Manual Scheppach MS173-51 SE (page 32 of 68) (English, German, French)

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32 | GB

• Pull out the dip stick (12) again and read off the

oil level while holding horizontally. The oil level

must be between the maximum and the minimum

Changing the oil Fig. 23

• Change the engine oil every year before the start of

the season when the engine is warm.

• Use only engine oil (SAE30).

• Empty the fuel tank (with a petrol suction pump)

• Place a at oil drip tray in front of the mower (min.

volume 1 Litre).

• Remove the dipstick and tip over the mower until

the whole oil is run out into the oil drip tray.

• Fill up with engine oil as far as the top mark on the

dipstick (approx. 0.47 l).

• Important! Do not screw in the oil dipstick to check

the oil level – only insert it as far as the thread.

Dispose of the used oil in accordance with applicable

regulations.

Cleaning the belts (Fig. 17, 19)

• Remove the knife and the gear housing by loosen-

ing the screws out.

• Clean the elements of the transmission and the belt

once or twice a year with brush or compressed air.

• Screw the transmission housing and the knife on

again.

Care and adjustment of the cables

Oil the cables at regular intervals and check that they

move easily.

Maintenance of the air lter (Fig. 20)

A soiled air lter will reduce the performance of the

engine because it will prevent enough air getting to

the carburetor. It is therefore imperative that regular

checks are made. The air lter should be checked

every 25 hours and cleaned if required. If the air is

very dusty the air lter should be checked more reg-

ularly.

Unclip the air lter cover and remove the sponge lter

element. To avoid objects falling into the air intake,

replace the air lter cover. (Fig. 20).

Important: Never clean the air lter with petrol or in-

ammable cleaning agents. Clean the air lter with

compressed air or simply by knocking out any soiling.

Maintenance of the spark plug (Fig. 21)

Check the spark plug for dirt and grime after 10 hours

of operation and if necessary clean it with a copper

wire brush. Thereafter service the spark plug after

every 50 hours of operation.

Pull off the spark plug boot with a twist. Remove the

spark plug (10) with a spark plug wrench.

Using a feeler gauge, set the gap to 0.75 mm( 0.030”).

Ret the spark plug taking care not to overtighten.

Engine brake lever (Fig. 1)

The engine is equipped with a mechanical brake (3)

which has to be checked regularly. When releasing

the brake lever, the blade must come to a halt within

m WARNING

Never work on or touch conducting parts on the ig-

nition unit with the engine running. Always pull the

spark plug boot from the spark plug before starting

any work of care or maintenance. Never perform any

work on the machine while it is running. Any work not

described in these Operating Instructions must be

performed by an authorized service workshop only.

Wheel axles and wheel hubs

• These should be lightly greased once a season.

Blade

For safety reasons you should only ever have your

blade sharpened, balanced and mounted by an au-

thorized service workshop. For optimum results it is

recommended that the blade should be inspected

once a year.

Changing the blade (Fig. 17)

Only ever use original spare parts when having the

blade replaced.

Wear gloves when replacing the blade in order to pre-

vent injury.

Never have any other blade tted.

• Empty the fuel tank before removing the blade

• To replace the blade, undo the screw.

• Reinstall as illustrated in Fig. 17. Tighten the screw

properly. Tightening torque 45 Nm. When replacing

the blade, the blade screw should also be replaced.

Damaged blades

Should the blade, in spite of all precautions, come

into contact with an obstruction, shut down the en-

gine immediately and pull the spark plug boot. Tip

the lawn mower onto its side and check the blade for

damage. Damaged or bent blades must be replaced.

Never attempt to bend a bent blade back to straight

again. Never mow the lawn with a bent or heavily

worn blade as this will cause vibrations and can lead

to further damage to the lawn mower.

m CAUTION! There is a risk of injury if you work with

a damaged blade.

Resharpening the blade

The blades can be resharpened with a metal le. In

order to avoid imbalance, the blade should be re-

sharpened by an authorized service workshop

Checking the oil level

m CAUTION! Never run the engine with no or too lit-

tle oil. This could cause severe damage to the engine.

Use only SAE30 engine oil.

Checking the oil level (Fig. 18):

• Stand the lawn mower on a at level surface.

• Unscrew the oil dip stick (12) by turning anticlock-

wise, pull out and wipe. Insert the dip stick back in

the lling mount as far as the stop, but do not screw

back in.

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Scheppach MS173-51 SE Manual

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