Subaru Eh90 User manual

EH99

EH90/ EH99

OHV Gasoline Engine EMD-EU9099

September 2013

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Subaru Industrial Power Products

905 Telser Road • Lake Zurich, IL 60047 • USA •Toll Free: 800-277-6246 • 847-540-7300

www.subarupower.com

PRODUCT REGISTRATION

SPECIFICATION No SERIAL No

FORWARD

Thank you for choosing a Subaru. Your Subaru engine can supply the power to operate various sorts of machines and

equipment. Keep this owner’s manual at hand, so you can refer to it when needed.

Due to constant efforts to improve our products, certain procedures and speciﬁcations are subject to change without notice.

When ordering spare parts, always give us the MODEL, SPECIFICATION (PRODUCT) NUMBER and SERIAL NUMBER

of your engine.

Please ﬁll in the blanks below after checking the product number on your engine.

(Location of label is different depending on the engines speciﬁcation.)

MODEL No

Prod. No. EH990DSXXXX

Displacement 999.00 cc

SERIAL No. F6000005 13028

SERIAL No. F6000005

Serial No. F6000005 13028

CONTENTS

SAFETY PRECAUTIONS......................................................................................................................... 5

GENERAL INFORMATION....................................................................................................................... 7

BATTERY INSTALLATION....................................................................................................................... 8

OPERATING YOUR ENGINE ................................................................................................................... 8

GENERAL MAINTENANCE ................................................................................................................... 10

MAINTENANCE SCHEDULE................................................................................................................. 14

PREPARATIONS FOR STORAGE......................................................................................................... 15

SPECIFICATIONS................................................................................................................................... 16

EASY TROUBLESHOOTING ................................................................................................................. 16

WIRING DIAGRAM................................................................................................................................. 17

WARRANTY............................................................................................................................................ 18

SYMBOLS

USA and CANADA only

Read INSTRUCTIONS

FOR USE before use.

The engine emits

toxic gas that can kill

you in minutes.

Do not run in an

enclosed area.

Hot surface can

burn you.

Stay away if engine

has been running.

Gasoline is extremely ammable and its vapors can explode.

• Stop the engine before refueling.

• Check for leakage from hoses and ttings.

• Shut o fuel valve when the engine is not in use.

The safety alert symbol ( ) is used with a signal word (DANGER, CAUTION, WARNING), a pictorial and/or a safety

message to alert you to hazards.

DANGER indicates a hazard which, if not avoided, will result in death or serious injury.

WARNING indicates a hazard which, if not avoided, could result in death or serious injury.

CAUTION indicates a hazard which, if not avoided, might result in minor or moderate injury.

NOTE indicates a situation that could result in engine damage. Follow safety messages to avoid or reduce the risk

of injury or death.

The manufacturer cannot possibly anticipate every possible circumstance that might involve a hazard. The warnings in this

manual, and the tags and decals afﬁxed to the unit are, therefore, not all-inclusive. If you use a procedure, work method or

operating technique that the manufacturer does not speciﬁcally recommend you must satisfy yourself that it is safe for you and

others. You must also make sure that the procedure, work method or operating technique that you choose does not render the

engine system unsafe.

These safety warnings cannot eliminate the hazards that they indicate. Common sense and strict compliance with the special

instructions while performing the action or service are essential to preventing accidents.

Study these RULES FOR SAFE OPERATION carefully before operating or servicing this equipment. Become familiar with the

OWNER’S MANUAL and with the engine. The engine can operate safely, efﬁciently and reliably only if it is properly operated

and maintained. Many accidents are caused by failing to follow simple and fundamental rules or precautions.

▲

DANGER

▲

A running engine gives off carbon

monoxide, an odorless, colorless,

poison gas.

Breathing carbon monoxide can

cause headache, fatigue,

dizziness, vomiting, confusion,

seizures, nausea, fainting or

death.

• Operate engine ONLY outdoors.

• Keep exhaust gas from entering a conﬁned

area through windows, doors, ventilation

intakes, or other openings.

SAFETY PRECAUTIONS

CALIFORNIA PROPOSITION 65 WARNING

Engine exhaust and some of its constituents are

known to the State of California to cause cancer,

birth defects and other reproductive harm.

CALIFORNIA PROPOSITION 65 WARNING

This product contains or emits chemicals known

to the State of California to cause cancer, birth

defects and other reproductive harm.

SAFETY PRECAUTIONS

BEFORE OPERATING

• Gasoline is highly FLAMMABLE and its vapors are

EXPLOSIVE. Do not permit smoking, open ﬂames, sparks

or heat in the area while handling gasoline. Avoid spilling

gasoline on a hot engine. Comply with all of the laws

regulating storage and handling of gasoline.

•Store gasoline and other fuels only in containers designed

and approved for the storage of such materials.

• Pressure can build up in the fuel tank. Loosen the fuel cap

slowly to relieve any pressure in the tank.

• Add gasoline and other fuels in a clean, well-ventilated

area. Wipe up any spilled gasoline immediately. If gasoline

has been spilled, let it dry completely before starting the

engine.

• Do not overﬁll the fuel tank. Always allow room for fuel

expansion. If the tank is overﬁlled, the fuel can overﬂow

onto a hot engine and cause a FIRE or an EXPLOSION.

