McCulloch B33B Petrol Brushcutter 33 cc

The regular habits that prevent breakdowns and extend your appliance’s life. Each tip shows how often to do it; those marked “For this model” are specific to your appliance, the rest apply to the whole family.

• Only use fresh fuel mix

  Two-stroke mix goes stale and separates within weeks: past a month it starts poorly, fouls the engine and makes it run hot. Mix small batches, keep to the ratio in the manual, and drain the tank before long storage.

• Clean the air filterMonthlyFor this model

  Cutting dust clogs the filter fast. A clogged filter means higher fuel use, lost power and hard starting. Pop the cover off without tools, tap it out or wash it in soapy water, and dry it fully before refitting.

• Clear the cooling finsAfter each use

  Grass and soil build up around the cylinder and stop air from cooling the engine — the number-one cause of overheating. After each session, blow or brush out the engine housing and the air intake grilles.

• Check and sharpen the bladeAfter each useFor this model

  A dull blade strains the engine and kicks back dangerously on woody stems; a cracked blade must be replaced, never reused. Before each use, check the edge, look for cracks, and make sure the blade nut is tight.

• Check the spark plug each seasonYearly

  At the start of the season, pull the plug: black, wet electrodes point to a rich mix or a dirty filter. Clean the deposits, set the gap per the manual, and replace it if the insulator is cracked.

• Prepare for winter storageYearly

  Before winter, run the engine until it uses up the fuel in the carburettor (stagnant two-stroke gums up the diaphragms). Clean the machine, grease the cutting head, and store it dry and away from frost.