Servicing Instructions, Replacement of Engine OIL

–Align the protrusion on the underside of the cover with the slots of the eyelets.

Then push cover firmly onto the housing to secure it.

Cover

Protrusion

Slot of eyelet

SERVICING INSTRUCTIONS

CAUTION : Before doing any work on the Brush cutter/Grass trimmer, always stop the engine and pull the plug cap off the spark plug (see “checking the spark plug”).

Always wear protective gloves!

To ensure a long service life and to avoid any damage to the equipment, the following servicing operations should be performed at regular intervals.

Daily checkup and maintenance

–Before operation, check the machine for loose screws or missing parts. Pay particular attention to the tightness of the cutter blade or nylon cutting head.

–Before operation, always check for clogging of the cooling air passage and the cylinder fins. Clean them if necessary.

–Perform the following work daily after use:

•Clean the Brush cutter/Grass trimmer externally and inspect for damage.

•Clean the air filter. When working under extremely dusty conditions, clean the filter the severall times a day.

•Check the blade or the nylon cutting head for damage and make sure it is firmly mounted.

•Check that there is sufficient difference between idling and engagement speed to ensure that the cutting tool is at a standstill while the engine is idling (if necessary reduce idling speed).

If under idling conditions the tool should still continue to run, consult your nearest Authorized Service Agent.

–Check the functioning of the I-O switch, the lock-off lever, the control lever, and the look button.

REPLACEMENT OF ENGINE OIL

Deteriorated engine oil will shorten the life of the sliding and rotating parts to a great extent. Be sure to check the period and quantity of replacement.

ATTENTION : In general, the engine main unit and engine oil still remain hot just after the engine is stopped. In replacement of oil, confirm that the engine main unit and engine oil are sufficiently cooled down. Otherwise, there may remain a risk of scald.

Note: If the oil filled above the limit, it may be contaminated or may catch fire with white smoke.

Interval of replacement : Initially, every 20 operating hours, and subsequently every 50 operating hours

Recommended oil : SAE10W-30 oil of API Classification SF Class or higher (4-stroke engine oil for automobile)

In replacement, perform the following procedure.
1)	Confirm that the tank cap is tightened securely.	Fuel tank cap
2)	Detach the oil gauge.
	Keep the oil gauge free from dust or dirt.

Oil gauge

EM4250, EM4251, EM4250CA, EM4251CA specifications

The Makita EM4251CA and EM4250CA models are the latest additions to Makita's robust range of outdoor power equipment, specifically designed for professional landscapers and gardening enthusiasts. These brushcutters are known for their powerful performance, ease of use, and advanced technologies that enhance efficiency and durability.

The Makita EM4251CA features a displacement of 25.4cc, while the EM4250CA is slightly larger, with a 30.5cc engine. Both models are equipped with a high-performance 2-stroke engine that delivers impressive power and torque for tackling thick grass, weeds, and underbrush. The engines are designed for low emissions and fuel consumption, contributing to environmentally friendly operation while maintaining compliance with the latest regulatory standards.

One of the standout features of these brushcutters is the Easy Start System, which significantly reduces the effort required to start the engine. This system incorporates a spring-assisted starter that provides a smooth and reliable start every time. Additionally, the models offer a semi-automatic choke system that adjusts fuel flow for optimal performance in varying conditions.

For user comfort, the EM4251CA and EM4250CA are designed ergonomically, with a lightweight construction that enhances maneuverability without compromising strength. The adjustable bike handle provides solid control during operation, minimizing user fatigue during lengthy tasks. Both models also feature anti-vibration technology that reduces vibrations transmitted to the user, ensuring a more comfortable experience.

A robust and durable design is another hallmark of Makita's brushcutters. The fuel tank is constructed from high-quality materials to resist impacts and environmental factors, while the shaft is reinforced to withstand rigorous use. The inclusion of a reinforced cutter head allows for versatile cutting options, accommodating both trimmer line and metal blades for various applications.

For added convenience, these models are equipped with a soft grip handle that provides comfort during extended use, alongside a quick-release harness that allows for swift transitions between tasks. Overall, the Makita EM4251CA and EM4250CA brushcutters represent a blend of power, efficiency, and user-oriented design, making them ideal tools for anyone serious about maintaining their outdoor spaces.

With their mix of advanced technology and practical features, the EM4251 and EM4250 models ensure that users can tackle tough landscaping jobs with confidence and ease, making them invaluable assets for both professionals and hobbyists alike.