LEHR LP 5.0S User manual

LEHR | ALL RIGHTS RESERVED 2010-2011
TABLE OF CONTENTS FOR SERVICE
Call 1-866-941-LEHR (5347)
5 HP
MODEL:
LP 5.0S
LP 5.0L
OPERATOR’S MANUAL
PROPANE POWERED
OUTBOARD MARINE ENGINE
CAUTION: BEFORE OPERATING THIS PRODUCT,
READ AND FOLLOW ALL SAFETY RULES AND
OPERATING INSTRUCTIONS.
LEHR | ALL RIGHTS RESERVED 2012-2013
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
Specications.....................................................................................24
Warranty..............................................................................................25
B
E
N
B
O
A
R
D
M
A
R
I
N
E
E
N
O
U
T
B
N
G
I
N
RA
TI
NG THIS PR
O
PR
OD
UC
T,
L
SAFETY RULE
S
AN
D
AN
D
O
NS

* Green Key- is a trademark of the Coleman company
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
1. Keep out of reach of children.
2. Never expose cylinder to heat, sparks, or ame.
Never store in direct sunlight.
Never store at temperatures above 120 degrees F°
(49°C).
3. Never store in living spaces.
4. Always use cylinder until it is completely empty.
5. Never rell a disposable cylinder. Relling may cause
an explosion. Federal law forbids transportation if
relled, a penalty up to $500,000, and 5 years
imprisonment (49 U.S.C. 5124).
6. Never store in luggage or take on trains or aircraft.
7. To discard, contact local refuse hauler or recycle center.
Never put in re or incinerator. Do not puncture.
If your cylinder was purchased with a “Green Key” * or
similar device, install it when empty and cylinder may
be recycled with other steel items.
NOTE: FIRE/EXPLOSION HAZARD
Contains enough gas to cause serious re, explosion,
and burns. To reduce chance of leak, re, or explosion,
take the following precautions:
BEFORE USE
1. Check cylinder and appliance seals. Never use with
damaged or missing seals. Discard cylinder if dirt or
rust particles are in valve area.
2. Turn engine o.
3. Attach cylinder outdoors away from pilot lights, ames,
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, ames, sparks, or other
ignition sources. They can ignite leaking gas.
AFTER USE
1. Turn engine o and let cool.
2. Detach cylinder when not in use.
3. Detach outdoors away from pilot lights, ames, sparks,
or other ignition sources, they can ignite leaking gas.
4. Replace cap to keep valve clean.
IN CASE OF FIRE
1. Leave area quickly and call for help.
2. Let the cylinder burn out.
UNDERSTANDING PROPANE
NOTE: Use propane only in containers and/or remote
larger tanks specically 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 identied, turn o the engine. If the leak persists,
remove the pro-pane canister. Never attempt to operate
a unit that has a suspected leak. Always remove the
propane canister from any unit that has a suspected leak.

LEHR | ALL RIGHTS RESERVED 2012-2013 1
TO THE OWNER
Thank you for purchasing a LEHR propane outboard engine. This operator’s manual explains information
needed for proper operation, maintenance, and care of your LEHR outboard motor. Understanding and
following these instructions will help you get the most trouble free use from your LEHR outboard. If you
have any questions about operation or maintenance of your outboard motor please contact LEHR at
1-866-941-LEHR (5347).
READ THE OPERATOR’S MANUAL BEFORE OPERATING YOUR LEHR OUTBOARD MOTOR
Read this manual. Read all manuals supplied with the 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
Warning symbol 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

LEHR | ALL RIGHTS RESERVED 2012-2013
2
GENERAL INFORMATION
• Before mounting or operating the outboard motor, completely read 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. Modifications 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 hazardous boating conditions.
• Propane is highly flammable, and its vapors are flammable and explosive. Handle and store propane
carefully. Make 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, dizziness, and drowsiness. Keep
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.
• Know the marine laws and regulations where you will be boating and obey them.
• Know about the weather forecast. Check weather before boating. Avoid boating in hazardous
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. Know 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) disposable propane tanks. Consult your local city recycling center on
discarding empty propane tanks.

