyl alcohol, 90% unleaded
gasoline by volume) is approved as a fuel for Kohler
engines. Other gasoline/alcohol blends including E20
and E85 are not to be used and not approved. Any
failures resulting from use of these fuels will not be
warranted.
Gasoline/Ether blends
Methyl Tertiary Butyl Ether (MTBE) and unleaded
gasoline blends (up to a maximum of 15% MTBE by
volume) are approved as a fuel for Kohler engine.
Other gasoline/ether blends are not approved.
Engine Identification Numbers
When ordering parts, or in any communication
involving an engine, always give the Model,
Specification, and Serial Numbers of the engine.
The engine identification numbers appear on a decal
affixed to the engine shrouding. Include letter suffixes,
if there are any.
Record your engine identification numbers on the
identification label (Figure 4) for future reference. Figure 4. Engine Identification Label.
The Emission Compliance Period referred to on the
Emission Control or Air Index label indicates the
number of operating hours for which the engine has
been shown to meet Federal and CARB emission
requirements. The following table provides the Engine
Compliance Period (in hours) associated with the
category descriptor found on the certification label.
Emission Compliance Period (Hours)
Refer to certification label for engine displacement.
Exhaust Emission Control System for models
SV470-SV620 is EM for U.S. EPAand Europe; PAIR for
California Tier III.
EPA
CARB
Category C
250 Hours
Moderate
125 Hours
Category B
500 Hours
Intermediate
250 Hours
Category A
1000 Hours
Extended
500 Hours
IMPORTANTENGINEINFORMATION
THISENGINEMEETSU.S.EPAPH2ANDECSTAGEII(SN:4)
EMISSIONREGSFORSISORE.NOTFORSALEINCALIFORNIA
UNLESSPREEMPTPERSEC. 209 (e) (1) OFCAA.
KOHLER CO. KOHLER, WISCONSIN USA
EMISSIONCOMPLIANCEPERIOD:
EPA: CARB:
CERTIFIEDON:
REFERTOOWNER'SMANUALFORHPRATING, SAFETY,
MAINTENANCEANDADJUSTMENTS
FAMILY
TYPEAPP
DISPL.(CC)
MODELNO.
SPEC.NO.
SERIALNO.
BUILDDATE
OEMPROD.NO.
1-800-544-2444 KohlerEngines.com
N11236
IMPORTANTENGINEINFORMATION
THISENGINE MEETSU.S.EPAPH2ANDCA2008ANDLATER
EXHEMISSIONREGSFORSISORE.USINGDELEGATED
ASSEMBLYFORAFTERTREATMENT.
KOHLER CO. KOHLER, WISCONSIN USA
EMISSIONCOMPLIANCEPERIOD:
EPA: CARB:
CERTIFIEDON:
REFERTOOWNER'S MANUALFOR HPRATING, SAFETY,
MAINTENANCEANDADJUSTMENTS
FAMILY
TYPEAPP
DISPL.(CC)
MODELNO.
SPEC.NO.
SERIALNO.
BUILDDATE
OEMPROD.NO.
N11236
1-800-544-2444 KohlerEngines.com

6
Pre-Start Checklist
• Check oil level.Add oil if low. Do not overfill.
• Check fuel level.Add fuel if low.
• Check cooling air intake areas and external
surfaces of engine. Make sure they are clean and
unobstructed.
• Check that the air cleaner components and all
shrouds, equipment covers, and guards are in
place and securely fastened.
• Check that any clutches or transmissions are
disengaged or placed in neutral. This is especially
important on equipment with hydrostatic drive.
The shift lever must be exactly in neutral to
prevent resistance which could keep the engine
from starting.
WARNING: Lethal Exhaust Gases!
Engineexhaust gases contain poisonous carbonmonoxide.
Carbonmonoxide is odorless, colorless, and can cause death if
inhaled.Avoid inhaling exhaust fumes, and never run the
enginein a closed buildingorconfined area.
Cold Weather Starting Hints
1. Be sure to use the proper oil for the temperature
expected. See Figure 2 on page 4.
2. Declutch all possible external loads.
*Horsepower ratings exceed Society of Automotive Engineers Small Engine Test Code J1940. Actual engine
horsepower is lower and affected by, but not limited to, accessories (air cleaner, exhaust, charging, cooling, fuel
pump, etc.), application, engine speed and ambient operating conditions (temperature, humidity, and altitude).
Kohler reserves the right to change product specifications, designs and equipment without notice and without
incurring obligation.
Figure 5. Throttle Position for Starting Engine with
Single-Lever Control.
