Mower Maintenance; Carburetor Adjustments; Oil Service; Air Cleaner Service - Hayter Harrier 41 Owner's Handbook Manual

MOWER MAINTENANCE

Carburettor Adjustments
These adjustments should only be made by an authorised Briggs
& Stratton dealer. Under no circumstances should the engine
be adjusted to run at a speed in excess of that shown on the
Declaration of Conformity.

Oil Service

WARNING: Fuel and its vapours are extremely fl ammable
and explosive.
Fire or explosion can cause severe burns or death.
Check the oil level daily before starting the engine and ensure
that the correct oil level is maintained. Refer to Assembling the
Mower Before First Use for oil checking and fi lling instructions.
Change the engine oil after the fi rst 5 hours of operation and
thereafter according to the Maintenance Schedule.
• Drain the fuel by running the engine until the fuel tank is
empty.
• Remove the spark plug lead.
• Allow the engine to cool.
• Drain the oil whilst the engine is warm (not hot).
• Remove the oil fi ller dipstick and drain the oil into a suitable
container.
Fig. 21 Fig. 22
3
1
1
4
2
Refi ll with new oil of the recommended SAE viscosity grade.
Refer to Assembling the Mower Before First Use.

Air Cleaner Service

WARNING: Never start and run the engine with the air
fi lter removed.
NOTE: Do not use pressurised air or solvents to clean the
fi lter. Pressurised air can damage the fi lter and solvents will
dissolve the fi lter.
To service the air cleaner, loosen screw (1) and remove cover
(2).
(Refer to fi g.21)
Remove cartridge (3) and clean by tapping gently on a fl at
surface. If very dirty, replace.
• Do not use petroleum solvents.
• Do not use pressurised air.
• Do not oil the cartridge.
After servicing, install the cartridge into the cover. Insert the
tabs on the bottom of the cover into the slots in the bottom of the
base (4). Tilt the cover upwards and securely tighten the screw
to the base.
Fig. 23
B
A
B

Spark Plug Service

Improper maintenance, use of nonconforming replacement
components, or the modifi cation of the spark plug may cause
death or serious injury.
Use only Briggs & Stratton (Part number 19368) spark tester (1)
to check for a spark as shown in the diagram.
(Refer to fi g.22)
Replace the spark plug every 100 hours or every season,
whichever occurs fi rst. A spark plug wrench is available from
any authorised Briggs & Stratton service dealer.
Check the spark plug gap (A) with a wire feeler gauge (B). If
necessary, reset the gap to 0.50 mm. Install and tighten the spark
plug, torque to 180 lb-in (20 Nm) .
(Refer to fi g.23)
13