Lehr Lp9.9 s User manual

TABLE OF CONTENTS FOR SERVICE

Call 1-866-941-LEHR (5347)

MODELS:

OPERATOR’S MANUAL

PROPANE POWERED

OUTBOARD MARINE ENGINE

CAUTION: BEFORE OPERATING THIS PRODUCT,

READ AND FOLLOW ALL SAFETY RULES AND

OPERATING INSTRUCTIONS.

THIS PRODUCT CONTAINS CHEMICALS

KNOWN TO THE STATE OF CALIFORNIA

TO CAUSE CANCER, BIRTH DEFECTS OR

OTHER REPRODUCTIVE HARM.

WARNING:

Important Manual Information....................................................1

General Information.........................................................................2

Installation............................................................................................7

Operation..............................................................................................8

Maintenance......................................................................................13

Troubleshooting...............................................................................21

Warranty..............................................................................................25

9.9 HP

THIS PRO

PRODUCT,

LP9.9 S

LP9.9 L

LP9.9 ES

LP9.9 EL

LP9.9 ERS

LP9.9 ERL

WARNING:

PROPANE IS HIGHLY FLAMMABLE, AND ITS

VAPORS CAN EXPLODE IF IGNITED.

SAFETY WARNINGS FOR PROPANE UNITS

CARBON MONOXIDE HAZARD

Burning propane makes Carbon Monoxide (CO). CO is

invisible, has no smell and can kill you. Operating your

outboard engine in an enclosed area can be dangerous.

1. Use only in well ventilated areas. If you experience

headache, drowsiness, or nausea, turn unit o and

get fresh air quickly.

2. Never use where people are sleeping.

3. Follow unit instructions for proper use.

HANDLING & STORAGE OF PROPANE TANKS

1. Keep out of reach of children.

2. Never expose to heat, sparks, or ﬂame.

3. Never store in direct sunlight.

4. Never store at temperatures above 120 degrees F°

(49°C).

5. Never store in living spaces.

6. Always use tank until it is completely empty.

7. Never store in luggage or take on trains or aircraft.

8. To discard, contact local refuse hauler or recycle center.

9. Never put in ﬁre or incinerator. Do not puncture.

NOTE: FIRE/EXPLOSION HAZARD

Propane tanks contain enough gas to cause serious ﬁre,

explosion, and burns. To reduce chance of leak, ﬁre, or

explosion, take the following precautions:

BEFORE USE

1. Check tank and hose seals. Never use with

damaged or missing seals. Clean tank if dirt or rust

particles are in valve area.

2. Attach tanks outdoors away from pilot lights, ﬂames,

sparks or other ignition sources. These sources can

ignite leaking gas.

4. Hand tighten only. Never use tools to tighten.

Overtightening can damage seals.

5. Check for leaks. Put soapy water on connections.

Look for bubbles. Listen for hiss of escaping gas. Feel

for extreme cold. Smell for rotten egg odor. Do not

use if leaking.

6. Read and follow operation instructions.

DURING USE

Never use near pilot lights, ﬂames, sparks, or other

ignition sources. They can ignite leaking gas.

AFTER USE

1. Turn engine o and let cool.

2. Detach tank when not in use.

3. Detach outdoors away from pilot lights, ﬂames, sparks,

or other ignition sources, they can ignite leaking gas.

4. Replace valve and connector caps to keep them clean.

IN CASE OF FIRE

1. Leave area quickly and call for help.

2. Let the tank burn out.

UNDERSTANDING PROPANE

NOTE: Use propane only in tanks speciﬁcally designed

and approved for this unit. Propane is a combustible

gas, it is colorless and thus invisible to the naked eye.

Propane has a harmless odorant added so that it is

possible to smell it. The user should be familiar with the

smell of propane (smells like sulfur or rotten eggs). If at

any time the smell of propane is identiﬁed, turn o the

engine. If the leak persists, remove the propane tank.

Never attempt to operate a unit that has a suspected

leak. Always remove the propane tank from any unit

that has a suspected leak.

TO THE OWNER

Congratulations for purchasing a LEHR propane outboard motor. Thank you for taking the initiative to reduce

pollution in our water, air and environment, by changing to an environmentally friendly fuel source for your

outboard motor. This operator’s manual explains information needed for proper operation, maintenance, and

care of your LEHR propane outboard engine. Understanding and following these instructions will help you

get the most trouble free use from your LEHR propane outboard. If you have any questions about operation

or maintenance of your outboard motor please contact LEHR at1-866-941-LEHR (5347).

READ THE OPERATOR’S MANUAL BEFORE OPERATING YOUR LEHR PROPANE OUTBOARD MOTOR

Read this manual completely and understand the operating procedures before operating the outboard

motor.

Read all manuals supplied with your boat.

Read all labels on the outboard motor and the boat.

If you need any additional information, contact your LEHR dealer or call 1-866-941-LEHR (5347).

WARNING SYMBOLS

Warning symbols indicates: ATTENTION! YOUR SAFETY IS INVOLVED! Failure to follow WARNING

instructions could result in severe injury or death to the machine operator, a bystander, or a person

inspecting or repairing the outboard motor.

