Operating Instruction DSH 700X-900X

16 English 2271385
*2271385*
2. Pull the fuel filter out of the fuel tank.
3. Check the condition of the fuel filter.
▶ Replace the fuel filter if it is very dirty or clogged.
4. Slide back the clip on the hose and remove the dirty fuel filter.
5. Fit a new fuel filter and secure it with the clip on the hose.
6. Push the fuel filter back into the fuel tank.
7. Close the fuel tank.
7.5 Cleaning the spark plug, setting the spark plug gap or replacing the spark plug 13
CAUTION
Risk of injury. The spark plug and parts of the engine may be hot immediately after the product has been in
use.
▶ Allow the product to cool down before undertaking maintenance or cleaning.
1. Use a gentle twisting motion to pull the cable connector off the spark plug.
2. Use the spark plug wrench to unscrew and remove the spark plug from the cylinder.
3. If necessary, clean the spark plug electrode with a soft wire brush.
4. Check the spark plug gap and, if necessary, adjust it to the correct gap of 0,7 mm with a feeler gauge.
5. Fit the ignition cable connector to the spark plug and hold the threaded section of the spark plug against
the cylinder.
6. Move the start/stop switch to the “start” position.
WARNING
Risk of injury. Touching the electrodes presents a risk of electric shock.
▶ Don’t touch the spark plug electrodes.
7. Pull the starter cord (press the decompression valve first).
▶ An ignition spark must now be clearly visible.
8. Use the spark plug wrench to screw the spark plug into the cylinder (tightening torque: 12 Nm).
9. Fit the ignition cable connector to the spark plug.
7.6 Adjusting the carburetor 14
The carburetor of this product has been factory set for optimum performance and sealed to prevent tampering
(jets H and L). The idling speed of the machine (jet T) may be adjusted by the user. All other adjustments
must be carried out by Hilti Service.
Tampering with the carburetor settings may cause damage to the engine.
▶ Clean the air filter. → page 15
▶ Allow the product to run until it reaches its normal operating temperature.
▶ Use a suitable flat screwdriver (tip width 4 mm/ ⁵/₃₂ ") and do not force the adjusting screw beyond its
intended adjustment range.
▶ Adjust the idling speed jet (T) so that the engine runs smoothly when idling but the cutting disc does not
begin to rotate.
7.7 Care and maintenance of the machine
To help ensure safe and reliable operation, use only genuine Hilti spare parts and consumables. Spare
parts, consumables and accessories approved by Hilti for your product can be found at your local
Hilti Center or online at: www.hilti.group
▶ Keep the product, especially its grip surfaces, clean and free from oil and grease.
▶ Do not use cleaning agents containing silicone.
▶ Clean the outer surfaces of the machine at regular intervals with a slightly damp cloth or a dry brush. Do
not use a spray, steam pressure cleaning equipment or running water for cleaning.
▶ Do not allow foreign objects to enter the interior of the product.