OPERATOR’S MANUAL
PROPANE POWERED
OUTBOARD MARINE ENGINE
CAUTION: BEFORE OPERATING THIS PRODUCT, |
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READ AND FOLLOW ALL SAFETY RULES AND |
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OPERATING INSTRUCTIONS. |
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TABLE OF CONTENTS |
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Important Manual Information.................................................... |
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General Information......................................................................... |
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Installation............................................................................................ |
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Operation.............................................................................................. |
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Maintenance...................................................................................... |
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Troubleshooting............................................................................... |
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Warranty.............................................................................................. |
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15 HP
MODELS:
LP15 S
LP15 L
LP15 ES LP15 EL LP15 ES IB LP15 EL IB LP15 ERS LP15 ERL
FOR SERVICE
Call 1-866-941-LEHR (5347)
WARNING:
THIS PRODUCT CONTAINS CHEMICALS
KNOWN TO THE STATE OF CALIFORNIA
TO CAUSE CANCER, BIRTH DEFECTS OR
OTHER REPRODUCTIVE HARM.
LEHRLEHR| ALL|RIGHTSALL RIGHTSRESERVEDRESERVED2010-2011
UNDERSTANDING PROPANE
SAFETY WARNINGS FOR PROPANE UNITS
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.
Leakage of liquid propane can cause serious frostbite damage to skin. If you see liquid propane leaking, do not attempt to touch the area. Turn o the valve on the tank and let the leak dissipate.
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° 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.
3.Hand tighten only. Never use tools to tighten.
Overtightening can damage seals.
4.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.
5.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.
WARNING:
PROPANE IS HIGHLY FLAMMABLE, AND ITS VAPORS CAN EXPLODE IF IGNITED.
IMPORTANT MANUAL INFORMATION
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 and understand all manuals supplied with your boat.
•Read and understand 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 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.
LEHR | ALL RIGHTS RESERVED |
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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. 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.
•Leaking propane can be dangerously cold. It can freeze skin if handled. Never attempt to tighten a loose fitting while it is leaking. Turn the valve off on the cylinder and allow leak to dissipate before handling.
•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.
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LEHR | ALL RIGHTS RESERVED |
GENERAL INFORMATION
BASIC COMPONENTS
NOTE: All components may not be exactly as shown, also may not be included as standard equipment on all models.
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5 
10
1. |
TOP COWLING |
11. |
COOLANT WATER PILOT HOLE |
2. |
SWIVEL BRACKET |
12. |
TILT LOCK LEVER |
3. |
CLAMP BRACKET |
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PULL START HANDLE |
4. |
TRIM ROD |
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GEAR SHIFT LEVER |
5. |
COOLANT WATER INTAKE |
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TILLER HANDLE |
6. |
TOP COWLING LOCK LEVER |
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ENGINE STOP BUTTON |
7. |
LOWER COWLING |
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LOW OIL PRESSURE WARNING LIGHT |
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OIL OUTLET |
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PROPANE CONNECTOR |
9. |
LOWER UNIT HOUSING |
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ENGINE RESTRAINT CABLE MOUNT |
10. PROPELLER |
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TRANSOM CLAMP HANDLE |
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LP15S14A1234
SERIAL NUMBER |
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MODEL |
YEAR |
MONTH |
SEQUENCE PER MONTH |
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EX: 14 = 2014 |
EX: A = JANUARY |
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B = FEBRUARY |
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C = MARCH |
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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.
INTERNAL |
WARNING LABELS: |
BATTERY |
-DETACH FUEL LINE
FROM MOTOR EMISSIONS LABEL OR
CLOSE VALVE ON TANK WHEN NOT IN
USE
-USE ONLY PROPANE MOTOR FUEL
-FIRE HAZARD
LEHR | ALL RIGHTS RESERVED |
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GENERAL INFORMATION
PROPANE TANK
Use of a LEHR Liquid Draw propane tank or liquid draw forklift type tank is recommended. A DOT approved vapor “BBQ” propane tank may be used, however extended use at high RPM will result in slowed engine performance. Connect a vapor type tank to the remote propane connector with the provided high pressure vapor draw propane hose.