Model:............................................................. SV590 ................ SV600 ................ SV610 ................ SV620
Bore:................................. mm (in.) ............. 94 (3.7) ............... 94 (3.7) ............... 94 (3.7) ............... 94 (3.7)
Stroke: ............................. mm (in.) ............. 86 (3.4) ............... 86 (3.4) ............... 86 (3.4) ............... 86 (3.4)
Displacement:.............. cc (cu. in.) ............. 597 (36.4)........... 597 (36.4)........... 597 (36.4)........... 597 (36.4)
Power (at 3600 RPM): .. kW (HP) ............. 14.2 (19*) ........... 14.9 (20*) ........... 15.7 (21*) ........... 16.4 (22*)
Compression Ratio:..................................... 8.5:1.................... 8.5:1.................... 8.5:1.................... 8.5:1
Weight:................................kg (lb.) ............. 35.8 (79) ............. 35.8 (79) ............. 35.8 (79)............. 35.8 (79)
Oil Capacity w/filter: L (U.S. qt.) ............. 1.5 (1.6) .............. 1.5 (1.6) .............. 1.5 (1.6) .............. 1.5 (1.6)
Lubrication: .................................................. ---------------- Full Pressure w/Full Flow Filter --------------
3. A warm battery has much more starting
capacity than a cold battery.
4. Use fresh winter grade fuel. NOTE: Winter grade
gasoline has higher volatility to improve
starting. Do not use gasoline left over from
summer.
Starting
1. a. For a Single-Lever Throttle/Choke Control:
Place the lever into fast/choke on position.
See Figure 5.
b. For Separate Levers: Place the throttle
control midway between the slow and
fast positions. Place the choke control into
the on position.
Specifications
Model:............................................................. SV470 ................ SV480 ................ SV530 ................ SV540
Bore:................................. mm (in.) ............. 89 (3.5) ............... 89 (3.5) ............... 89 (3.5) ............... 89 (3.5)
Stroke: ............................. mm (in.) ............. 86 (3.4) ............... 86 (3.4) ............... 86 (3.4) ............... 86 (3.4)
Displacement:.............. cc (cu. in.) ............. 535 (32.6)........... 535 (32.6)........... 535 (32.6)........... 535 (32.6)
Power (at 3600 RPM): .. kW (HP) ............. 11.2 (15*) ........... 11.9 (16*) ........... 12.7 (17*) ........... 13.4 (18*)
Compression Ratio:..................................... 8.5:1.................... 8.5:1.................... 8.5:1.................... 8.5:1
Weight:................................kg (lb.) ............. 35.8 (79)............. 35.8 (79)............. 35.8 (79)............. 35.8 (79)
Oil Capacity w/filter: L (U.S. qt.) ............. 1.5 (1.6) .............. 1.5 (1.6) .............. 1.5 (1.6) .............. 1.5 (1.6)
Lubrication: .................................................. ---------------- Full Pressure w/Full Flow Filter --------------
Operating Instructions
Alsoread theoperatinginstructions of theequipment this enginepowers.

7
b. For engines equipped with a shutdown
solenoid: Position the throttle control
between half and full throttle; then stop the
engine.
Battery
A 12 volt battery is normally used. Refer to the
operating instructions of the equipment this engine
powers, for specific battery requirements.
If the battery charge is not sufficient to crank the
engine, recharge the battery (see page 11).
Operating
Angle of Operation
This engine will operate continuously at angles up to
25°. Check oil level to assure crankcase oil level is at
the “F” mark on the dipstick.
Refer to the operating instructions of the equipment
this engine powers. Because of equipment design or
application, there may be more stringent restrictions
regarding the angle of operation.
NOTE: Do not operate this engine continuously at
angles exceeding 25° in any direction. Engine
damage could result from insufficient
lubrication.
Cooling
NOTE: If debris builds up on the grass screen or
other cooling air intake areas, stop the engine
immediately and clean. Operating the engine
with blocked or dirty air intake and cooling
areas can cause extensive damage due to
overheating.
WARNING: Hot Parts!
Enginecomponents can get extremelyhotfromoperation. To
preventsevere burns, do not touch these areas while the engine
isrunning–or immediatelyafter itis turnedoff.Never operate
theengine with heat shields or guards removed.
Engine Speed
NOTE: Do not tamper with the governor setting to
increase the maximum engine speed.
Overspeed is hazardous and will void the
engine warranty.
2. Make sure the equipment is in neutral.
3. Activate the starter switch. Release the switch as
soon as the engine starts.
NOTE: Do not crank the engine continuously for
more than 10 seconds at a time. If the
engine does not start, allow a 60 second
cool down period between starting
attempts. Failure to follow these
guidelines can burn out the starter
motor.
NOTE: If the engine develops sufficient speed to
disengage the starter but does not keep
running (a false start), engine rotation
must be allowed to come to a complete
stop before attempting to restart the
engine. If the starter is engaged while the
flywheel is rotating, the starter pinion
and flywheel ring gear may clash,
resulting in damage to the starter.
If the starter does not turn the engine over, shut
off starter immediately. Do not make further
attempts to start the engine until the condition is
corrected. Do not jump start using another
battery (refer to Battery). See your Kohler Engine
Service Dealer for trouble analysis.