NOTE

A “NOTE” provides information to make procedures easier or clearer. To ensure long product life, LEHR

recommends that you use the product and perform the specified periodic inspections and maintenance by

correctly following the instructions in the operator’s manual. Note that if you do not follow these instructions,

not only may the product malfunction, but the warranty will also be voided.

This product is covered under one or more of the following U.S. Patents:

7424886 B1, 7631636 B2, 7730868 B2, 7690347 B2, 7739996 B2, 7874275 B1, 7854219 B2, 7735464 B2.

Other Patents Pending.

IMPORTANT MANUAL INFORMATION

WARNING

GENERAL INFORMATION

Before mounting or operating the outboard motor, completely read the operator’s manual and labels.

Reading them will give you a good understanding of the motor and its operation.

Before operating the boat, read any owners or operators manuals supplied with it and all labels. Be sure

you understand all items from the boat manual as well as this engine manual before operating.

Do not over power the boat with this outboard motor. Overpowering the boat could result in damage to

the boat and injury to all occupants. The rated power of the outboard should be equal to or less than the

rated horsepower capacity of the boat. If the rated horsepower capacity of the boat is unknown, consult

the dealer or boat manufacturer.

Do not attempt to modify the outboard. 0odifications could make the motor unsafe to use and will void the

warranty. Incorrect propeller selection and incorrect use may not only cause engine damage, but also

adversely affect fuel consumption. Consult your dealer for correct use.

Never operate after drinking alcohol or taking drugs. About 50of all boating fatalities involve intoxication.

Have an approved personal flotation device (PFD) on board for every occupant. It is a good idea to wear a

PFD whenever boating. Children and non-swimmers should always wear PFDs, and every one should wear

PFDs when there are potentially ha]ardous boating conditions.

Propane is highly flammable, and its vapors are flammable and explosive. Handle and store propane

carefully. 0ake sure there are no fumes or leaking fuel before starting the engine.

This product emits exhaust gases which contain carbon monoxide, a colorless, odorless gas which may

cause brain damage or death when inhaled. Symptoms include nausea, di]]iness, and drowsiness. .eep

cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.

Check throttle, shift, and steering for proper operation before starting the engine.

Attach the engine stop switch lanyard cord to a secure place on your clothing, or your arm or leg while

operating. If you accidentally leave the helm, the cord will pull from the switch, stopping the engine.

.now the marine laws and regulations where you will be boating and obey them.

.now about the weather forecast. Check weather before boating. Avoid boating in ha]ardous

weather.

Tell some one where you are going. Leave a Float Plan with a responsible person. Be sure to cancel the

Float Plan when you return.

Be aware, alert, and use good judgment when boating. .now your abilities, and be familiar with how your

boat handles under the different boating conditions you may encounter. Operate within your limits,

and the limits of your boat. Always operate at safe speeds, and watch carefully for obstacles and other

traffic.

Always watch carefully for swimmers.

Stay away from swimming areas.

When a swimmer is in the water near you shift into neutral and shut off the engine.

Do not illegally discard empty containers used to replace or replenish oil. For the correct processing of

empty containers ,consult the dealer where you purchased the oil.

When replacing oils used to lubricate the product (engine or gear oil), be sure to wipe away any spilled oil.

Never pour oil without using a funnel or similar device. If necessary, verify the necessary replacement

procedure with the dealer.

Never illegally discard (dump) propane tanks. Consult your local city recycling center on discarding empty

propane tanks.

MODEL YEAR

EX: 12 = 2012

SEQUENCE PER MONTHMONTH

EX: A = JANUARY

B = FEBRUARY

C = MARCH

SERIAL NUMBER

EMISSIONS LABEL

WARNING LABELS:

-DETACH FUEL LINE

WHEN NOT IN USE

-USE ONLY PROPANE

MOTOR FUEL

-FIRE HAZARD

BASIC COMPONENTS

NOTE: All components may not be exactly as shown, also may not be included as standard equipment on

all models.

The outboard motor serial number is stamped on the label attached to the

clamp bracket. Record your outboard motor serial number, you will need it

when ordering spare parts from your LEHR dealer or for reference if your

outboard motor is stolen.

LP9.9S12A1234

11. COOLANT WATER PILOT HOLE

12. TILT LOCK LEVER

13. PULL START HANDLE

14. GEAR SHIFT LEVER

15. TILLER HANDLE

16. ENGINE STOP BUTTON

17. LOW OIL PRESSURE WARNING LIGHT

18. PROPANE CONNECTOR

19. ENGINE RESTRAINT CABLE MOUNT

20. TRANSOM CLAMP HANDLE

1. TOP COWLING

2. SWIVEL BRACKET

3. CLAMP BRACKET

4. TRIM ROD

5. COOLANT WATER INTAKE

6. TOP COWLING LOCK LEVER

7. LOWER COWLING

8. OIL OUTLET

9. LOWER UNIT HOUSING

10. PROPELLER

GENERAL INFORMATION

PROPANE TANK

Use of a LEHR Liquid Draw propane tank is recommended. A DOT approved propane tank may be used,

however extended use at high RPM may result slowed engine performance. Connect the tank to the remote

propane connector with the provided high pressure propane hose.

