Fuel Mixture Preparation - Cembre NR-11P Operation And Maintenance Manual

ENGLISH
– Make sure the rotation direction selector (12) is in position "N" (idle position).
– Start the engine by following the procedure in § 5.
– Make sure the torque selector (13) is adjusted to the torque setting required (see § 3.3).
– Lift the wrench and move it to the work location.
– Position the socket over the head of the screw, bolt or nut, so it is completely inserted into the
socket (Ref. to Figs. 8 and 9).
– With the engine at minimum revs, set the rotation direction of the wrench (see § 3.4).
– Keeping a tight grip the wrench increase the speed of the motor to the number of revs required
by using the accelerator (02): in this way the impact striker will come into action with consequent
tightening/loosening of the fastening device.
– On fi nishing the operation, release the accelerator.
The impact wrench can be used independently or in conjuntion with the Cembre support trolley
(Ref. to Figs. 10, 11) and appropriate interface device (see § 8).
– The impact wrench can be used in vertical position with support trolley by fi tting interface device
type KCS-NR .
– The impact wrench can be used in horizontal position with support trolley by fi tting interface
device type KHOR-NR.
Risk of explosion or fi re, petrol is extremely fl ammable, handle with caution.
Risk of intoxication, avoid inhalation of petrol vapours.
Risk of irritation, avoid prolonged and repeated contact with skin.
The impact wrench motor is two stroke and functions on an oil-petrol mixture.
To ensure the correct amount of oil is used in the mixture, use the calibrated measure provided
(see fi gure).
To get the best performance from the motor we suggest using synthetic oil for 2 stroke motors
in the ratio of 1:50 (2 %).
As an alternative use mineral oil for 2 stroke motors in the
ratio of 1:25 (4 %).
Always use good quality oil.
We recommend a minimum 90 octane petrol.
Mix petrol and oil together well and prepare only enough for immediate use as the
mixture will age and if several weeks old may cause engine damage.
Always use the correct fuel mixture to avoid:
1 - Motor smoking and dirtying of the spark plug should the mixture be too rich with oil.
2 - Excessive overheating with consequent seizing of the motor should the mixture
be lacking in oil.

4. FUEL MIXTURE PREPARATION

2%
(synthetic oil for
2 stroke motors)
4%
(mineral oil for
2 stroke motors
4% 2%
8