NOTE: Do not use a hose assembly that includes a pressure regulator.
WARNING: If using a liquid draw tank and liquid draw hose, always turn off the valve on tank when done using. When disconnecting the tank, the hose will still contain liquid propane. If the liquid draw hose needs to be removed, turn off the tank valve and run the engine to deplete the contents of the hose before removing the hose from the tank.
LEHR LIQUID DRAW |
STANDARD 20 lb. |
“LIQUID DRAW” |
“VAPOR DRAW” |
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PROPANE TANK |
PROPANE TANK |
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HIGH PRESSURE PROPANE HOSE |
HIGH PRESSURE PROPANE HOSE |
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TILLER HANDLE
To change direction wile operating your boat, move the tiller handle to the left or right as necessary.
TILLER HANDLE
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.
(R)(N) (F)
GEAR SHIFT LEVER
THROTTLE GRIP AND THROTTLE FRICTION ADJUSTER
The throttle grip is on the tiller handle. Turn the grip counterclockwise to increase speed and clockwise to decrease speed. 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.
WARNING: Do not overtighten the throttle friction adjuster. |
THROTTLE GRIP |
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If there is too much resistance, it could be |
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difficult to move throttle lever or grip, which |
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could result in an accident. When constant |
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speed is desired, tighten the adjuster just |
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enough to maintain the desired throttle setting. |
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THROTTLE FRICTION |
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ADJUSTER |
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LEHR | ALL RIGHTS RESERVED |
GENERAL INFORMATION
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 stop switch lock will pull out the stop switch, stopping ignition to the engine. This will prevent the boat from running away under power.
NOTE: The engine cannot be started with the stop switch lock removed.
ENGINE STOP
SWITCH
STOP SWITCH
LOCK
ENGINE STOP
SWITCH LANYARD 
HOOK
CORRECT |
INCORRECT |
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.
ENGINE STOP BUTTON
To stop the engine, push and hold the engine stop switch button or pull the lanyard out from the switch.
ENGINE STOP
BUTTON
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
HANDLE
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.
STEERING FRICTION ADJUSTER BOLT
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.
LEHR | ALL RIGHTS RESERVED |
5 |
GENERAL INFORMATION
TRIM ROD
The position of the trim rod determines the angle of the outboard motor in relation to the transom .
TRIM ROD |
TRANSOM CLAMP |
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TRIM ROD
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. The tilt lock mechanism will engage and lock the engine in three possible positions. To lower the engine, turn the lock lever back to the lock position. Then lift the engine slightly to allow lock mechanism to disengage, then carefully lower the engine all the way down.
TILT UP AND LOCK
UNLOCK
TILT LOCK LEVER |
LOCK |
TILT LOCK LEVER
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 lock lever downward.
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RUBBER SEAL |
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TOP COVER |
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LOCK |
FRONT HOOK |
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LEVER |
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LOWER COWLING |
LOWER COWLING |
LOCK |
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LEVER |
CARRYING HANDLES
Carrying handles are provided on the front and rear of the outboard motor. The handles enable you to carry the outboard motor with two hands.
REAR |
FRONT |
CARRYING |
CARRYING |
HANDLE |
HANDLE |
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LEHR | ALL RIGHTS RESERVED |
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.
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BOTTOM OF HULL |
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0-1 in (0-25mm) |
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ANTI-CAVITATION PLATE
CENTER LINE
(KEEL LINE)
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.
ATTACH ONE END OF THE RESTRAINT
CABLE THROUGH THIS CLAMP MOUNT
AND ONE END SECURELY ON THE BOAT
LEHR | ALL RIGHTS RESERVED |
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