• Thoroughly inspect the engine for loose or damaged parts

before each use. Do not use the engine until adjustments or

repairs are made.

• Check the oil level in the engine before each use.

• Inspect the engine periodically. Repair or replace all

damaged or defective parts immediately.

• Inspect fuel system frequently for leaks or damage. Repair

or replace any damaged or leaking component

immediately. Never attempt to change, alter or modify the

engine fuel system in any way that might affect safety or

compliance with applicable codes and standards.

WHILE OPERATING

• This engine was designed and manufactured for speciﬁc

applications. Do not attempt to modify the equipment or use

it for any application for which it was not designed.

• Engine exhaust gases contain DEADLY carbon monoxide

gas. This dangerous gas, if breathed in sufﬁcient

concentrations, can cause unconsciousness or even death.

Operate this equipment only in the open air where

adequate ventilation is available.

• Do not insert any object through the cooling slots of the

engine. This could damage the equipment or injure

personnel.

• Do not operate the engine faster than the speed

necessary to operate the equipment. Do not run the engine

at high speed when not operating the equipment.

• This engine requires an adequate ﬂow of cooling air for its

continued proper operation. Never operate the equipment

inside any room or enclosure where the free ﬂow of cooling

air into and out of the equipment might be obstructed.

Without sufﬁcient cooling air ﬂow, the engine quickly

overheats, damaging the engine or nearby property.

• Do not smoke around the engine. Wipe up any fuel or

oil spills immediately. Never leave oily or fuel soaked rags

around the engine. Keep the area around the engine clean

and free of debris.

• Keep hands, feet, clothing, etc., away from moving parts of

this engine.

• Never operate the engine (a) in the rain; (b) in any en-

closed compartment; (c) if the engine speed changes;

(d) if the engine sparks; (e) if ﬂame or smoke is observed

while the engine is running.

• Never work on this engine or handle any electrical device

while standing in water, while barefoot, or while hands or

feet are wet. DANGEROUS ELECTRIC SHOCK will result.

• Allow mufﬂer, engine cylinder and ﬁns to cool before

touching.

• Remove accumulated combustibles from mufﬂer area and

cylinder area.

• Install and maintain in working order a spark arrester

before using equipment on forest covered, grass covered,

brush covered unimproved land.

SERVICE INFORMATION

Service on this engine within and after the warranty period

can be performed by any authorized Subaru service dealer.

When contacting an authorized Subaru service dealer about

parts and service, always supply the complete model num-

ber and serial number of the unit as shown on the speciﬁca-

tion label.

The warranty for this engine is included in the back of the

owner’s manual.

Use only high quality detergent oil rated with an API service

classiﬁcation SJ or higher. DO NOT use oil designated “For

Diesel Engines Only”. The use of a multi-weight oil (10W-30)

may result in higher than normal oil consumption. Therefore,

checking the oil level more frequently may be required.

The recommended oil weights include the following:

• During summer months: SAE30. An acceptable substitute

is SAE 10W-30.After ﬁrst oil change, synthetic oil is

acceptable.

• During winter months: SAE 5W-30, or after the ﬁrst oil

change, synthetic 5W-30 can be used. DO NOT USE SAE

10W-40.

CHANGE OIL

Use no special additives. Make sure that the unit is level

when ﬁlling with oil. DO NOT OVERFILL.

IMPORTANT: DO NOT OVERFILL. Check and maintain

oil level regularly. Change oil and ﬁlter after ﬁrst eight (8)

hours of operation. Thereafter, change oil and ﬁlter every

100 hours of operation. Change oil more often if engine is

operated in dirty or dusty conditions or if engine is operated

under heavy loads or in high ambient air temperatures.

RECOMMENDED FUEL TYPE

The fuel tank is provided separately from the Equipment

manufacturer.

Do not overﬁll the fuel tank. Always allow room for fuel

expansion.

OIL AND FUEL INFORMATION

NOTE:

Be sure to read these instructions carefully before

attempting to start or operate this equipment. Using old

or improper oil or fuel can cause engine damage.

Any attempt to crank or start the engine before

it has been properly serviced with the

recommended oil may result in engine damage.

This engine is shipped from the manufacturer

without oil. Check oil level before starting

engine. The engine will be damaged beyond

repair and will not be covered under warranty if

started without oil.

RECOMMENDED OIL TYPE

Using the proper type and weight of oil in the crankcase

is extremely important. Check the oil before each use and

change the oil regularly (see Figure 1). Failure to use the

correct oil, or using dirty oil, can cause premature engine

wear and failure.

OIL CAPACITY: 1.8 liters (1.9 qts/73.6 ounces)

GENERAL INFORMATION

CAUTION

▲

°F -20 0 20 32 40 60 80 100

°C-30 -20 -10 0 10 20 30 40

Temperature Range of Expected Use

SAE 30, 10W-30

5W-30

Synthetic 5W-30

Figure 1

CAUTION

▲

OIL CHECK

OIL FILL

Never ﬁll the fuel tank indoors, or when the engine is

running or hot. Wait 1 minute before reﬁlling. Do not

light a cigarette or smoke when ﬁlling the fuel tank.

