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User manual and warranty card
D - hole center distance (27,5 mm),
Hole diameter 11x11 mm circle for safety wedges is standard and amounts to 15.5 mm.
It is recommended to use MURRAY cutting knives dedicated to the given mower model.
Attention! The shape of the knife indicates its characteristics, depending on the shape of
the knife is more suitable for: mowing with a basket, mowing with side ejection or mulching. The
universal knife used in the factory may turn out to be less efficient than we would have expected,
so it is recommended to buy accessory knives for each function, i.e. one for grinding, the other for
throwing grass into the basket.
SPARK PLUG OPERATION
Spark plug (Fig. 16A) must be replaced at the beginning of each season or after 100 hours
of operation.
Use original B&S QC12YC / B&S 797429 spark plugs. Recommended gap between electrodes is: 0.51
mm (Fig. 16B). Check the gap with a blade feeler gauge.
OIL REPLACEMENT
The first oil change should be carried out after 4 to 5 hours of engine operation. Perform next oil
changes every 25 hours of operation or more often. The oil drain plug may be mounted on the
engine block, but this depends on the engine model. If the engine does not have a drain plug in the
engine block, pour oil with the filler plug after emptying the fuel tank:
• Unscrew the oil filler cap with the dipstick.
• Remove the air filter to prevent it from absorbing gasoline when the mower is tilted.
• Tilt the mower to the oil filler plug side 15 (Fig. 2).
• Leave the mower in this position until the oil stops flowing (this may take several minutes).
After pouring the oil out of the engine, set the mower in a flat position and pour about 0.47L of
engine oil recommended by B&S SAE30 specification by checking the level on the dipstick integrated
with the oil filler cap. Screw in the oil plug with the dipstick and install the air filter.
AIR FILTER REPLACEMENT
Every 25 hours of operation, check the condition of the air filter. The filter must be replaced every
100 hours or earlier if it is contaminated.
Press the catches securing the filter housing or unscrew the bolts securing the filter cover (Fig. 18A).
1. Open the cover 1 (Fig. 18B).
2. Remove the air filter 2 (Fig. 18B). Remove the pre-filter 3 (Fig. 18B), if equipped, from the filter.
3. If the filter is not damaged:
– - gently tap the filter on a hard surface to remove impurities,
– - wash the filter sponge element with water and detergent,
– - squeeze the foam element into a clean cloth,
– - do not soak the filter sponge element of the filter with engine oil.
4. If the filter is damaged replace the filter with a new one.
5. Install dry pre-filter, if equipped with filter, install filter.
6. Replace the cover by sliding the catches into the slots on the filter housing or tighten the screw.
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