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4. MAINTENANCE
4.1
GENERAL MAINTENANCE SCHEDULE
WARNING! All maintenance work is carried out when the engine is stopped. If the engine must run, ensure that the working area is
well ventilated. Exhaust gases contain carbon monoxide; exposure to this toxic gas can cause loss of consciousness and can be fatal.
WARNING! If the engine has just been running, the exhaust will be very hot, take care not to touch it.
Ensure the spark plug HT lead has been disconnected prior to commencing maintenance.
The oil, air filter and spark plug must be changed regularly. All other maintenance must be carried out by qualified staff, contact your
local Sealey service agent.
Items
Remarks
Adjust gap
Spark Plug
Replace if necessary
Check oil level
Engine Oil
Replace
Clean
Air Filter
Replace if necessary
Check and adjust
Fuel Filter
when engine is cold
Clean
Valve Clearance
Replace if necessary
Check for damage
Fuel Line
Replace if necessary
Check gasket
Replace if necessary
Exhaust System
Check exhaust
Replace if necessary
Carburettor
Check choke
Check fan for
Cooling System
damage
Check starter
Starting System
operation
Increase frequency if
Decoking
necessary
Check for damage
Fittings/Fasteners
Replace if necessary
4.2
MAINTAINING THE AIR FILTER
Note: If the air filter is dirty, air passing towards the carburettor will be restricted. To avoid the carburettor malfunctioning,
clean the air filter regularly. Clean more often when the engine is used in extremely dusty places.
WARNING! Never use fuel or solvent to clean the foam element. This can cause a fire or an explosion.
4.2.1 Unscrew the securing screws and remove the air filter cover.
4.2.2 Carefully check the element for tears or holes and replace if damaged.
4.2.3 Clean the element using compressed air. Replace the element if it is very dirty.
Note: Never attempt to remove dirt with a brush as brushing could imbed the dirt into the fibres.
4.2.4 Wash the foam element in household detergent diluted in warm water, rinse with plenty of water and dry thoroughly.
4.2.5 Dip the foam element into some clean engine oil and press out to remove any excess oil.
Note: The engine will start smoking during the first start up if too much oil is left on the foam.
4.2.6 The refitting procedure is the reverse of the above.
4.3
CLEANING THE FUEL FILTER
4.3.1 Close the fuel valve .
4.3.2 Remove the fuel filter.
4.3.3 Wash the fuel filter with a non flammable high flash point solvent.
4.3.4 Dry thoroughly and refit ensuring the lid is fully tightened.
4.3.5 Open the fuel valve and check for leaks.
4.4
MAINTAINING THE SPARK PLUG
WARNING! If the engine has just been running, the exhaust and spark plug will be very hot. Allow to cool.
WARNING! The spark plug must be correctly tightened. If the plug is not well tightened, it can overheat and damage the engine.
Note: To ensure that the engine performs correctly, the spark plug must not have any deposits on it and its gap must be correct.
4.4.1 Remove the spark plug cap and the spark plug using the spark plug wrench supplied.
4.4.2 Inspect the spark plug and discard it if the electrodes are worn or if the porcelain is cracked or scaled. If the spark plug is to be
re-used, clean with a wire brush.
4.4.3 Measure the electrodes gap using a feeler gauge. The gap must be between 0.7mm and 0.8mm. Adjustment of the gap is
achieved by bending the side electrode.
4.4.4 Check the spark plug washer is in good condition and screw the plug in by hand to avoid cross threading the threads.
4.4.5 Once the spark plug is installed, tighten it using a spark plug wrench to compress the washer.
Note: In the case of a new spark plug being fitted, screw it in by hand and tighten it by 1/2 turn with a spark plug wrench to
compress the washer. If the spark plug has already been used, screw it in by hand and only tighten it by 1/8 to 1/4 turn to
compress the washer.
Daily
1st Month
(pre-operation)
(or 20Hrs)
Original Language Version
3 Months
6 Months
(or 50 Hrs)
(or 100 Hrs)
Note: Service more often if used in dusty environments.
12 Months
(or 300 Hrs)
G2300.V2 (S)Issue: 2 - 25/10/12
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