NOTE: THE ENGINE IS CERTIFIED TO OPERATE ON

AUTOMOTIVE UNLEADED GASOLINE, WITH

NO MORE THAN 10% ETHANOL (E10). DO NOT

USE E15 OR E85.

NOTE: Using a fuel additive such as STA-BIL® fuel

stabilizer, or an equivalent, will delay gum

deposits from forming in the engine’s fuel

system.

It is also recommended that gasoline be purchased in small

quantities, not more than a 30 day supply. FRESH gasoline

minimizes gum deposits, and also will ensure fuel volatility

tailored for the season in which the engine will be operated.

RECOMMENDED BATTERY

Servicing the battery is to be performed or supervised by

personnel knowledgeable of batteries and the required pre-

cautions. Keep unauthorized personnel away from batteries.

Use only 12 volt negative (-) ground batteries with a mini-

mum rating of 450 cold-cranking amps at -17.8C (O F)

(OEM requirements may differ).

The battery and battery cables are not provided with the

engine from Subaru. If this engine was purchased as part of

a piece of equipment, the battery and cables may have been

supplied by the equipment manufacturer.

Damage will result to the engine starter if a battery

rated less than 450 cold-cranking amps is used.

BATTERY CABLES

Using battery cables that are too long or too small in di-

ameter may cause a decrease in voltage which leads to a

starting problem due to voltage drop. Use a cable size “2” for

length up to 10 feet. See Figure 2 for battery cable

connections.

WARNING

▲

!Figure 2

OPERATION AND MAINTENANCE

It is the owner’s/operator’s responsibility to perform all safety

checks; to make sure that all maintenance for safe opera-

tion is performed promptly; and to have the engine checked

by an authorized dealer periodically. Normal maintenance

service and replacement of parts are the responsibility of the

owner/operator and, as such, are not considered defects in

material or workmanship within the terms of the warranty.

Individual operating habits and usage contribute to the need

for maintenance service.

Proper maintenance and care of the engine assures a mini-

mum number of problems and keeps operating expenses at

a minimum. See an authorized Subaru dealer/distributor for

service aids and accessories.

BEFORE STARTING THE ENGINE

Perform the following tasks before trying to start the engine:

Checking and Adding Engine Oil:

NOTE: When adding oil to the engine crankcase, use

only high quality detergent oil rated with API

service classiﬁcation SJ (or higher). Use no

special additives.

Select the oil’s viscosity grade according to the expected

operating temperature. Do not use SAE 10W-40.

Check engine oil level frequently to avoid possible damage

from running low on oil.

WARNING

▲

Starter Contact

• Place engine on level surface.

• Clean area around oil ﬁll and remove oil ﬁll cap and

dipstick.

• Wipe dipstick clean. Reinstall and check oil level on

dipstick. (Figure 3)

• Slowly ﬁll engine with oil through the oil ﬁll opening until

it reaches the full mark on the dipstick. Stop ﬁlling,

occasionally to check oil level. DO NOT OVERFILL.

• Install dipstick. Install oil ﬁll cap and ﬁnger tighten

securely.

• Check engine oil level before starting each time

thereafter.

STARTING THE ENGINE

1 Open the fuel shut-off valve, (if equipped)

2 Move choke control to Choke or Start position.

3 Push throttle to Fast position (if equipped). Operate the

engine with the throttle in Fast position.

4 Turn key to Start position (hold until engine starts, but

not more than 5 seconds). To prevent damage to starter,

allow starter to cool for one minute between attempting

to restart.

5 A) If the engine FAILS TO START, go to Step 6

B) If the engine STARTS, go to Step 7

6 Push the choke lever to the HALF CHOKE POSITION.

Repeat step 4.

• If the engine STILL FAILS TO START, repeat

Steps 1-5.

7 Once the engine starts move the choke lever to the Off

POSITION by pushing it in or move choke control to Run

position. Allow engine to warm up for two minutes.

NOTE: For cold weather starting: make sure the

proper engine oil is being used.

STOPPING THE ENGINE

1 Remove load from engine.

2 Move throttle to SLOW position.

3 While still running, allow engine to cool for two minutes.

4 Turn key to OFF position.

5 Close fuel shut-off valve (if equipped)

LOW OIL PRESSURE SHUTDOWN

Operation of an engine with low oil pressure will cause sig-

niﬁcant damage within minutes. This engine is equipped with

a low oil pressure sensor that will shut off the engine if the

oil pressure drops below the safe operating pressure. If the

engine is equipped with the optional Subaru control box, the

warning light on the box will turn on and the engine will be

shut-down if the oil pressure is too low. If the engine has no

Subaru control box the engine will simply shut-down when

the oil pressure is too low.

For some applications, such as vehicles, it may be safer

to operate the equipment with the low oil pressure shut-off

system disabled. To disable the low oil pressure shut-off

system, disconnect (pull apart) the White and Blue wire

terminals that are located above the Oil Filter and the Oil

Pressure Switch. If this engine was purchased as part of an

equipment assembly, the equipment manufacturer may have

disabled the low oil pressure shut-down system. Please

check with your equipment dealer for details.

