Engine Model:
Briggs & Stratton
Classic,
450 and 500 Series
Page
6 of 32 B&S Classic, 450 and 500 Series Selfhelp
Guide 2011, Issue 1.0
2 Fuel, Oil, Air Filter and Spark Plug Requirements
FUEL
– these are 4-stroke petrol engines. The correct fuel is ordinary unleaded
petrol.
Do not overfill the fuel tank. Fill the fuel tank to approximately 1” below the
top of the fuel filler neck to allow for fuel expansion.
OIL
– the correct oil to use is Mountfield MX855 oil, or a 4-stroke SAE 30 or
10W-30 multi-viscosity oil. DO NOT mix oil with the fuel. The dipstick shows
the minimum and maximum levels. The Briggs & Stratton 450 Series engine
holds 0.5 litre of oil, the other engines hold 0.6 litre of oil. NB Wipe the
dipstick, then fully replace it by screwing it in, now withdraw it to gain an
accurate reading.
The use of multi-viscosity oils in hot temperatures will result in a higher than
normal oil consumption. It is important, therefore, to check the oil level more
frequently.
Do not mix oils of different brands and features.
Do not over-fill with oil. Over-filling may cause smoking or contamination of
the spark plug and/or air filter.
Please dispose of old fuel and used engine oil in a manner that is compatible
with the environment
AIR FILTER
– these engines use a cleanable (warm soapy water) sponge air filter.
SPARK PLUG
– the following sparkplugs are the correct specification:
Champion: LM19 or QJ19LM
The spark plug gap should be 0.76mm or 0.03” (
30
/
1000
)
