Used engine oil may cause skin cancer if repeatedly left in contact with the skin for
prolonged periods.
Although this is unlikely unless you handle used oil on a daily basis, it is still advisable to thoroughly wash
your hands with soap and water as soon as possible after handling used oil.
6.4.
Recommended oil.
6.4.1.
Engine oil is a major factor affecting engine performance and service life. Non-detergent
and 2-stroke engine oils will damage the engine and are not recommended.
6.4.2.
The recommended oil is a 4-stroke petrol engine oil is SAE15W-40 or equivalent to SG grade.
The recommended operating temperature of this pump is between -
5⁰C and 40⁰C.
6.5.
Air filter service – see section 4.7.
Never run the engine without the air filter or use a damaged air filter. This will result in
damage to the engine.
6.5.1.
A dirty air filter will restrict air flow to the carburetor, reducing engine performance. If you
operate the water pump in particularly dusty areas, the air filter will need to be cleaned more
regularly than specified in the maintenance schedule.
6.6.
Spark plug service.
Using the wrong type of spark plug can result in engine damage.
6.6.1.
Recommended spark plugs: NGK BP6ES or equivalent
6.6.2.
Remove the spark plug cap (3) and remove any dirt from around the spark plug base.
6.6.3.
Use the plug wrench (1) to remove the spark plug.
6.6.4.
Measure the plug gap (5) with a feeler gauge. If the electrode or insulator is damaged,
replace the spark plug. Correct as necessary by carefully bending the side electrode. The gap
should be between 0.7mm and 0.8mm.
6.6.5.
Check if the spark plug (2) sealing washer (4) is in good condition. In order to avoid damage
to the thread in the cylinder head , screw the spark plug in carefully by hand.
6.6.6.
Once the spark plug has touched the washer, screw it down with a spark plug wrench and
compress the washer. If a new spark plug is used, tighten the plug another half turn to
compress the sealing washer. If replacing the used spark plug only tighten a 1/8 to a 1/4 turn
more. The spark plug needs to be fitted firmly but not over-tightened.
6.6.7.
Refit the spark plug cap.
Rev 6 - 10/11/2015