A low oil pressure condition is typically caused by insufﬁcient

oil in the crankcase, contaminated oil, old oil that has not

be changed within the recommended service interval or an

internal engine problem. Please check with your authorized

Subaru engine service dealer for assistance. The low oil

pressure shut-down system does not replace proper service

and maintenance and the checking of the oil level before the

engine is started. Always check for proper oil level before

starting the engine.

HIGH OIL TEMPERATURE ALARM

Operation of an engine with high oil temperature will cause

signiﬁcant damage within minutes. This engine is equipped

with a high oil temperature sensor and alarm system. The

oil temperature sensor monitors the oil temperature during

engine operation. If the oil temperature exceeds a safe oper-

ating condition, a high pitched and pulsating warning alarm

will sound.

If the alarm sounds, immediately shut the engine off.Al-

low the engine to cool and check for the cause of the high

engine oil temperature condition. Causes may include low

oil level, contaminated oil, blocked air ﬂow across the heads

Oil Dipstick

FULL

LOW

Figure 3

and cylinders. Please check with your authorized Subaru en-

gine service dealer for assistance. Only operate the engine

after it has cooled and the cause of the problem has been

corrected. The high oil temperature alarm system does not

replace proper service and maintenance and the checking of

the oil level and cooling system before the engine is started.

Always check for proper oil level and unobstructed air

cooling intake and passages before starting the engine.

WINTER/SUMMER INTAKE AIR CONTROL

(IF SO EQUIPPED)

Under certain weather conditions (temperatures below 40° F

(4° C) and a high dew point), the engine may experience ic-

ing of the carburetor and/or the crankcase breather system.

To eliminate this problem, this engine may be ﬁtted with a

winter/summer valve (Figure 4). This directs hot air into the

carburetor during cold weather operation. Always make sure

the winter/summer valve is in the correct location relative to

the weather conditions.

Figure 4

GENERAL MAINTENANCE

RECOMMENDATIONS

PERFORMING SCHEDULED MAINTENANCE

It is important to perform service as speciﬁed in the Main-

tenance Schedule for proper engine operation, and to

ensure that the engine complies with the applicable emis-

sion standards for the duration of its useful life. Service and

repairs may be performed by any capable person or repair

shop. Additionally, emissions critical maintenance must be

performed as scheduled in order for the Emissions Waranty

to be valid. Emissions critical maintenance consists of ser-

vicing the air ﬁlter and spark plugs in accordance with the

Maintenance Schedule.

CHECKING THE OIL LEVEL

See the “BEFORE STARTING THE ENGINE” section for

information on checking the oil level. The oil level should be

checked before each use, or at least every eight (8) hours of

operation. Keep the oil level maintained.

CHANGING THE OIL AND FILTER

The engine is equipped with an oil ﬁlter. Change the oil and

ﬁlter after the ﬁrst eight (8) hours of operation. Change

the oil and oil ﬁlter every 100 hours thereafter. If using this

engine under dirty or dusty conditions, or in extremely hot

weather, change the oil more often.

Use the following instructions to change the oil while the

engine is still warm:

1 Clean the area around the oil drain plug, remove the

plug and drain the oil completely into a suitable

container (Figure 5).

Figure 5

2 When the oil is drained, install and tighten the oil drain

plug.

3 When changing the oil ﬁlter, use the following

instructions:

A Locate ﬁlter (Figure 6)

Drain

Oil Dipstick

FULL

LOW

items to maintain. The engine will not run properly and may

be damaged if it is run with a dirty air cleaner system.

Service or replace the paper air ﬁlter per the “Maintenance

Schedule” section. Service or replace the ﬁlter more often if

the engine is operated under dusty or dirty conditions. Clean

the foam pre-ﬁlter (if equipped) every 25 hours of operation,

or sooner under dusty or dirty conditions.

Use the following instructions to clean or replace the air

cleaner components. Locate the engine conﬁguration

(ﬁgure 8 or 9) and follow the instructions.

Never run this equipment without the complete air

cleaner system installed on the engine. This could

result in premature wear to the engine.

Flat Top Air Cleaner

To clean or replace foam pre-cleaner (if equipped):

• Remove air cleaner cover, then foam pre-ﬁlter.

• Wash pre-cleaner in soapy water. Squeeze pre-ﬁlter dry

in clean cloth (DO NOT TWIST).

• Add light oil to the foam pre-ﬁlter before re-installing on

the air ﬁlter element.

• Clean air cleaner cover before re-installing it.

To service or replace paper air ﬁlter:

• Remove air cleaner cover; then remove foam pre-ﬁlter

(if equipped) and remove paper ﬁlter.

• If the ﬁlter is too dirty, replace it with a new one. Dispose

of the old ﬁlter properly.

• Clean air cleaner cover then slip pre-cleaner over ﬁlter

(if equipped).

• Next insert new paper ﬁlter into the base of the air

cleaner. Re-install air cleaner cover.

Figure 6

B Place a suitable container beneath the oil ﬁlter and

turn the ﬁlter counterclockwise to remove the ﬁlter.

C Coat the gasket of a new ﬁlter with engine oil. Turn

the new ﬁlter clockwise until the gasket contacts the

ﬁlter adapter, then tighten an additional 3/4 turn.

4 Remove the oil ﬁll cap and insert a clean funnel into the

oil ﬁll opening. Fill the crankcase with the recommended

oil until the oil level is at the full point on the dipstick.

