Hitachi H90SB manual Operation, HOW to Replace Grease, Power switch, Extension cord

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2.Power switch

Ensure that the power switch is in the OFF position. If the plug is connected to a power receptacle while the power switch is in the ON position, this Demolition hammer will start operating immediately, inviting serious accident.

3.Extension cord

When the work area is remote from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.

4.Mounting an accessory, such as a bull point, a cutter, etc..

(1)With the retainer directed backward, insert the accessory shank portion into the hole on the front cover. (Fig. 2)

(2)Swing the retainer back into place so that it engages the accessory shank portion

and prevents accessories from coming out of front cover. (Fig. 3)

NOTE:

Use a manual hammer to open/close the retainer as it is too heavy to move by hand.

Fig. 2

Fig. 3

NOTE:

When removing the accessory, such as a bull point, a cutter etc., follow the above procedure in reverse order.

OPERATION

1.Pull the trigger switch after applying the tip of the bit to the crushing position.

In some cases, it is necessary to punch the tip of the bit against the crushing position forcibly in order to begin the striking stroke.

This is not due to malfunction of the power tool. It means that the safe guard mechanism against no-load striking is working.

2.Operate this Demolition Hammer by utilizing its own weight. The performance will not be better even if it is pressed or thrust forcibly against the work surface.

Hold this Demolition Hammer with a force just sufficient to counteract the reaction.

CAUTION:

Sometimes the power tool does not begin the striking stroke even when the motor rotates because oil has become thick.

If the power tool is used at low temperatures or if it is used after a long idle time, this Demolition Hammer should be kept running for about five minutes in order to warm it up.

HOW TO REPLACE GREASE

This Demolition Hammer is full air-tight construction to protect against dust and to prevent lubricant leakage. Therefore, this Demolition Hammer can be used without lubrication for long periods. Replace the grease as described below.

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Contents Demolition Hammer Model H 90SB General Operatonal Precautions Service and Repairs Double Insulation System Enhances Safe OperationReplacement Parts Particular Precautions on Using Demolition HammerName of Parts Application SpecificationsStandard Accessories Prior to OperationMounting an accessory, such as a bull point, a cutter, etc HOW to Replace GreasePower switch OperationMaintenance and Inspection Page Part Name Roll Pin D6 ⋅ Lever Pin Bolt ⋅ 4 ⋅ Page 209