4. For Operation - after the engine starts:
a. For a Single-Lever Throttle/Choke Control:
Move the lever from the fast/choke on
position and set the desired engine operating
speed (between the slow and fast position).
b. For Separate Levers: Gradually move the
choke control to the off position. If the
engine is warm, the choke control can be
returned to the off position as soon as the
engine starts. If the engine is cold, it may be
operated during the warm-up period, but it
may be necessary to leave the choke partially
on until the engine warms up.
Stopping
1. Remove the load by disengaging all PTO
attachments.
2. a. For engines without a shutdown solenoid:
Move the throttle to the slow or low idle
position. Allow the engine to run at idle for
30-60 seconds; then stop the engine.

8
Maintenance Instructions
Maintenance, repair, or replacement of the emission control devices and systems, which are being done at the
customers expense, may be performed by any non-road engine repair establishment or individual. Warranty
repairs must be performed by an authorized Kohler service outlet.
WARNING: Accidental Starts!
Disablingengine. Accidental starting can causesevereinjuryordeath.Before workingonthe engine or equipment, disable
theengineas follows: 1) Disconnect the spark plug lead(s). 2) Disconnect negative (-) battery cable from battery.
Maintenance Schedule
These required maintenance procedures should be performed at the frequency stated in the table. They should
also be included as part of any seasonal tune-up.
Check Oil Level
The importance of checking and maintaining the
proper oil level in the crankcase cannot be
overemphasized. Check oil BEFORE EACH USE as
follows:
1. Make sure the engine is stopped, level, and is cool
so the oil has had time to drain into the sump.
2. To keep dirt, grass clippings, etc., out of the
engine, clean the area around the oil fill cap/
dipstick before removing it.
3. Pull and remove the oil fill cap/dipstick; wipe oil
off. Reinsert the dipstick and push firmly into
place. See Figure 6.
¹Performthesemaintenance proceduresmore frequentlyunder extremelydusty,dirtyconditions.
²Havea Kohler EngineServiceDealer perform this service.
Figure 6. Checking Oil Level.
4. Remove the dipstick and check the oil level.
The oil level should be up to, but not over, the “F”
mark on the dipstick. See Figure 7.
Removing
Dipstick
Dipstick Seated
Daily or Before
Starting Engine
Maintenance RequiredFrequency
• Fill fuel tank.
• Check oil level.
• Check air cleaner for dirty¹, loose, or damaged parts.
• Check air intake and cooling areas, clean as necessary¹.
Every 2 Months
or 25 Hours • Service precleaner element¹ (if equipped).
• Service air cleaner element¹ (if not equipped with precleaner).
• Replace air cleaner element¹ (if equipped with precleaner).
• Change oil and filter (refer to Viscosity Table, Page 4, based on seasonal
temperatures).
• Remove blower housing and clean cooling areas.
• Check that all fasteners are in place and components are properly secured.
• Replace fuel filter.
• Have bendix starter drive serviced².
• Have valve lash checked/adjusted2.
Every 200 Hours
Annually or
Every 100 Hours
Every 500 Hours • Replace spark plug.
• Check spark plug condition and gap.
Every 2 Years or
200 Hours

9
Figure 7. Oil Level Dipstick.
5. If the level is low, add oil of the proper type, up to
the “F” mark on the dipstick. (Refer to Oil Type on
page 4.) Always check the level with the dipstick
before adding more oil.
NOTE: To prevent extensive engine wear or
damage, always maintain the proper oil
level in the crankcase. Never operate the
engine with the oil level below the “L”
mark or over the “F” mark on the
dipstick.
Oil Sentry™
Some engines are equipped with an optional Oil
Sentry™ oil pressure switch. See Figure 8. If the oil
pressure decreases below an acceptable level, the Oil
Sentry™ will either activate a warning signal or shut
off the engine, depending on the application.
NOTE: Make sure the oil level is checked BEFORE
EACH USE and is maintained up to the “F”
mark on the dipstick. This includes engines
equipped with Oil Sentry™.
Change Oil and Filter
Change the oil and oil filter annually or every 100
hours of operation. Refill with service class SG, SH, SJ
or higher oil as specified in the Viscosity Grades table
(Figure 2) on page 4.
Change the oil and filter while the engine is still warm.
The oil will flow more freely and carry away more
impurities. Make sure the engine is level when filling,
checking, or changing the oil. Always use a genuine
Kohler oil filter. Use chart below to determine part
number to order.
Operating
Range
“F” Mark
2. Remove the oil drain plug and oil fill cap/dipstick.
Be sure to allow ample time for complete drainage.
3. Remove the old filter and wipe off the mounting
pad.
4. Reinstall the drain plug. Make sure it is tightened
to 14 N·m (125 in. lb.) torque.
5. Place the new replacement filter in a shallow pan
with the open end up. Pour new oil of the proper
type, in through the threaded center hole. Stop
pouring when the oil reaches the bottom of the
threads. Allow a minute or two for the oil to be
absorbed by the filter material.