POUR SLOWLY.

5 When the crankcase is ﬁlled to the proper level, install

and tighten the oil ﬁll cap. Start engine to ﬁll oil ﬁlter,

recheck/correct oil level.

CLEANING INTAKE SCREEN AND COOLING FINS

Inspect and clean the intake screen and the following engine

cooling ﬁns: cylinder, cylinder head, oil ﬁlter base and oil

cooler after each use or as needed. Blow or brush out any

debris to help the engine run cooler. Continued operation

with a clogged cooling system can cause severe overheat-

ing and possible engine damage. Do not pressure wash to

avoid shorting and corrosion in the wiring harness, oil pres-

sure switch, solenoid and starter motor (Figure 7).

Figure 7

SERVICING THE AIR CLEANER

The engine’s air cleaner system is one of the most important

CAUTION

▲

Oil Filter

INTAKE SCREEN

OIL

COOLER

FINS

each year, whichever comes ﬁrst. This will help the engine to

start easier and run better.

1 Stop the engine and pull the spark plug wires off of the

spark plugs.

2 Clean around the spark plugs and remove them from the

cylinder head.

3 Set the spark plug gap (Figure 10) to 1.1 mm (0.043 in).

Install a correctly gapped spark plugs into the cylinder

head.

Figure 10

CLEANING SPARK ARRESTOR SCREEN

If the engine exhaust mufﬂer has a spark arrestor screen,

inspect and clean the screen every 100 hours of operation or

once each year, whichever comes ﬁrst.

NOTE: If using the engine on any forest-covered, brush-

covered or grass-covered unimproved land, it

must have a spark arrestor. The spark arrestor

must be maintained in good condition by the

owner/operator.

Clean and inspect the spark arrestor screen as follows:

Inspect the screen and replace if it is torn, perforated or other-

wise damaged. DO NOT USE a defective screen. If the screen

is not damaged, clean it with a commercial solvent.

If the spark arrestor is found to be damaged or worn out,

replace it.

SERVICE AND ADJUSTMENTS

ENGINE SPEED

The operating speed of this engine is maintained by a mechani-

cally controlled governor. DO NOT try to adjust the governed

speed setting for the following reasons:

Figure 8 - Flat Top Air Cleaner

Canister Style Air Cleaner

• Remove air cleaner cover.

• Empty dust out of cover.

• Gently pull ﬁlter out of air cleaner housing.

• Clean inside of housing with damp cloth.

• Push new air ﬁlter into housing.

• Reinstall the air cleaner cover.

Figure 9 - Canister Style Air Cleaner

REPLACING AND CLEANING THE SPARK PLUGS

Clean and adjust the spark plug gap every 50 hours of opera-

tion. Replace the plugs every 500 hours of operation or once

COVER

AIR FILTER

ELEMENT,

PRIMARY

HOUSING

AIR FILTER

ELEMENT,

SAFETY

Figure 11

NOTE: The rocker arm jam nut must be held in place as

the pivot ball stud is turned.

When the valve clearance is correct, hold the

pivot ball stud in place with the Allen wrench and

tighten the rocker arm jam nut. Tighten the jam

nut to 168 in/lbs. (19 Nm) torque. After tightening

the jam nut, recheck valve clearance to make

sure it did not change.

• Install new valve cover gasket.

• Re-install the valve cover and torque to 60 in.lbs (6.8 Nm).

NOTE: Start all four screws before tightening, then torque

in a crisscross pattern. Make sure the valve cover

gasket is in place.

• Repeat the process for the other cylinder.

• Re-install spark plugs.

• Re-attach the spark plug wires to the spark plugs.

MAINTENANCE SCHEDULE

The owner/operator is responsible for making sure that all

periodic maintenance tasks are completed on a timely basis;

that all discrepancies are corrected; and that the equipment is

kept clean and properly stored. Never operate a damaged or

defective engine.

Disconnect the spark plug wires from the spark plugs,

and place the wires where they cannot come in contact

with the spark plugs before working on this engine.

• Operating the engine at high engine speeds is dangerous

and increases the risk of personal injury or damage to the

equipment.

• Operating the engine at low engine speeds with heavy

loads may shorten the engine’s life.

CARBURETOR ADJUSTMENTS

The carburetor of the engine is pre-set at the factory. The car-

buretor should not be tampered with because it would violate

EPA and CARB regulations and VOID THE EMISSION

CONTROL SYSTEM WARRANTY.

CHECKING AND ADJUSTING VALVE CLEARANCE

Check valve clearance and adjust (if necessary) after the ﬁrst

50 hours of operation and every 300 hours thereafter.

IMPORTANT: if not qualiﬁed for doing this procedure or the

proper tools are not accessible, please take the engine/equip-

ment to the nearest Authorized Subaru Service Center to have

the valve clearance adjusted. This is a very important step to

insure a long life for the engine.

To adjust valve clearance:

• Make sure the engine is at room temperature

• Remove spark plugs and make sure that the spark plug

wires are out of the way.

• Remove the four screws attaching the valve cover with a

10 mm wrench or socket.