NOTE: Do not use a hose assembly that includes a pressure regulator.

TILLER HANDLE

To change direction wile operating your boat, move the tiller handle to the left or right as necessary.

GEAR SHIFT LEVER

Your outboard has three gear shift positions to provide operation: Forward(F), Neutral(N), and Reverse(R).

Reduce throttle speed to idle speed before shifting. Always shift outboard into gear with a quick motion.

THROTTLE GRIP

The throttle grip is on the tiller handle. Turn the grip counterclockwise to increase speed and clockwise to

decrease speed.

THROTTLE FRICTION ADJUSTER

A friction device provides adjustable resistance to movement of the throttle grip or the remote control lever,

and can be set according to operator preference. To increase resistance, turn the adjuster clockwise. To

decrease resistance, turn the adjuster counterclockwise.

STANDARD 20 lb. PROPANE TANK

TILLER HANDLE

(F)

(R) (N)

GEAR SHIFT LEVER

THROTTLE GRIP

THROTTLE FRICTION

ADJUSTER

HIGH PRESSURE PROPANE HOSELEHR LIQUID DRAW PROPANE TANK

GENERAL INFORMATION

WARNING: Do not overtighten the throttle friction adjuster. If there is too much resistance, it could be

difficult to move throttle lever or grip, which could result in an accident. When constant speed

is desired, tighten the adjuster just enough to maintain the desired throttle setting.

ENGINE STOP SWITCH

The stop switch lock must be attached to the engine stop switch for the engine to run. The hook should be

attached to a secure place on the operators clothing, or arm or leg. Should the operator fall over board or

leave the helm, the hook will pull out the stop switch lock, stopping ignition to the engine. This will prevent

the boat from running away under power.

WARNING: Attach the engine stop switch hook to a secure place on your clothing, or your arm or leg

while operating. Do not attach the hook to clothing that could tear loose. Do not route the

lanyard where it could be come entangled, preventing it from functioning. Avoid accidentally

pulling the lanyard during normal operation. Loss of engine power means the loss of most

steering control. Also, without engine power, the boat could slow rapidly. This could cause

people and objects in the boat to be thrown forward.

NOTE: The engine cannot be started with the stop switch lock removed.

ENGINE STOP BUTTON

To stop the engine, push and hold the engine stop switch button or pull the lanyard out from the switch.

MANUAL STARTER HANDLE

To start the engine, first gently pull the handle out until resistance is felt. From that position, then pull the

handle straight out quickly to crank the engine.

NOTE: If the shift lever is not in the neutral

position the starter rope will be locked

and cannot be pulled

STEERING FRICTION ADJUSTER

A friction device provides adjustable resistance to the steering mechanism, and can be set according to

operator preference. An adjusting screw or bolt is located on the swivel bracket.

To increase resistance, turn the adjuster bolt clockwise. To decrease resistance, turn the adjuster bolt

counterclockwise.

WARNING

Do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to

steer, which could result in an accident.

ENGINE STOP

BUTTON

ENGINE STOP SWITCH

STOP SWITCH LOCK

HOOK

ENGINE STOP

SWITCH LANYARD

HANDLE

STEERING FRICTION ADJUSTER BOLT

GENERAL INFORMATION

TRIM ROD

The position of the trim rod determines the angle of the outboard motor in relation to the transom

TILT LOCK MECHANISM

The tilt support lock keeps the outboard motor in the tilted up position. If the outboard engine needs to be

tilted up out of the water or to get the propeller higher than the bottom of the boat, unlock the tilt lock

mechanism as shown and tilt the engine upwards. Once the engine is all the way up, the tilt lock mechanism

will engage and lock the engine in the up position. To release the lock to lower the engine pull up on the rear

carrying handle to lift the engine up as far as it will go. While the engine is all the way up, turn the lock lever

to the lock position to disengage it while lowering the engine.

WARNING: Do not use the tilt support bar when trailering the boat. The outboard motor could shake loose

from the tilt support and fall. If the motor cannot be trailered in the normal running position, use

an additional support device to secure it in the tilt position.

TOP COVER LOCK LEVER

Pull the lock lever upwards from the bottom and unhook from the top cover. Then lift the cover from the rear

and remove from the front hook. When installing the cover, make sure the front hook is securely inserted in

it’s slot, then lock the rear lever into place. Check to be sure the rubber seal fits properly on the lower cowling.

Then lock the cover by moving the lever downward.

CARRYING HANDLES

Carrying handles are provided on the front and rear of the outboard motor. The handles enable you to carry

the outboard motor easily with two hands.