6. Apply a thin film of clean oil to the rubber gasket
on the new filter.
7. Install the replacement oil filter to the mounting
pad. Turn the oil filter clockwise until the rubber
gasket contacts the pad, then tighten the filter an
additional 3/4 to 1 turn.
8. Fill the crankcase, with new oil of the proper type,
to the “F” mark on the dipstick. Refer to Oil Type on
page 4. Always check the level with the dipstick
before adding more oil.
9. Reinstall the oil fill cap/dipstick and push firmly
into place.
10. Test run the engine to check for leaks. Stop the
engine, allow a minute for the oil to drain down,
and recheck the level on the dipstick. Add more oil,
as necessary, so the oil level is up to but not over
the “F” mark on the dipstick.
NOTE: To prevent extensive engine wear or
damage, always maintain the proper oil
level in the crankcase. Never operate the
engine with the oil level below the “L”
mark or over the “F” mark on the dipstick.
Figure 8. Oil Drain Plug, Oil Filter, and Optional Oil
Sentry™ Switch.
Oil Drain Plug
Oil Filter
Oil Filter Part No.
12050 01-S
52050 02-S
Length
2-1/2"
3-3/8"
Change the oil and oil filter as follows (see Figure 8):
1. To keep dirt, grass clippings, etc., out of the
engine, clean the area around the oil fill cap/
dipstick before removing it.
Oil Sentry™(Behind
Blower Housing)

10
Service Precleaner and Air Cleaner Element
This engine is equipped with a replaceable, high
density paper air cleaner element. Some engines are
also equipped with an oiled, foam precleaner, located
in the outer air cleaner cover. See Figure 9.
Check the air cleaner daily or before starting the
engine. Check for a buildup of dirt and debris around
the air cleaner system. Keep this area clean. Also check
for loose or damaged components. Replace all bent or
damaged air cleaner components.
NOTE: Operating the engine with loose or damaged
air cleaner components could allow
unfiltered air into the engine causing
premature wear and failure.
Figure 9. Air Cleaner Assembly - Details.
Service Precleaner
If so equipped, wash and reoil the precleaner
every two months or every 25 hours of operation,
(more often under extremely dusty or dirty
conditions).
1. Loosen the air cleaner cover knobs and remove
the cover. See Figure 9.
2. Remove the precleaner.
3. Wash the precleaner in warm water with
detergent. Rinse the precleaner thoroughly until
all traces of detergent are eliminated. Squeeze out
excess water (do not wring). Allow the precleaner
to air dry.
4. Saturate the precleaner with new engine oil.
Squeeze out all excess oil.
5. Reinstall the precleaner into the upper section of
the air cleaner cover. Make sure hole in precleaner
is aligned with the upper mounting knob.
6. Reinstall the air cleaner cover and secure with
the two knobs.
7. When precleaner replacement is necessary order
genuine Kohler Part No. 20 083 03-S.
Service Paper Element
Check the paper element every two months or every 25
hours of operation, (more often under extremely dusty
or dirty conditions). Clean or replace the element as
necessary. Replace the air cleaner element annually, or
every 100 hours.
1. Remove the air cleaner cover and the precleaner (if
so equipped), service as required. See Figure 9.
2. Remove the air cleaner element with the integral
rubber seal. See Figure 10.
Air Cleaner
Element
Precleaner
(some models)
Cover
Air Cleaner Cover
Knobs
Figure 10. Removing Air Cleaner Element.
3. Gently tap the pleated side of the paper element
to dislodge dirt. Do not wash the paper element
or use pressurized air, as this will damage the
element. Replace a dirty, bent, or damaged
element with a genuine Kohler element. Handle
new elements carefully; do not use if the rubber
seal is damaged.
4. Clean all air cleaner components of any
accumulated dirt or foreign material. Prevent
any dirt from entering the throat of carburetor.
5. Install the air cleaner element with the pleated
side “out” and seat the rubber seal onto the edges
of the air cleaner base. See Figure 11.
6. Reinstall the precleaner (if so equipped), into the
upper section of the air cleaner cover. Make sure
the hole in precleaner is aligned with the upper
mounting knob. See Figure 9.
7. Reinstall the air cleaner cover and secure with
the two knobs. See Figure 9.
8. When element replacement is necessary, order
Kohler Part No. 20 083 02-S.
Air Cleaner Element
with Rubber Seal

11
Figure 11. Installing Air Cleaner Element.
Clean Air Intake/Cooling Areas
To ensure proper cooling, make sure the grass screen,
cooling fins, and other external surfaces of the engine
are kept clean at all times.
Annually or every 100 hours of operation (more often
under extremely dusty, dirty conditions), remove
the blower housing and any other cooling shrouds.