• Make sure the piston is at Top Dead Center (TDC) of its

compression stroke (both valves closed). To get the piston

at TDC, remove the intake screen at the front of the

engine to gain access to the ﬂywheel nut. Use a ratchet

and a 36 mm socket to rotate the engine in a clockwise

direction. While watching the piston through the spark plug

hole, the piston should be observed moving up after the

intake valve closed. The piston is at TDC when it is at its

highest point of travel.

• Loosen the rocker jam nut (Figure 11). Use a 10 mm Allen

wrench to turn the pivot ball stud while checking clearance

between the rocker arm and the valve stem with a feeler

gauge. Correct clearance is 0.002-0.004 inch (0.50-0.1mm)

for both intake and exhaust valves.

0.076 mm

(0.003") GAUGE

JAM NUT

BALL STUD

CAUTION

▲

MAINTENANCE SCHEDULE

Every 8 Hours

or Daily Every 50 Hours

or Yearly Every 100 Hours

or Yearly Every 500

Hours or Yearly Every 1000

Hours

Clean engine and check bolts and nuts •(Daily)

Check for leakage from hoses and ﬁttings •(Daily)

Check and reﬁll engine oil •

Change engine oil (Note 1) •

(Initial 8 hours) •

Replace engine oil ﬁlter (Note 1) •

(Initial 8 hours) •

Check battery electrolyte ﬂuid level •

Adjust spark plugs •

Clean foam pre-ﬁlter (if equipped) •

(Initial 25 hours)

Spark arrester (optional part) •

Replace Industrial (Donaldson) A/C ﬁlter •

Replace low proﬁle, (ﬂat top) A/C ﬁlter •

Replace fuel strainer (ﬁlter) •

Clean and adjust spark plugs and electrodes •

Replace spark plugs •

Remove carbon from cylinder heads •

Clean carburetor •

Clean engine base (oil pan) •

Check and adjust valve clearance •

(Initial 50 hours) •

(Initial 300 hours

thereafter)

Replace fuel lines •

(Every 2 years)

Note 1 : Initial oil change and oil ﬁlter replacement should be performed after 8 hours of operation.

Thereafter change oil and oil ﬁlter every hundred (100) hours.

Before changing oil, check for a suitable way to dispose of old oil.

Note 2: More frequent oil changing, oil ﬁlter replacement and air cleaner service on replacement may be necessary

depending on operating conditions. This would include dusty environment, high ambient temperature, heavy

engine loading.

STORAGE INSTRUCTIONS

This engine should be started at least once a month and run

for at least 10 minutes. If this cannot be done and the equip-

ment must be stored for more than 30 days, use the follow-

ing guidelines to prepare it for storage.

Never store the engine with the fuel in the tank indoors

or in an enclosed or poorly ventilated area. Fumes

can reach an open ﬂame, spark, or pilot light as on a

furnace, water heater, or clothes dryer and ignite.

1. Run the engine for about ﬁve (5) minutes to warm it.

NOTE: Alcohol-blended fuel, or ethanol, attracts

moisture which can lead to the separation and

formation of acids during storage. This acidic gas

can damage internal engine parts.

Drain the fuel into an approved container, outdoors

and away from open ﬂame. Be sure the engine is cool.

NOTE: Using a fuel additive such as STA-BIL® fuel

stabilizer, or an equivalent, will delay gum deposits

from forming in the engine’s fuel system.

2. While the engine is still warm, drain the oil from the

crankcase (Figure 5). Reﬁll it with fresh oil. See the

“BEFORE STARTING ENGINE” section for oil

recommendations.

3. Remove spark plugs and pour about 1/2 ounce (15ml) of

engine oil into the cylinders. Crank slowly to distribute

oil.

Avoid spray from the spark plug hole when cranking

the engine slowly.

CAUTION

▲

WARNING

▲

DANGER

▲

4. Install the spark plugs. Do not connect the spark plug

wires.

5. Clean dirt, oil and grease from the cylinder, cylinder

head, ﬁns, blower housing, rotating screen and mufﬂer

area.

6. Close the fuel shut-off valve, if equipped.

OTHER STORAGE TIPS

1. Do not store gasoline from one season to another.

2. Use only plastic containers. Rust and/or dirt in metal

gasoline containers can cause problems.

3. Store the equipment in a clean and dry area.

TROUBLESHOOTING

PROBLEM CAUSE CORRECTION

Engine will not start; or starts

and runs rough 1. Clean or replace air cleaner

2. Fill fuel tank

3. Drain fuel tank and carburetor, ﬁll with

fresh fuel

4. Connect wire to spark plug

5. Replace spark plug

6. Drain fuel tank and carburetor, ﬁll with

fresh fuel.

7. Put choke knob to NO CHOKE position

8. Fill crankcase to proper level

9. Contact Authorized Service Facility

10. Contact Authorized Service Facility

11. Contact Authorized Service Facility

Engine shuts down during

operation 1. Out of gasoline

2. Fault in engine 1. Fill fuel tank

2. Contact Authorized Service Facility

Engine lacks power 1. Dirty air ﬁlter

2. Engine needs to be serviced 1. Replace air ﬁlter

2. Contact Authorized Service Facility

Engine “hunts” or faulters 1. Choke is open too soon.