CARRYING

HANDLE

CARRYING

HANDLE

FRONT

REAR

LOWER COWLING

RUBBER SEAL

TRIM ROD TRANSOM CLAMP

TRIM ROD

UNLOCK

TILT LOCK LEVER

TILT UP AND LOCK

TILT LOCK LEVER

LOCK

LEVER FRONT HOOK

LOCK

LEVER

LOWER COWLING

TOP COVER

INSTALLATION

Incorrect engine height or obstructions to smooth water flow in front of the propeller can cause propeller

cavitation while the boat is cruising. Cavitation occurs when the engine speeds up momentarily and suddenly

slows as the propeller engages the water. Severe engine damage may result if the motor is operated

continuously while cavitating. During water testing check the buoyancy of the boat, at rest, with its maximum

load. Check that the static water level on the exhaust housing is low enough to prevent water entry in to the

power head, when water rises due to waves when the outboard is not running.

MOUNTING THE OUTBOARD MOTOR

Overpowering a boat could cause severe instability. Do not install an outboard motor with more horsepower

than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate,

consult the boat manufacturer.

This section is intended as reference only. It is not possible to provide complete instructions for every

possible boat and motor combination. Proper mounting depends in part on experience and the specific boat

and motor combination. Improper mounting of the outboard motor could result in hazardous conditions, or

poor handling, loss of control, or boat damage.

Your dealer or other person experienced in proper out board motor mountings should show you how to

mount your motor. Mount the outboard motor on the center line (keel line) of the boat, and ensure that the

boat itself is well balanced. Otherwise the boat will be hard to steer. For boats without a keel or which are

asymmetrical, consult your dealer.

MOUNTING HEIGHT

To run your boat at best efficiency, the water resistance (drag) of the boat and outboard motor must be

made as little as possible. The mounting height of the outboard motor greatly affects the water resistance.

If the mounting height is too high, cavitation tends to occur, thus reducing the propulsion, and if the propeller

tips cut the air, the engine speed will rise abnormally and cause the engine to over heat. If the mounting

height is too low, the water resistance will increase and thereby reduce engine efficiency. Mount the

outboard motor so that the anti-cavitation plate is between the bottom of the boat and a level 25mm (1in.)

below it.

The optimum mounting height of the outboard motor is affected by the boat and motor combination and the

desired use. Test runs at different heights can help determine the optimum mounting height. Consult your

boat manufacturer for further information on determining the proper mounting height.

CLAMPING THE OUTBOARD MOTOR

1. Place the outboard motor on the transom so that it is positioned as close to the center as possible. Tighten

the transom clamp screws evenly and securely. Occasionally check the clamp screws for tightness during

operation of the outboard motor because they could become loose due to engine vibration.

WARNING: Loose clamp screws could allow the outboard motor to fall off or move on the transom. This could

cause loss of control and serious injury. Make sure the transom screws are tightened securely.

Occasionally check the screws for tightness during operation.

2. If an engine restraint cable or chain attachment is equipped on your boat, the cable or chain should be

used. Attach one end of the engine restraint cable attachment to the engine clamp and the other to a

secure mounting point on the boat. Otherwise the engine could be completely lost if it accidentally falls

off the transom.

CENTER LINE

(KEEL LINE)

ANTI-CAVITATION PLATE

ATTACH ONE END OF THE RESTRAINT

CABLE THROUGH THIS CLAMP MOUNT

AND ONE END SECURELY ON THE BOAT

OPERATION

PRE-OPERATION CHECKS

WARNING: If anything in the pre-operation check is not working properly, have it inspected and repaired

before operating the outboard motor. Failure to do so could result in an accident.

CONTROLS

Check throttle, shift, and steering for proper operation before starting the engine.

The controls should work smoothly, without binding or unusual free play.

Look for loose or damaged connections.

Check operation of the starter and stop switches when the outboard motor is in the water.

If the engine has not been used in some time, rev it in neutral to be sure it returns to idle before putting it

in gear.

ENGINE

Check the engine and engine mounting.

Look for loose or damaged fasteners.

Check the propeller for damage.

CHECKING THE ENGINE OIL LEVEL

1. Put the outboard motor in an upright position (not tilted).

2. Insert the oil dipstick all the way in. Pull it out and check the oil level using the oil dipstick to be sure

the level falls between the upper and lower marks. Fill with oil if it is below the lower mark, or drain to

the specified level if it is above the upper mark.

Recommended engine oil:

Use a quality 4-stroke motor oil.

Engine oil type:

10W-30

Engine oil quantity:

0.80 US qt (0.8L)

WARNING: ALL ENGINES ARE SHIPPED FROM THE FACTORY WITHOUT ENGINE OIL.

ADD OIL BEFORE STARTING ENGINE.

FUEL

Use a LEHR Liquid Draw propane tank or any DOT approved propane tank.

Check to be sure you have plenty of fuel for your trip.

Make sure there are no fuel leaks or propane fumes.

REFUELING INSTRUCTIONS

WARNING: PROPANE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND E;PLOSIVE!

Stop engine before refueling.

Do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition.

Refuel in a well-ventilated area.

Refuel portable fuel tanks off the boat.

Have your propane tanks refilled or exchanged at a certified propane refueling or exchange center.