LEHR | ALL RIGHTS RESERVED 2012-2013 3
GENERAL INFORMATION
SERIAL NUMBER EMISSIONS LABEL WARNING LABEL
BASIC COMPONENTS
NOTE: May not be exactly as shown, also may not be included as standard equipment on all models.
1
2
3
4
5
6
11
8
7
1. TOP COVER
2. TOP COVER LOCK LEVER
3. CARRYING HANDLE
4. STEERING FRICTION SCREW
5. ANTI-CAVITATION PLATE
6. PROPELLER
7. COOLING WATER INLET
8. TRIM ROD
9. CLAMP BRACKET
10. THROTTLE FRICTION ADJUSTER
11. THROTTLE LEVER / TILLER HANDLE
12. BOTTLE BRACKET CLAMP
13. PULL START HANDLE
14. ENGINE SHUT-OFF SWITCH
15. REMOTE PROPANE CONNECTOR
16. CLAMP SCREWS
17. ROPE ATTACHMENT
18. GEAR SHIFT LEVER
19
13
14
15
16
17
9
12
10
1
2
3
12
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.
19
20
19. RUBBER TANK PLUG
20. BRASS CONNECTOR PLUG

LEHR | ALL RIGHTS RESERVED 2012-2013
4
GENERAL INFORMATION
FUEL TANK
Use a standard 16.4 oz. (1 lb.) propane canister connected to the rear propane tank position or any larger
DOT approved propane tank connected to the remote propane connector with an approved high pressure
propane hose. Do not use a hose assembly that includes a pressure regulator.
TILLER HANDLE
To change direction, move the tiller handle to the left or right as necessary.
GEAR SHIFT LEVER
Your outboard has two gear shift positions to provide operation: Forward(F), Neutral(N), and Reverse(R).
Reduce throttle speed to idle speed. 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.
16.4 OUNCE
1 LB. / 465 GRAMS REMOTE PROPANE TANK
THROTTLE GRIP
THROTTLE FRICTION
ADJUSTER

LEHR | ALL RIGHTS RESERVED 2012-2013 5
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 this 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.
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 clockwise. To decrease resistance, turn the adjuster
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
ENGINE STOP SWITCH LOCK
HOOK
ENGINE STOP SWITCH LANYARD

LEHR | ALL RIGHTS RESERVED 2012-2013
6
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, push down on the tiller
handle while lifting up in the rear carrying handle. 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, lift up on the
lock lever 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
To remove the engine top cover, remove the 1 lb. propane tank or rubber plug. Pull the lock levers upwards
from the bottom and unhook from the top cover. Then lift the cover. When installing the cover, check to be
sure it fits properly on the rubber seal. Then lock the cover by moving the levers 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.
TILT LOCK LEVER
LOCK
LEVER
CARRYING
HANDLE
CARRYING
HANDLE
FRONT
REAR

LEHR | ALL RIGHTS RESERVED 2012-2013 7
INSTALLATION
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)
aa
ANTI-CAVITATION PLATE
RESTRAINT CABLE

LEHR | ALL RIGHTS RESERVED 2012-2013
8
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. Screw the oil dipstick all the way in. Unscrew it 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:
4-stroke motor oil with a combination of the following SAE and API oil classifications
Engine oil type SAE:
10W-30
Engine oil grade API:
SE,S F, SG, SH, SJ, SL
Engine oil quantity:
0.53USqt (0.5L)
WARNING: ALL ENGINES ARE SHIPPED FROM THE FACTORY WITHOUT ENGINE OIL.
ADD OIL BEFORE STARTING ENGINE.
FUEL
• Check to be sure you have plenty of fuel for your trip.
• Make sure there are no fuel leaks or propane fumes.
FUELING INSTRUCTIONS
WARNING: PROPANE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE!
• 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.
USE THE CORRECT PROPANE CANISTER
Always use propane canisters or “bottles” that are the correct size. The 17 ounce or 16.4 ounce / 465g
canisters that are approximately 3-7/8 inches (9.5 cm) in diameter are the correct canisters.
NOTE: Do not use smaller diameter canisters as they will not latch securely to the unit and vibration may
cause damage to the unit and potentially result in a dangerous leak.
OIL DIPSTICK
UPPER LEVEL MARK
LOWER LEVEL MARK
OIL DIPSTICK

LEHR | ALL RIGHTS RESERVED 2012-2013 9
OPERATION
INSTALLING THE PROPANE CANISTER
1. Make sure the engine is off.
2. If the propane canister to be installed has a protective plastic cap over the threaded end, remove it.
Make sure the canister clamp is in the unlatched position. Ifthe rubbertank plug is in place, remove it.
Save the plug for future use.
3. Pull the propane connector out from the bottle bracket through the canister clamp.
4. Insert the propane connector onto the threaded end of the canister and screw it clockwise onto threads.
Screw it until snug. Do not over tighten.
NOTE: It may be normal to hear or smell a slight momentary leak of propane as the connector is being
screwed in. Make sure that the connector is installed tight enough that any leakage stops.
Hand tight is sufficient.
5. Insert the connected propane canister through the canister clamp and against the bottle bracket until it
stops against it.
6. Latch the canister clamp closed.
REMOVING THE PROPANE CANISTER
1. Make sure the engine is off.
2. Unlatch the canister clamp, pull the canister out, and remove the propane connector by turning it
counterclockwise.
3. Remove the empty canister.
4. Dispose of empty propane canisters in accordance to Federal, State and Local regulations.
CONNECTING REMOTE PROPANE TANK
1. Make sure the engine is off and the propane tank is closed.
2. Connect the remote hose to the remote propane tank. Use only a high pressure propane hose. Do not
use a hose with a regulator attached.
3. Unscrew the brass connector plug from the remote propane connector on the engine. Connect the remote hose to
the remote propane connector.
4. If the engine is intended to be operated solely on the larger remote tank, insert the brass connector plug into the
rear propane connector for the small bottle and install the provided rubber tank plug, and clamp it into place.
NOTE: When a new hose from a remote 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.
REMOTE PROPANE TANK
REMOTE HOSE
CANISTER
CONNECTOR
CLAMP
BOTTLE BRACKET
REMOTE
CONNECTOR
e
r remo
te
t
an
k,
i
ns
er
t
th
e
p
rovided rubber tank pl
u
RUBBER TANK PLUG
BRASS CONNECTOR PLUG