2. Carburetor is running too rich or too lean

3. Governor or speed control system out of

adjustment

Model Name EH90 / EH99

Type Air-Cooled, 4-stroke, V-Twin Cylinder, Horizontal P.T.O. shaft, OHV., Gas Engine

Bore x Stroke mm (in) 90 x 78.58 (3.54” x 3.09”)

Displacement 999cc (60.96 cu in)

Rated Output 35hp@3600rpm / 40hp@3600rpm (26.1kw / 29.8kw @3600rpm)

Direction of Rotation Counterclockwise as viewed from P.T.O. shaft side

Starting System Electric Starter

Oil Capacity 1.8L (1.9 qts)

Dry Weight lb/Kg 104 / 47

Dimension (L x W x H) 18.45” x 17.23” x 19.15” Flat top Air Cleaner / 18.45 x 17.23 x 28.63 Canister Air Cleaner

SPECIFICATIONS

1. Dirty air cleaner

2. Out of gasoline

3. Stale gasoline

4. Spark plug wire not connected to spark

plug

5. Bad spark plug

6. Water in gasoline

7. Over choking

8. Low oil level

9. Excessive rich fuel mixture

10. Intake valve stuck open or closed

11. Engine has lost compression

1. Move choke to halfway position until

engine runs smoothly

2. Contact Authorized Service Facility

3. Contact Authorized Service Facility

WIRING DIAGRAM

30AMP

FUSE

BLUE

HIGH TEMPERATURE

WARNING ALARM

WHITE

YELLOW

TACHOMETER/

HOUR METER

(OPTION)

SPARK PLUG SPARK PLUG

IG COIL #2

OFF

RUN

IG COIL #1

KEY SWITCH(OPTION)

ORANGE

RED

BLACK

CHARGE COIL

REGULATOR

STARTING MOTOR

BATTERY

RED

SWITCH

OIL PRESSURE

WHITE

LOW OIL

WARNING LAMP

12V-30AH

MB L SG

CARBURETOR

YELLOW

BLUE

YELLOW

START

STOP

DIODE

STOP

DIODE

IGNITION KILL

BLACK

HIGH TEMPERATURE

SENSOR - 293°F

YELLOW

Limited Engine Warranty

(Effective with engines purchased in U.S.A. and Canada after March 1, 2012)

Subaru Industrial Power Products, a division of Fuji Heavy Industries, Ltd. (herein “Subaru”), warrants that each new engine sold

by it will be free, under normal use and service, from defects in material and workmanship for a period listed below from the date of

sale to the original retail purchaser. Subaru’s obligation under this Limited warranty shall be limited to the repair and replacement, at

Subaru’s option, of any part or parts which upon examination is/are found, in Subaru’s judgment, to have been defective in material

or workmanship. It shall be a condition of Subaru’s obligation under this Limited Warranty that Subaru, directly or through one of its

Distributors or Service Centers authorized to service the particular engine involved, receive prompt notice of any warranty claim and

that the engine or the part or parts claimed to be defective be promptly delivered, transportation prepaid, to such distributor or service

Center for inspection and repair. All repairs qualifying under this Limited Warranty must be performed by Subaru or one of its autho-

rized Distributors or Service Centers.

WARRANTY PERIODS:

Subaru Four-Cycle, EX and EH Series, 4.3 hp or greater, Gasoline Engines Limited 5 year Warranty

Subaru Four-Cycle, EH Series, LP/NG Engines Limited 5 year Warranty

Subaru Mini-Four-Cycle, EH025, EH035, EH035V, Gasoline Engines Limited 2 year Warranty

Subaru SP170, SP210 Gasoline Engines (Private/Residental) Limited 3 year Warranty

Subaru SP170, SP210 Gasoline Engines (Commercial) Limited 1 year Warranty

Subaru Rammer Series, Gasoline Engines Limited 2 year Warranty

Subaru EA190V, EA175V Gasoline Engines (Private/Residental) Limited 3 year Warranty

Subaru EA190V, EA175V Gasoline Engines (Commercial) Limited 1 year Warranty

The repair or replacement of any part or parts under this Limited Warranty shall not extend the term of the engine warranty beyond the

original term as set forth above.

LIMITATIONS AND EXCLUSIONS: This Limited Warranty shall not apply to:

1. Bent or broken crankshaft or resultant damage caused by vibration related to a bent or broken crankshaft. Also, damage caused

by loose engine mounting bolts or improper or imbalanced accessories or blades mounted to the crankshaft.

2. Repairs required because of prolonged storage including damage caused by old or contaminated fuel in the fuel tank, fuel lines

or carburetor, sticky valves or corrosion and rust of engine parts or use of fuel containing more than 10% of ethanol.

3. Repair required due to overheating. (Most often caused by overloaded or clogged or damaged or missing flywheel, fan, inlet air

passages, cooling fins or air shrouds.)

4. Dirt or grit related wear caused by improper air cleaner maintenance (most often resulting in worn piston, piston rings, cylin-

ders, valves, valve guides, carburetor or other internal components).

5. Broken or scored parts caused by low oil level, dirty or improper grade of oil.

6. Engine tune-ups and normal maintenance service including, but not limited to, valve adjustment, normal replacement of service

items, fuel and lubricating oil, etc.