USE THE CORRECT PROPANE TANK

NOTE: Use of a LEHR Liquid Draw tank is recommended.

A standard U.S. 20 lb. DOT approved propane tank may be used, however extended use at high R.P.M. may

result in slowed engine performance.

UPPER LEVEL MARK

LOWER LEVEL MARK

OIL DIPSTICK

OPERATION

CONNECTING THE PROPANE TANK

1. Make sure the engine is off and the propane tank is closed.

2. Unscrew the brass connector plug from the propane connector on the engine.

3. Connect the high pressure propane hose to the propane connector by turning the connector on the hose clockwise.

4. Connect the propane hose to the propane tank. The threads that connect to the propane tank are left

hand turn.

5. Open the valve on the tank slowly. Opening the valve too quickly could cause the sudden surge of

propane to activate a safety flow limiting device within the tank.

NOTE: Use only a high pressure propane hose. Do not use a hose with a regulator attached.

NOTE: When a new hose from a propane tank is being used, it may take a few seconds for the propane to

flow to reach the engine. The engine may start and then die, or not start immediately. A few extra

pulls of the starter are usually sufficient for the flow to reach the engine.

LEHR LIQUID DRAW

PROPANE TANK

HIGH PRESSURE

PROPANE HOSE

BRASS CONNECTOR PLUG

PROPANE CONNECTOR

HIGH PRESSURE

PROPANE HOSE

PROPANE CONNECTOR

LEFT HAND

TURN THREADS

OPERATION

STARTING THE ENGINE

1. Place the gear shift lever in neutral. The engine is equipped with a lockout which will prevent the stater

rope from being pulled if the engine is engaged in forward or reverse. If you engine is electric start, it

will not start if it is engaged in forward or reverse.

WARNING: Keep hands, hair, and clothing away from rotating parts while the engine is running. Do not

touch or remove electrical parts when starting or during operation.

2. Attach the stop switch lanyard to a secure place on your clothing, or your arm or leg. Then install the stop

switch lock on the other end of the lanyard into the engine stop switch.

Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard where it could become

entangled, preventing it from functioning.

Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means the loss of

most steering control. Also, without engine power, the boat could slow rapidly. This could cause people

and objects in the boat to be thrown forward.

Place

the

throttle

grip

the

"START"

position

If the engine is cold, set the position about 1/8 to 1/4 of

a turn faster than the “start” or Idle position.

4. Pull the manual starter handle slowly until you feel resistance. Then give a strong pull straight out to

start the engine. Repeat if necessary.

5. After the engine starts, slowly return the manual starter handle to the original position before releasing it.

6. Slowly return the throttle grip to the fully closed position.

NOTE: If the engine fails to start after 4 or 5 tries, open the throttle a small amount more (between 1/4 - 1/3

throttle) and try again. Also if the engine is warm and fails to start, open the throttle a small amount

and try to start the engine again. If the weather is below 45 degrees F, open the throttle to 1/4 - 1/2

to start cold.

ELECTRIC START MODELS

Place the gear shift lever in neutral. The engine is equipped with a neutral safety switch, which will prevent

the starter to engage if the engine is in gear. Place the throttle in the start position. Press the start button

and release after the engine is running.

STOP SWITCH LANYARD

START POSITION

(N) NEUTRAL POSITION

GEAR SHIFT LEVER

1/8 TO 1/4 THROTTLE

START BUTTON

ENGINE STOP SWITCH

STOP SWITCH LOCK

OPERATION

WARMING UP ENGINE

1. Warm up the engine by operating at 1/2 throttle or less for the first 4 minutes. Failure to do so may cause

the engine to stall in cold weather, and will shorten engine life.

2. Check for a steady flow of water from the cooling water pilot hole.

NOTE: A continuous flow of water from the cooling water pilot hole shows that the water pump is pumping

water through the cooling passages. If water is not flowing out of the hole at all times while the

engine is running, over heating and serious damage could occur. Stop the engine and check whether

the cooling water inlet on the lower case or the cooling water pilot hole is blocked. Consult your

dealer if the problem cannot be located and corrected.

SHIFTING

WARNING: Before shifting, make sure no swimmers are in the water near your boat.

1. Place the throttle in the slowest position.

2. Move the gear shift lever quickly to the desired gear from neutral to forward or reverse.

WARNING: When operating your outboard engine in reverse, go slowly. Do not attempt to open the throttle

more than half throttle in reverse. Otherwise your boat can become unstable which can result

in loss of control or a possible accident.

STOPPING ENGINE

1. Push and hold the engine stop button until the engine completely stops.

2. After the engine has stopped disconnect or close the valve on the propane tank.

ADJUSTING BOAT TRIM

WARNING: Stop the engine before adjusting the trim angle. Use care to avoid being pinched when removing

the trim rod. Use caution when trying a trim position for the first time. Increase speed gradually

and watch for any signs of instability or control problems. Improper trim angle can cause loss of

control.

Tilt the engine up slightly.

Reposition the rod inside the desired hole.

To raise the bow (”trim-out”), move the trim rod away from the transom.

To lower the bow (”trim-in”), move the trim rod closer to the transom.