Clean the cooling fins and external surfaces as
necessary. Make sure the cooling shrouds are
reinstalled. Torque the blower housing screws to
7.5 N·m (65 in. lb.).
NOTE: Operating the engine with a blocked grass
screen, dirty or plugged cooling fins, and/or
cooling shrouds removed, will cause engine
damage due to overheating.
Ignition System
This engine is equipped with a dependable electronic
CD ignition system. Other than periodically checking/
replacing the spark plug, no maintenance, timing, or
adjustments are necessary or possible with this
system.
In the event starting problems should occur which are
not corrected by replacing the spark plug, see your
Kohler Engine Service Dealer for trouble analysis.
Check Spark Plug
Every 2 years or 200 hours of operation, remove the
spark plug, check condition, and reset the gap or
replace with a new plug as necessary. The standard
spark plug is a Champion®RC12YC (Kohler Part No.
12 132 02-S). RFI compliant engines use a Champion®
QC12YC (Kohler Part No. 20 132 02-S) spark plug. A
high-performance spark plug, Champion®Platinum
3071 (Kohler Part No. 25 132 12-S) is also available.
Equivalent alternate brand plugs can also be used.
Spark plug replacement is recommended at 500 hours.
1. Before removing the spark plug, clean the area
around the base of the plug to keep dirt and
debris out of the engine.
Due to the deep recess around the spark plug,
blowing out the cavity with compressed air is
usually the most effective method for cleaning.
The spark plug is most accessible when the
blower housing is removed for cleaning.
2. Remove the plug and check its condition. Replace
the plug if worn or reuse is questionable.
NOTE: Do not clean the spark plug in a machine
using abrasive grit. Some grit could
remain in the spark plug and enter the
engine causing extensive wear and
damage.
3. Check the gap using a wire feeler gauge. Adjust
the gap by carefully bending the ground
electrode. See Figure 12. Gap plugs to 0.76 mm
(0.030 in.).
4. Reinstall the spark plug into the cylinder head.
Torque the spark plug to 24-30 N·m (18-22 ft. lb.).
5. Reconnect the spark plug lead and reinstall the
blower housing, if removed previously. Torque
the blower housing screws to 7.5 N·m (65 in. lb.).
Figure 12. Servicing Spark Plug.
Battery Charging
WARNING: Explosive Gas!
Batteriesproduce explosive hydrogen gas while being charged.
To preventa fire or explosion, chargebatteries only in well
ventilatedareas. Keep sparks, open flames, andothersources of
ignitionaway from the battery at all times. Keep batteries out of
thereach of children. Remove all jewelry when servicing
batteries.
Beforedisconnecting the negative (-) ground cable, makesureall
switchesareOFF. If ON, asparkwill occur at the groundcable
terminalwhichcouldcausean explosion if hydrogen gas or
gasolinevapors are present.
Wire Gauge
Ground
Electrode
Spark Plug
0.76 mm
(0.030 in. )
Gap

12
Fuel Filter
Some engines are equipped with an in-line fuel filter.
Periodically inspect the filter and replace when dirty.
Replacement is recommended annually or every 100
hours. Use a genuine Kohler filter.
Fuel Line
In compliance with CARB Tier III Emission
Regulations, engines with a Family identification
number beginning with “6” or greater (see Figure 13),
must use Low Permeation SAE 30 R7 rated fuel line;
certified to meet CARB requirements. Standard fuel
line may not be used. Order replacement hose by part
number through a Kohler Engine Service Dealer.
Figure 13. Family Number Location.
Carburetor Troubleshooting and
Adjustments
NOTE: Carburetor adjustments should be made
only after the engine has warmed up.
These engines are equipped with a Walbro fixed main
jet carburetor. See Figure 14. Walbro carburetors have
a low idle speed adjustment screw, and either a fixed
or low idle fuel adjusting needle with a limiter cap.
The carburetor is designed to deliver the correct fuel-
to-air mixture to the engine under all operating
conditions. The main fuel jet is calibrated at the
factory and is not adjustable. The low idle fuel
adjusting needle is also set at the factory and
normally does not need adjustment.
NOTE: To ensure correct engine operation at
altitudes above 1525 meters (5000 ft.), it may
be necessary to have an authorized Kohler
dealer install a special high-altitude jet kit in
the carburetor. If a high-altitude kit has been
installed, the engine must be reconverted to
the original jet size, before it is operated at
lower altitudes, or overheating and engine
damage can result.
Troubleshooting
If engine troubles are experienced that appear to be
fuel system related, check the following areas before
adjusting the carburetor.
• Make sure the fuel tank is filled with clean, fresh
gasoline.
• Make sure the fuel tank cap vent is not blocked
and that it is operating properly.
• If the fuel tank is equipped with a shut-off valve,
make sure it is open.
• If the engine is equipped with an in-line fuel filter,
make sure it is clean and unobstructed. Replace
the filter if necessary.
• Make sure fuel is reaching the carburetor. This
includes checking the fuel lines and fuel pump for
restrictions or faulty components, replace as
necessary.