LEHR | ALL RIGHTS RESERVED 2012-2013
10
OPERATION
STARTING 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.
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 lock
plate 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.
3. Place the throttle grip in 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 (between 1/8 - 1/4 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.
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 will cause
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.
COOLING WATER
PILOT HOLE
(BOTTOM VIEW OF ENGINE)
GEAR SHIFT LEVER STOP SWITCH LANYARD
THROTTLE GRIP

LEHR | ALL RIGHTS RESERVED 2012-2013 11
OPERATION
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 the propane canister.
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.
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.
TRIM ROD

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: 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.
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 because this could break the handle.
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.
LEHR | ALL RIGHTS RESERVED 2012-2013
12
OPERATION
PROCEDURE FOR TILTING UP
1. Place the gear shifter lever in neutral and face the outboard motor forward.
2. Tighten the steering friction adjuster by turning it clockwise to prevent the motor from turning freely.
3. Hold the carrying handle and tilt the engine up fully until the tilt support lever automatically locks.
PROCEDURE FOR TILTING DOWN
1. Slightly tilt the outboard motor up.
2. Slowly tilt the outboard motor down while pulling the tilt support lever up.
3. Loosen the steering friction adjuster by turning it counterclockwise, and adjust the steering friction
according to operator preference.
TILT SUPPORT
LEVER
STEERING FRICTION
ADJUSTER
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.

LEHR | ALL RIGHTS RESERVED 2012-2013 13
MAINTENANCE
CARRY FROM THE HANDLES
STORE WITH THE HANDLE 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.
STORE IN THE UPRIGHT POSITION

LEHR | ALL RIGHTS RESERVED 2012-2013
14
MAINTENANCE
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.
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 it with cooling water. Either the engine water pump will be
damaged or 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 cover.
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. Install the top cover.
8. Drain the cooling water completely out of the motor. Clean the body thoroughly.
WATER SURFACE
LOWEST WATER LEVEL
ANTI-CAVITATION PLATE

LEHR | ALL RIGHTS RESERVED 2012-2013 15
MAINTENANCE
Initial Every
Item Actions 10 hours 50 hours 100 hours 200 hours
(1 month) (3 months) (6months) ( 1 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 cylinder.
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.
•

LEHR | ALL RIGHTS RESERVED 2012-2013
16
MAINTENANCE
GREASING
NOTE: Use only water resistant grease.
Grease in these areas:
Spark plug gap:
0.020-0.024in (0.5-0.6mm)
Spark plug torque:
l8.4ft-lb (25.0Nm)
SPARK PLUG
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: BR6H8
Spark plug Boot
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.

LEHR | ALL RIGHTS RESERVED 2012-2013 17
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 (2000 150 RPM). Adjust the speed by turning the
idle speed screw with a phillips head screwdriver as shown.
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.
+
MAINTENANCE
IDLE SPEED SCREW
OIL DRAIN PLUG
TORQUE TO 10 lb/ft (13.6 N-m)
(BOTTOM VIEW OF ENGINE)
CARBURETOR
NOTE: Inspect the following for any source of a fuel leak.
• Fuel system parts leakage
• Fuel line joint leakage
• Fuel line cracks or other damage
• Fuel connector leakage
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
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.
bottom of the engine near the shift lever. Use a 13 mm socket wrench. Then remove the oil filler cap.
Let the oil drain completely. Wipe up any spilled oil immediately.

LEHR | ALL RIGHTS RESERVED 2012-2013
18
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.
t 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 pliers.
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
1
23
4
5
6
Recommended engine oil: 10W - 30
4-stroke outboard motor oil
Engine oil quantity:
0.5L (0.53
US qt)
OIL DIPSTICK
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 screwed 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.