Test the boat with the trim set to different angles to find the position that works best for your boat and

operating conditions.

NOTE: The outboard motor trim angle can be changed approximately 4 degrees by shifting the trim rod one

hole.

TRIM ROD

COOLING WATER

PILOT HOLE

OPERATION

When the boat is on plane, a bow-up attitude results in less drag, greater stability and efficiency. This is

generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the bow of the boat may

have a greater tendency to steer to one side or the other. Compensate for this as you steer. The trim tab

can also be adjusted to help to help offset this effect. When the bow is down, it is easier to accelerate from

a standing start onto plane.

BOW UP

Too much trim-out puts the bow of the boat too high in the water. Performance and economy are decreased

because the hull of the boat is pushing the water and there is more drag. Excessive trim-out can also cause

the propeller to ventilate, which reduces performance further, and the boat may “porpoise” (hop in the water)

which could throw the operator and passengers overboard.

BOW DOWN

Too much trim-in causes the boat to “plow” through the water, decreasing fuel economy and making it hard

to increase speed. Operating with excessive trim-in at higher speeds also makes the boat unstable.

Resistance at the bow is greatly increased, heightening the danger of “bow steering” and making operation

difficult and dangerous.

NOTE: Depending on the type of boat, the outboard motor trim angle may have little effect on the trim of the

boat when operating.

TILTING UP AND DOWN

If the engine will be stopped for some time and the boat is moored in shallows, the outboard motor should

be tilted up to protect the propeller and casing from damage from collision with obstructions, and also to

reduce salt corrosion.

WARNING: Before tilting the outboard motor, follow the procedure under “Stopping Engine” in this section.

Never tilt the outboard motor while the engine is running. Sever damage from overheating can

result. Do not tilt the engine by pushing the tiller handle alone because this could break the

handle. Hold from the rear of the top cover to help tilt the engine up and down. Keep the power

unit higher than the propeller at all times otherwise water could run into the cylinder and cause

damage. The outboard motor cannot be tilted while in reverse.

WARNING: Be sure all people are clear of the outboard motor when tilting up and down, also be careful not

to pinch any body parts between the drive unit and engine bracket.

Follow the procedures in “Tilt Lock Mechanism” on pg 6 for tilting the engine up and down instructions.

PULL FROM HERE

WATER LINE

MAINTENANCE

STORE WITH THE TILLER SIDE DOWN

TRANSPORTING AND STORING THE OUTBOARD MOTOR

WARNING: Leaking fuel is a fire hazard. When transporting or storing the outboard motor, disconnect the

propane connector to prevent the possibility of fuel from leaking. Use care when transporting

the fuel tank whether in boat or car.

Never get under the lower unit while it is tilted, even if a motor support bar is used. Severe injury could occur

if the outboard motor accidentally falls.

Do not use the tilt support lever when trailering the boat. The outboard motor could shake loose from the tilt

support and fall. If the motor can not be trailered in the normal running position, use an additional support

device to secure it in the tilt position.

The outboard motor should be trailered and stored in the normal running position. If there is insufficient road

clearance in this position, then trailer the outboard motor in the tilt position using a motor support device such

as a transom saver bar.

When transporting or storing the outboard motor while removed from a boat, keep the outboard motor in the

attitudes shown.

WARNING: This engine weighs at least 88.7 lbs. (40 Kg). Use a hoist or an extra person to help when ever

possible when lifting and moving the engine is required.

STORING THE OUTBOARD MOTOR

NOTE: Place a towel or something similar under the outboard motor to protect it from damage.

When storing your outboard motor for prolonged periods of time (2 months or longer), several important

procedures must be performed to prevent excessive damage.

NOTE: Cooling system flushing is essential to prevent the cooling system from clogging up with salt sand,

or dirt. In addition, fogging / lubricating of the engine is mandatory to prevent excessive engine

damage due to rust. Perform the flushing and fogging at the same time.

To prevent problems which can be caused by oil entering the cylinder from the sump, keep the outboard

motor in the attitude shown when transporting and storing it. If storing or transporting the outboard motor

on its side (not upright), put it on a cushion after draining the engine oil.

Do not place the outboard motor on its side before the cooling water has drained from it completely,

otherwise water may enter the cylinder through the exhaust port and cause engine trouble.

Store the outboard motor in a dry, well ventilated place, not in direct sunlight.

STORE IN THE UPRIGHT POSITION

CARRY FROM THE HANDLES

FLOOR

CUSHION

MAINTENANCE

PROCEDURE FOR FLUSHING AFTER SEA WATER USE

If the engine has been operated in saltwater, it should always be flushed with fresh water after each use before being

stored. Do

not

run

the

engine

without

supplying

with

cooling

water.

Either

the

engine

water

pump

will

damaged

the engine will be damaged from overheating. Before starting the engine, be sure to supply

water to the cooling water passages.

1. Wash the outboard motor body using fresh water.

2. Remove the engine top cowling.

3. Install the outboard motor on a test tank, or submerge the drive in water in some way, as long as the

outboard is safely and securely mounted to a solid object.