• Make sure the air cleaner element is clean and all
air cleaner components are fastened securely.
If, after checking the items listed above, the engine is
hard to start, runs roughly, or stalls at low idle speed,
it may be necessary to adjust or service the
carburetor.
Carburetor Adjustment
NOTE: These engines may have a fixed idle or limiter
cap on the idle fuel adjusting needle. Step 2
can only be performed within the limits
allowed by the cap.
1. Start the engine and run at half throttle for 5 to
10 minutes to warm up. The engine must be
warm before doing steps 2 and 3.
KOHLERCO.KOHLER,WISCONSINUSA
EMISSIONCOMPLIANCEPERIOD:
EPA: CARB:
CERTIFIEDON:
REFERTOOWNER'S MANUALFORHPRATING,
SAFETY,MAINTENANCEANDADJUSTMENTS
1-800-544-2444 www.kohlerengines.com
FAMILY 6 KHXS.XXXXGB
TYPEAPP
DISPL. (CC)
MODELNO.
SPEC. NO.
SERIALNO.
BUILDDATE
OEM PROD. NO.
IMPORTANTENGINEINFORMATION
THISENGINE MEETSU.S.EPAANDCA2005AND
LATERANDECSTAGEII (SN:4) EMISSIONREGS
FORSI SMALLOFF–ROADENGINES
N11236
Low Idle Speed
Adjusting Screw
Low Idle Fuel Adjusting Needle with Limiter
Figure 14. Carburetor.

13
2. Low Idle Fuel Needle Setting: Place the throttle
into the idle or slow position.
Turn the low idle fuel adjusting needle out
(counterclockwise) from the preliminary setting
until engine speed decreases (rich). Note the
position of the needle.
Now turn the adjusting needle in (clockwise). The
engine speed may increase, then it will decrease
as the needle is turned in (lean). Note the position
of the needle.
Set the adjusting needle midway between the
rich and lean settings. See Figure 15.
Storage
If the engine will be out of service for two months or
more, use the following storage procedure:
1. Clean the exterior surfaces of the engine.
2. Change the oil and filter while the engine is still
warm from operation. See Change Oil and Filter
on page 9.
3. The fuel system must be completely emptied, or
the gasoline must be treated with a stabilizer to
prevent deterioration. If you choose to use a
stabilizer, follow the manufacturers
recommendations, and add the correct amount
for the capacity of the fuel system. Fill the fuel
tank with clean, fresh gasoline. Run the engine for
2-3 minutes to get stabilized fuel into the
carburetor.
To empty the system, run the engine until the
tank and system are empty.
4. Due to the deep recess around the spark plug,
blow out the cavity with compressed air. Remove
the spark plug. The spark plug is most accessible
when the blower housing is removed for
cleaning.
Add one tablespoon of engine oil into the spark
plug hole. Install the plug, but do not connect the
plug lead. Crank the engine two or three
revolutions. Connect the plug lead.
5. Reinstall the blower housing, if removed
previously, and torque the blower housing
screws to 7.5 N·m (65 in. lb.).
6. Store the engine in a clean, dry place.
3. Low Idle Speed Setting: Place the throttle control
into the idle or slow position. Set the low idle
speed to 1500 RPM* (± 75 RPM) by turning the
low idle speed adjusting screw in or out. Check
the speed using a tachometer.
*NOTE: The actual low idle speed depends on the
application – refer to equipment
manufacturer’s recommendations. The
recommended low idle speed for basic
engines is 1500 RPM. To ensure best
results when setting the low idle fuel
needle, the low idle speed must not
exceed 1500 RPM (± 75 RPM).
Troubleshooting
When troubles occur, be sure to check the simple
causes which, at first, may seem too obvious to be
considered. For example, a starting problem could be
caused by an empty fuel tank. Some common causes of
engine troubles are listed in the following table.
Do not attempt to service or replace major engine
components, or any items that require special timing
or adjustment procedures. Have your Kohler Engine
Service Dealer do this work.
Possible Cause No Improper Dirt In Dirty Incorrect Engine DirtyAir Faulty
Problem Fuel Fuel FuelLine Grass Screen Oil Level Overloaded Cleaner Spark Plug
Will Not Start ••• ••••
Hard Starting ••• ••••
Stops Suddenly • •••••
Lacks Power •••••••
Operates Erratically ••• • ••
Knocks or Pings •• • •
Skips or Misfires ••• ••
Backfires ••••
Overheats •••••
High Fuel Consumption •••
Figure 15. Optimum Low Idle Fuel Setting.
Lean
Rich
Adjust to
Midpoint

14
Parts Ordering
The engine Model, Specification, and Serial Numbers
are required when ordering replacement parts from
your Kohler Engine Service Dealer. These numbers are
found on the identification plate which is affixed to the
engine shrouding. Include letter suffixes if there are
any. See Engine Identification Numbers on page 5.
