LEHR 5.0 HP 4-STROKE - Manual (Page 23)

LEHR | ALL RIGHTS RESERVED 2012-2013 21
TROUBLESHOOTING
A problem in the fuel, compression, or ignition systems can cause poor starting, loss of power, or other
problems. This section describes basic checks and possible remedies.
ENGINE WILL NOT START OR OPERATE
Q: Is engine stop switch lanyard not attached?
A: Attach lanyard.
Q: Is throttle speed set incorrectly?
A: Set throttle speed to 1/4 or less, unless the water is cold, then set to 1/4 - 1/2 throttle. See pg 10.
Q: Is shift lever in gear?
A: Shift to neutral.
Q: Is propane tank empty, or fully connected?
A: Shake the tank to feel for liquid, then be sure it is fully connected.
Q: Is the spark plug fouled or incorrect type?
A: Inspect spark plugs. Clean or replace with recommended type.
Q: Is spark plug cap fitted incorrectly?
A: Check and re-fit caps.
Q: Is ignition wiring damaged or poorly connected?
A: Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.
Q: Possible faulty ignition parts?
A: Have serviced by LEHR dealer.
Q: Possible faulty internal engine parts?
A: Have serviced by a LEHR dealer.
ENGINE IDLES IRREGULARLY OR STALLS
Q: Is propane tank empty?
A: Check tank fluid level by shaking it.
Q: Is spark plug fouled or incorrect type or gap?
A: Inspect spark plug. Clean or replace with recommended type.
Q: Is the Idle speed set correctly?
A: Adjust Idle screw or have serviced by LEHR dealer.
Q: Are fuel joints connected correctly?
A: Check for any leaks or smell of propane. Tighten any loose fittings. Replace any faulty fuel lines or
connectors.
Q: Is thermostat faulty or clogged?
A: Have serviced by LEHR dealer.
Q: Is carburetor faulty?
A: Have serviced by LEHR dealer.
Q: Is engine oil level low?
A: Check oil level and add oil if needed.
ENGINE POWER LOSS
Q: Is fuel supply running low?
A: Shake propane bottle or tank to determine if propane level is low. If so, replace tank or operate at reduced
throttle settings until fuel supply is replenished.
Q: Is fuel system obstructed?
A: Check for pinched or kinked fuel line or other obstructions in fuel line.
Q: Is propeller damaged?
A: Have propeller repaired or replaced.
Q: Is propeller pitch or diameter incorrect?
A: Install correct propeller to operate outboard at its recommended speed.