4. Fill the tank with fresh water to above the level of the anti-cavitation plate. If the freshwater level is

below the level of the anti-cavitation plate, or if the water supply is insufficient, engine seizure may

occur.

5. Run the engine at a fast idle for a few minutes in neutral position.

WARNING: Never engage forward gear if engine is running when not attached to a boat. An exposed,

spinning propeller is dangerous. Even in a tank, the engine can suddenly move when shifted

into gear causing the tank or motor to shift and expose the propeller which could result in

serious injury.

NOTE: Do not touch or remove electrical parts when starting or during operation. Keep hands, hair, and

clothes away from the flywheel and other rotating parts while the engine is running.

6. Remove the out board motor from the test tank.

7. Wipe the water off the powerhead. Install the top cowling.

8. Drain the cooling water completely out of the motor. Clean the body thoroughly.

WATER SURFACE

LOWEST WATER LEVEL

ANTI-CAVITATION PLATE

WATER INLET

MAINTENANCE

Initial Every

Item Actions 10 hours 50 hours 100 hours 200 hours

month)

months)

(6months)

(

year)

Anodes(s) Inspection/replacement

Cooling water passages Cleaning

Cover clamps Inspection

Fuel system Inspection

Gear oil Change

Greasing points Greasing

Idling speed Inspection /adjustment

Propeller and cotter pin Inspection/replacement

Shift link Inspection/adjustment

Thermostat Inspection/replacement

Throttle link/throttle

cable/ throttle Inspection/adjustment

Water pump Cleaning/adjustment/replacement

Engine oil Inspection/change

Spark plug(s) Inspection/adjustment/replacement

Valve clearance Inspection/adjustment

LUBRICATION

1. Remove the spark plug and spray some fogging oil into the cylinders if the engine will not be operated

for several months.

2. Grease the spark plug threads and install the spark plug and torque to proper specification.

3. Change the gear oil. Inspect the oil for the presence of water that indicates a leaky seal.

4. Grease all grease fittings.

CLEANING THE OUTBOARD MOTOR AFTER USE

1. After use wash the exterior of the outboard motor with fresh water.

2. Flush the cooling system with fresh water.

CHECKING PAINTED SURFACE OF MOTOR

1. Check the motor for scratches, nicks, or flaking paint. Areas with damaged paint are more likely to

corrode. If necessary, clean and paint the areas.

NOTE: Be sure to turn off the engine when you perform maintenance unless otherwise specified. If you or

the owner are not familiar with machine servicing, this work should be done by your LEHR dealer

or other qualified mechanic.

REPLACEMENT PARTS

If replacement parts are necessary, use only genuine LEHR parts or parts of the same type and of

equivalent strength and materials. Any part of inferior quality may malfunction, and the resulting loss of

control could endanger the operator and passengers. LEHR genuine parts and accessories are available

from your LEHR dealer, or directly from LEHR.

MAINTENANCE CHART

Frequency of maintenance operations may be adjusted according to the operating conditions, but the

following table gives general guidelines. Refer to the sections in this chapter for explanations of each

owner-specificaction. When operating in salt water or dirty water, the engine should be flushed with clean

water after each use.

The “ ” symbol indicates the check-ups which you may carry out yourself.

The “ ” symbol indicates work to be carried out by your LEHR dealer.



MAINTENANCE

GREASING

NOTE: Use only water resistant grease.

Grease in these areas:

Spark plug gap:

0.020-0.024 in (0.5-0.6 mm)

Spark plug torque:

18.4 ft-lb (25.0 Nm)

SPARK PLUGS

WARNING: When removing or installing a spark plug, be careful not to damage the insulator. A damaged

insulator could allow external sparks, which could lead to explosion or fire.

Before fitting the spark plug, measure the electrode gap with a wire thickness gauge. Adjust the gap to

specification if necessary.

When fitting the plug, always clean the gasket surface and use a new gasket. Wipe off any dirt from the

threads and screw in the spark plug to the correct torque.

NOTE: If a torque-wrench is not available when you are fitting a spark plug, a good estimate of the correct

torque is 1/4 to 1/2 a turn past finger tight. Have the spark plug adjusted to the correct torque as

soon as possible with a torque wrench.

Spark plug ID mark (i.e. NGK)

Standard spark plug: BR6HS

Spark plug Boots

INSPECTION CHECKPOINTS

Periodically check the fuel system for leaks. With the propane tank attached, and the engine cover removed,

inspect the following fuel system parts for leakage. Leaks can be identified by smell of propane or carefully

listening for a hissing sound of escaping gas. Suspected leaks can be verified by applying soapy water

solution on the area and observing bubbles forming.

The spark plug is an important engine part and is easy to inspect. The condition of the spark plug can

indicate the condition of the engine. Normally, the spark plug in a propane engine will stay very clean.

Oily or dark color ceramic could indicate a malfunction. Do not attempt to diagnose any problems yourself.

Instead, take the outboard motor to a LEHR dealer. You should periodically remove and inspect the spark

plug because the electric arcing will cause the spark plug to slowly erode and the gap will increase.