Always insist on genuine Kohler parts. All genuine Kohler
parts meet strict standards for fit, reliability, and
performance.
Model Designation
Model SV530S for example: S designates Courage
engine, V designates vertical crankshaft, and 530 is the
model designation. A letter suffix designates a specific
version as follows:
Suffix Designates
S Electric Start
Major Repair
Major repair information is available in Kohler Engine
Service Manuals. This type of repair generally
requires the services of a trained mechanic and the use
of special tools and equipment. Kohler Engine Service
Dealers have the facilities, training, and genuine
Kohler replacement parts necessary to perform this
service.
For the nearest Sales & Service location:
• visit our website www.kohlerengines.com
• call 1-800-544-2444 (U.S. & Canada)
• look in the yellow pages under Engines-Gasoline
Kohler Co. warrants to the original retail consumer that each new COURAGE®engine sold by Kohler Co. will be free from
manufacturing defects in materials or workmanship in normal residential homeowner service for a period of two (2) years from date of
purchase, provided it is operated and maintained in accordance with Kohler Co.’s instructions and manuals. If used commercially the
COURAGE®engine is covered by a 90 day limited warranty.
The warranty period begins on the date of purchase by the original retail consumer or commercial end user. “Residential homeowner
service” means residential use by a retail consumer. “Commercial use” means all other uses, including use for commercial, or rental
purposes. Once in commercial use, the engine will thereafter be considered a commercial use engine for the purposes of this warranty.
Our obligation under this warranty is expressly limited, at our option, to the replacement or repair at Kohler Co., Kohler, Wisconsin
53044, or at a service facility designated by us of such parts as inspection shall disclose to have been defective.
EXCLUSIONS:
Mufflers on engines used commercially (non-residential) are warranted for 90 days from date of purchase.
This warranty does not apply to defects caused by casualty or unreasonable use, including faulty repairs by others and failure to provide
reasonable and necessary maintenance.
The following items are not covered by this warranty:
Engine accessories such as fuel tanks, clutches, transmissions, power-drive assemblies, and batteries, unless supplied or installed by
Kohler Co. These are subject to the warranties, if any, of their manufacturers.
KOHLER CO. AND/OR THE SELLER SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES OF ANY KIND, including but not limited to labor costs or transportation charges in connection with the repair or
replacement of defective parts.
IMPLIED OR STATUTORY WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, ARE EXPRESSLY LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY. We make no other express warranty, nor
is any one authorized to make any on our behalf.
Some states do not allow limitations on how long an implied warranty lasts, or the exclusion or limitation of incidental or consequential
damages, so the above limitation or exclusion may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
TO OBTAIN WARRANTY SERVICE:
Purchaser must bring the engine to an authorized Kohler service facility. To locate the nearest facility, visit our website,
www.kohlerengines.com, and click on SALES AND SERVICES to use the locator function, consult your Yellow Pages or telephone
1-800-544-2444. ENGINE DIVISION, KOHLER CO., KOHLER, WISCONSIN 53044
COURAGE®ENGINE LIMITED WARRANTY

15
Continued on next page.
KOHLER CO.
FEDERAL AND CALIFORNIA EMISSION CONTROL SYSTEMS
LIMITED WARRANTY
SMALL OFF-ROAD ENGINES
The U.S. Environmental Protection Agency (EPA), the California Air Resources Board (CARB), and Kohler Co. are pleased to explain
the Federal and California Emission Control Systems Warranty on your small off-road equipment engine. In California beginning in
2006 "emissions" means both exhaust and evaporative emissions. For California, engines produced in 2006 and later must be designed,
built and equipped to meet the state’s stringent anti-smog standards. In other states, 1997 and later model year engines must be
designed, built and equipped, to meet the U.S. EPA regulations for small non-road engines. The engine must be free from defects in
materials and workmanship which cause it to fail to conform with U.S. EPA standards for the first two years of engine use from the date
of sale to the ultimate purchaser. Kohler Co. must warrant the emission control system on the engine for the period of time listed
above, provided there has been no abuse, neglect or improper maintenance.
The emission control system may include parts such as the carburetor or fuel injection system, the ignition system, and catalytic
converter. Also included are the hoses, belts and connectors and other emission related assemblies.
Where a warrantable condition exists, Kohler Co. will repair the engine at no cost, including diagnosis (if the diagnostic work is
performed at an authorized dealer), parts and labor.
MANUFACTURER’S WARRANTY COVERAGE
Engines produced in 2006 or later are warranted for two years in California. In other states, 1997 and later model year engines are
warranted for two years. If any emission related part on the engine is defective, the part will be repaired or replaced by Kohler Co. free
of charge.
OWNER’S WARRANTY RESPONSIBILITIES
(a) The engine owner is responsible for the performance of the required maintenance listed in the owner’s manual. Kohler Co.
recommends that you retain all receipts covering maintenance on the engine, But Kohler Co. cannot deny warranty solely for the
lack of receipts or for your failure to assure that all scheduled maintenance was performed.