7. Any engine which has been subject to negligence, misuse, accident, mis-application or over-speeding.

8. Any engine that has been installed, repaired, or altered by anyone in a manner which in Subaru’s sole judgment adversely affects

its performance or reliability.

9. Any engine which has been fitted with or repaired with parts or components not manufactured or approved by Subaru which in

Subaru’s sole judgment adversely affects its performance or reliability.

10. Instances when normal use has exhausted the life of a component or an engine.

The customer is responsible for all transportation charges in connection with any warranty work.

Subaru reserves the right to modify, alter or improve any engines or parts without incurring any obligation to modify or replace, any

engine or parts previously sold without such modification, alternation or improvement.

No person is authorized to give any other warranty or to assume any additional obligation on Subaru’s behalf unless made in writing

and signed by an officer of Subaru.

THIS WARRANTY, AND SUBARU’S OBLIGATION HERE UNDER, ARE IN LIEU OF ANY OTHER WARRANTIES OR

OBLIGATIONS OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR

FITNESS FOR A PARTICULAR PURPOSE. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION

ON THE FACE HERE-OF. SUBARU SHALL IN NO EVENT BE LIABLE FOR ANY CONSEQUENTIAL OR INCIDENTAL

DAMAGES.

Notice: FEDERAL EMISSION COMPONENT DEFECT WARRANTY applies

only to engines sold in the United States and U.S. Territories.

Notice: To the engines/generators exported to and used in the countries

other than the U.S.A., warranty service shall be performed by the

distributor in each country in accordance with the standard Subaru

engine/generator warranty policy as applicable.

FEDERAL EMISSIONS COMPONENT DEFECT WARRANTY

EMISSIONS COMPONENT DEFECT WARRANTY COVERAGE - This emission warranty is applicable in all States, except the State of California.

Fuji Heavy Industries Ltd. and Robin America Inc., 905 Telser Road, Lake Zurich, Illinois 60047, (herein “ROBIN AMERICA”) warrant(s) to the initial retail

purchaser and each subsequent owner, that this Nonroad engine (herein “engine”) has been designed, built, and equipped to conform at the time of initial

sale to all applicable regulations of the U.S. Environmental Protection Agency (EPA), and that the engine is free of defects in materials and workmanship

which would cause this engine to fail to conform with EPA regulations during its warranty period.

For the components listed under PARTS COVERED, the service dealer authorized by ROBINAMERICA will, at no cost to you, make the necessary diag-

nosis, repair, or replacement necessary to ensure that the engine complies with applicable U.S. EPA regulations.

EMISSISON COMPONENT DEFECT WARRANTY PERIOD

The warranty period for this engine begins on the date of sale to the initial purchaser and continues for a period of ﬁve years.

PARTS COVERED

Listed below are the parts covered by the Emission Components Defect Warranty. Some of the parts listed below may

require scheduled maintenance and are warranted up to the ﬁrst scheduled replacement point for that part.

EXHAUST EMISSIONS

(1) Fuel Metering System

(i) Carburetor and internal parts (and/or pressure (4) Catalyst or Thermal Reactor System

regulator or fuel injection system). (i) Catalytic Converter, if applicable

(ii) Air/fuel ratio feedback and control system, if applicable. (ii) Thermal Reactor, if applicable

(iii) Cold start enrichment system, if applicable. (iii) Exhaust Manifold, if applicable

(iv) Regulator assy (gaseous fuel, if applicable) (5) Miscellaneous Items Used in Above Systems

(2) Air Induction System (i)Electronic controls, if applicable

(i)Intake manifold, if applicable (ii)Hoses, belts, connectors, and assemblies.

(ii)Air ﬁlter. (iii) Filter lock assy (gaseous fuel, if applicable)

(3) Ignition System

(i)Spark plugs.

(ii)Magneto or electronic ignition system.

(iii)Spark advance/retard system, if applicable.

EVAPORATIVE EMISSIONS

(1) Fuel Line

(2) Fuel Line Fittings

(3) Clamps

(4) Fuel Tank

(5) Fuel Cap

(6) Vapor Hoses

(7) Carbon Canister

(8) Carbon Canister Mounting Brackets

(9) Air Cleaner Purge Port Connector

*Fuji is not liable for the warranty on these parts if these parts are prepared and equipped by the equipment manufacturer. Please refer to the equipment

manufacturer’s warranty.

REPLACEMENT PARTS DISTRIBUTION CENTER

Replacement parts are provided to the market upon request by the customers. Replacement parts distribution center is located at Robin America Inc., 905

Telser Road, Lake Zurich, Illinois 60047. If you have a question regarding your replacement part, you should contact Robin America Inc. at 1-800-277-6246

(toll-free phone number) [email protected] (e-mail address)

OBTAINING WARRANTY SERVICE

To obtain warranty service, take your engine to the nearest authorized Robin America service dealer. Bring your sales receipts indicating date of purchase

for this engine. The service dealer authorized by ROBINAMERICA will perform the necessary repairs or adjustments within a reasonable amount of time

and furnish you with a copy of the repair order. All parts and accessories replaced under this warranty become the property of ROBIN AMERICA.

FUJI HONOR WARRANTY CLAIMING

For owners located more than 100 miles from an authorized service center, the following will be provided to those applicable owners. (excluding the states

with high-altitude areas)