Makita EH 620, EH 450 Checking and adjusting the idling speed, Supply of grease and lubricant

Checking and adjusting the idling speed

The cutting blade should not when the control lever is fully released. - Idle speed should be set to 2,600 rpm.

If necessary, correct it by means of the idle screw (the cutting blade must not run when the engine is on idle).

Clockwise : for faster rate of revolution

Counter-clockwise :for slower rate of revolution Check that there is sufficient difference between idling and clutch engagement speed to ensure that the cutting tool is at a standstill while the engine is idling. (If necessary, reduce idling speed.) If the tool still continues to run under the idling conditions, consult your nearest authorized service agent.

The clutch should engage at minimum 3,250 rpm.

Check the functioning of the STOP switch, the lock-off lever, the control lever, and the lock button.

Cleaning of air cleaner - Every 8 hours (Daily) - Remove the air cleaner cover.

- Push the choke lever up (arrow), to prevent dirt particles from entering the carburetor.

- Take out the sponge element, wash it in lukewarm water and dry it completely.

- After cleaning, put back the sponge element and the air cleaner cover.

NOTE If there is excessive dust or dirt adhering to the air cleaner,
clean it every day.	A clogged air cleaner may	make it
difficult or impossible to start the engine or increase the
engine rotation speed which could cause damage.		.

Checking the spark plug - Every 8 hours (Daily)

- Only use the supplied universal wrench to remove or to install the

spark plug.

- The gap between the two electrodes of the spark plug should be 0.6 to 0.7mm. If the gap is too wide or too narrow, adjust it. If the spark plug is clogged with carbon or fouled, clean it thoroughly or replace it. Use an exact replacement.

Supply of grease and lubricant

-Supply grease from the grease nipple every 15 operating hours. (Shell Alvania No.3 or equivalent)

The amount of grease for each supply is about 20cc.

(Once grease is supplied regularly as mentioned above, grease will come out from the end of the gear case (root of the cutting edge) in operation just after supply of grease. Confirm this phenomenon as a guide to grease supply.)

NOTE: Be sure to observe the specified time and amount of grease

supply.

If the grease supply is not made at the specified interval or if the amount of grease supplied is not sufficient, the machine may fall into a trouble because of lack of grease.

0,6 - 0,7 mm

An\

Grease will come out from here.

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