(b) Be aware, however, that Kohler Co. may deny warranty coverage if the engine or a part has failed due to abuse, neglect,
improper maintenance or unapproved modifications.
(c) For warranty repairs, the engine must be presented to a Kohler Co. service center as soon as a problem exists.
Call 1-800-544-2444 or access our web site at: www.kohlerengines.com, for the names of the nearest service centers. The
warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.
If you have any questions regarding warranty rights and responsibilities, you should contact Kohler Co. at 1-920-457-4441 and ask for
an Engine Service representative.
COVERAGE
Kohler Co. warrants to the ultimate purchaser and each subsequent purchaser that the engine will be designed, built and equipped, at the
time of sale, to meet all applicable regulations. Kohler Co. also warrants to the initial purchaser and each subsequent purchaser, that the
engine is free from defects in materials and workmanship which cause the engine to fail to conform with applicable regulations for a
period of two years.
Engines produced in 2006 or later are warranted for two years in California. For 1997 and later model years, EPA requires
manufacturers to warrant engines for two years in all other states. These warranty periods will begin on the date the engine is
purchased by the initial purchaser. If any emission related part on the engine is defective, the part will be replaced by Kohler Co. at no
cost to the owner. Kohler Co. is liable for damages to other engine components caused by the failure of a warranted part still under
warranty.
Kohler Co. shall remedy warranty defects at any authorized Kohler Co. engine dealer or warranty station. Warranty repair work done at
an authorized dealer or warranty station shall be free of charge to the owner if such work determines that a warranted part is defective.

Listed below are the parts covered by the Federal and California Emission Control Systems Warranty. Some parts listed below may
require scheduled maintenance and are warranted up to the first scheduled replacement point for that part. The warranted parts include
the following if they were present in the engine purchased:
•Oxygen sensor (if equipped) •Ignition module(s) with high tension lead
•Intake manifold (if equipped) •Gaseous fuel regulator (if equipped)
•Exhaust manifold (if equipped) •Electronic control unit (if equipped)
•Catalytic muffler (if equipped) •Carburetor or fuel injection system
•Thermal reactor muffler (if equipped) •Fuel metering valve (if equipped)
•Fuel lines, fuel line fittings and clamps (if equipped) •Air filter, fuel filter, and spark plugs (only
•Spark advance module (if equipped) to first scheduled replacement point)
•Crankcase breather •Evaporative System (if equipped)
•Air Injection System (if equipped) - Canister (if equipped)
- Air pump or pulse valve assembly (if equipped) - Canister filter (if equipped)
- Control/distribution valve (if equipped) - Vapor hose (if equipped)
- Distribution manifold (if equipped) - Orifice connector (if equipped)
- Air hoses (if equipped) - Fuel tank (if equipped)
- Vacuum lines (if equipped) - Fuel cap (if equipped)
- Primer bulb canister (if equipped)
LIMITATIONS
This Emission Control Systems Warranty shall not cover any of the following:
(a) repair or replacement required because of misuse or neglect, improper maintenance, repairs improperly performed or
replacements not conforming to Kohler Co. specifications that adversely affect performance and/or durability and alterations or
modifications not recommended or approved in writing by Kohler Co.,
(b) replacement of parts and other services and adjustments necessary for required maintenance at and after the first scheduled
replacement point,
(c) consequential damages such as loss of time, inconvenience, loss of use of the engine or equipment, etc.,
(d) diagnosis and inspection fees that do not result in eligible warranty service being performed, and
(e) any add-on or modified part, or malfunction of authorized parts due to the use of add-on or modified parts.
MAINTENANCE AND REPAIR REQUIREMENTS
The owner is responsible for the proper use and maintenance of the engine. Kohler Co. recommends that all receipts and records
covering the performance of regular maintenance be retained in case questions arise. If the engine is resold during the warranty period,
the maintenance records should be transferred to each subsequent owner. Kohler Co. reserves the right to deny warranty coverage if
the engine has not been properly maintained; however, Kohler Co. may not deny warranty repairs solely because of the lack of repair
maintenance or failure to keep maintenance records.
Normal maintenance, replacement or repair of emission control devices and systems may be performed by any repair establishment or
individual; however, warranty repairs must be performed by a Kohler authorized service center. Any replacement part or service that is
equivalent in performance and durability may be used in non-warranty maintenance or repairs, and shall not reduce the warranty
obligations of the engine manufacturer.
ENGINEDIVISION,KOHLERCO.,KOHLER,WISCONSIN53044
FORSALESANDSERVICEINFORMATION
INU.S.ANDCANADA, CALL 1-800-544-2444
KohlerEngines.com
LITHO IN U.S.A.
FORMNO.: 20 590 01-B
ISSUED: 11/04
REVISED: 1/08