Stiga Complete Guide to Lawn Mower Oil Change for Maintenance and Performance

ENGLISH

If grass has dried on to the mower casing, it can be scraped clean. If necessary, touch up the underside with paint to prevent rust damage.

Clean the silencer and the surrounding area regularly to remove grass, dirt and flammable waste products.

Remove the transmission casing by removing the screws S (fig. 27) and clean around the transmis- sion (*) and drive belts (*) with a brush or com- pressed air once or twice a year.

Once every season, the drive wheels (*) should be cleaned internally. Remove both wheels. Clean the gear wheel and the wheel gear rim of grass and dirt using a brush or compressed air (fig. 18). Replace the wheel.

COOLING SYSTEM

Before each use, the engine’s cooling system must be cleaned. Clean the cylinder’s cooling flanges and air intake of grass remains, dirt, etc.

LUBRICATING DRIVE SHAFT (*)

Once per season, the wedge on the drive shaft should be greased. Remove the wheel (wheel cap, screw and washer). Then remove the circlip and washer so that the gear wheel can be removed from the shaft. Lubricate the wedge with universal grease.

Reinstall the wedge (the wedge is installed differ- ently on the right and left side, fig. 19-20). Install the gear wheel so that the L faces out on the left side and the R faces out on the right side (machine viewed from the rear).

OIL CHANGE

Replace the oil when the engine is warm and the fuel tank is empty. In order to prevent burns, take care while draining as the oil is hot.

Change the oil the first time after 5 hours of oper- ation, and subsequently every 50 hours of opera- tion or once a season. Remove the dipstick, tilt the mower and let the oil run out into a container. Be careful not to let any oil run on to the grass.

Fill with new oil: Use SAE 30 or SAE 10W-30 oil. The crankcase holds approx. 0.55 litre. Fill until the oil reaches the “FULL/MAX“ mark on the dip- stick.

AIR FILTER

A dirty and blocked air filter reduces the engine output and increases engine wear.

Briggs & Stratton LS 45 (fig. 21): Carefully re- move the air cleaner so that no dirt falls down into the carburettor. Remove the expanded plastic filter and wash it in liquid detergent and water. Dry the filter. Pour a little oil on the filter and squeeze it in. Reinstall the air cleaner.

Clean the filter every three months or after every 25 hours of use, whichever occurs first. More fre- quently if the engine is working on dusty ground.

Briggs & Stratton XTE (fig. 22):

Loosen the screw and close the cover of the air cleaner. Carefully remove the filter cartridge. Knock it against a flat surface. Replace the filter cartridge with a new one if it is still dirty.

Clean the filter every three months or after every 25 hours of use, whichever occurs first. More fre- quently if the engine is working on dusty ground.

Honda GCV (fig. 23): Remove the cover and take out the filter. Carefully check the filter for holes or other damage. A broken or damaged filter must be re- placed.

To remove dirt, carefully knock the filter several times against a hard surface or use compressed air from the back of the filter to blow-clean. Do not try to brush the filter clean as this forces dirt down into the fibres. A very dirty filter should be replaced.

Clean the air filter after every 25 hours of use or once a season. More frequently if the engine is working on dusty ground.

SPARK PLUG

Never remove the spark plug or spark plug cable when checking to see if there is a spark. Always use an approved test instrument.

Clean the spark plug regularly (every 100 hours of run time). Use a wire brush for cleaning.

Change the spark plug if the electrodes are exces- sively burnt or if the plug is damaged. The engine manufacturers recommendations are as follows:

Briggs & Stratton: Champion J19LM (RJ19LM), spark gap 0.76 mm.

Honda GCV: NGK BPR6ES,

Spark gap 0.7-0.8 mm.

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