If electrode erosion becomes excessive, or if carbon and other deposits are excessive, you should replace

the spark plug with another of the correct type.

ADJUSTING IDLING SPEED

WARNING: Do not touch or remove electrical parts when starting or during operation. Keep hands, hair, and

clothes away from the flywheel and other rotating parts while the engine is running.

CAUTION: This procedure must be performed while the outboard motor is in the water. A flushing attachment

or test tank can be used.

NOTE: A diagnostic tachometer should be used for this procedure. Results may vary depending on whether

testing is conducted with the flushing attachment, in a test tank, or with the outboard motor in the

water.

1. Start the engine and allow it to warm up fully in neutral until it is running smoothly.

NOTE: Correct idling speed inspection is only possible if the engine is fully warmed up. If not warmed up

fully, the idle speed will measure higher than normal. If you have difficulty verifying the idle speed,

or the idle speed requires adjustment, consult a LEHR dealer or other qualified mechanic.

2. Verify whether the idle speed is set to specification (1050 + 150 RPM). Adjust the speed by turning the

idle speed screw with a phillips head screw driver.

CHANGING ENGINE OIL

WARNING: Avoid draining the engine oil immediately after stopping the engine. The oil is hot and should

be handled with care to avoid burns.

Be sure the outboard motor is securely fastened to the transom or a stable stand.

Do not overfill the oil, and be sure the outboard motor is upright (not tilted) when checking and changing

the engine oil.

If the oil level is above the upper level mark, drain until the level meets the specified capacity. Overfilling

the oil could cause leakage or damage.

Change the engine oil after the first 10 hours of operation, and every 100 hours or at 6 month intervals

thereafter. Otherwise the engine will wear quickly.

NOTE: Change the engine oil when the oil is still warm.

1. Put the outboard motor in an upright position (not tilted).

2. Prepare a suitable container that holds a larger amount than the engine oil capacity. Loosen and remove

the drain plug while holding the container under the drain hole. The oil drain plug is located on the

tiller side of the engine. Use a 12 mm socket wrench. Then remove the oil fill cap. Let the oil drain

completely. Wipe up any spilled oil immediately.

3. Put a new gasket on the oil drain plug. Apply a light coat of oil to the gasket and install the drain screw.

NOTE: If a torque wrench is not available when you are installing the drain screw, finger tighten the screw

just until the gasket comes in contact with the surface of the drain hole. Then tighten 1/4 to 1/2 turn

more. Tighten the drain screw to the correct torque with a torque wrench as soon as possible.

4. Add the correct amount of oil through the filler hole. Install the filler cap.

MAINTENANCE

IDLE SPEED SCREW

OIL DRAIN PLUG

TORQUE TO 10 ft-lb (13.6 N-m)

CARBURETOR

NOTE: Inspect the following for any source of a fuel leak. A propane sniffing device may be used to inspect.

Fuel system parts leakage

Fuel line joint leakage

Fuel line cracks or other damage

Fuel connector leakage

OIL FILL CAP

MAINTENANCE

5. Make sure that there are no oil leaks. Continued operation with an oil leak could cause severe engine

damage.

NOTE: Change the oil more often when operating the engine under adverse conditions such as extended

trolling.

CHECKING WIRING AND CONNECTORS

Check that each grounding wire is properly secured.

Check that each connector is engaged and secured.

EXHAUST LEAKAGE

Start the engine and check that no exhaust leaks from the joints between the exhaust cover, cylinder

head, and cylinder.

WATER LEAKAGE

Start the engine and check that no water leaks from the joints between the exhaust cover, cylinder head,

cylinder, thermostat housing, and thermostat hose.

CHECKING PROPELLER

WARNING: You could be seriously injured if the engine accidentally starts when you are near the propeller.

Before inspecting, removing, or installing the propeller, remove the spark plug cap from the

spark plug. Also, place the shift control in neutral, and remove the lanyard from the engine stop

switch.

Check each of the propeller blades for wear, erosion from cavitation, or other damage.

Check the propeller shaft for damage.

Check the splines for wear or damage.

Check for fish line tangled around the propeller shaft.

Check the propeller shaft oil seal for damage.

REMOVING THE PROPELLER

1. Straighten the cotter pin and pull it out using a pair of pl iers.

2. Remove the propeller nut and washer.

3. Remove the propeller and thrust washer.

1. COTTER PIN

2. PROPELLER NUT

3. WASHER

4. PROPELLER

5. THRUST WASHER

6. PROPELLER SHAFT AND SPLINES

Recommended engine oil: 10W - 30

4-stroke outboard motor oil

Engine oil quantity:

0.8L (0.85

qt)

OIL DIPSTICK HANDLE

6. Turn off the engine and wait 3 minutes. Recheck the oil level using the oil dipstick to be sure the level

falls between the upper and lower marks when the dipstick is inserted in all the way. Add oil if the level

is below the lower mark, or drain to the specified level if it is above the upper mark (see pg. 8).

7. Dispose of used oil according to local regulations.

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