Maintenance, Lehr – LEHR 9.9 HP 4-STROKE User Manual

Page 20

LEHR

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 US

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.