Maintenance Schedule - GMC GMHS30 Mode D'emploi

Maintenance Schedule

Description
Air filter
Spark plug
GB
Fuel lines
Trimmer Blade
Guide Bar
Saw Chain
Cleaning and adjustment
Carburettor
Cleaning the air filter
WARNING: Never run this tool without the air filter element fitted, as this will lead to rapid wear of internal
components, causing permanent engine damage and shortening the service life of this tool.
1. Remove the Air Filter Cover (40) from the Air Box (41) by squeezing the sides of the Air Filter Cover and
pulling it away from the Air Box
2. Remove the air filter element from the Air Filter Cover
WARNING: DO NOT use petrol or other flammable solvents to clean the filter element as this may lead to fire
or explosion.
3. Wash the air filter element thoroughly in a solution of warm water with non-foamy household detergent, or
clean with a specialised non-flammable solvent
WARNING: DO NOT wring out the element, as this could damage the sponge material.
WARNING: NEVER install a wet filter element, as water in the air intake will lead to permanent engine damage.
4. Immerse the dried filter element in clean engine oil, or alternatively, apply specialised air filter oil to the filter
element. Gently squeeze (but DO NOT wring out) to remove excess oil.
5. Reinstall the air filter element and the Air Filter Cover
Spark plug maintenance
Note: Before installing a new spark plug, ensure the gap is correctly set to 0.6 - 0.8mm. Not doing so could
cause the piston to conflict with the spark plug, damaging internal components.
1. Pull off the Ignition Lead (43) to reveal the spark plug
2. Remove the spark plug using the provided Spark Plug Combi Tool (35)
3. Clean or replace the spark plug
4. When installing the spark plug, turn the plug by hand until resistance is felt, then continue to turn using the
Spark Plug Combi Tool another 1/3 of a turn
Work to be carried out Before each use
Inspection (X)
Cleaning
Cleaning & adjusting
Inspection & cleaning
Cleaning (X)
Check for wear X
Deburr
Turn over/ replace
Clean/ check oiling port
Inspect/ check tension X
Sharpen
Replace
After 1 month/first 20
Every 3 months/50 hours
hours
(X)
X
X
Trimmer line replacement
1. Lock the Bump Feed Spool Head (28) into place by inserting the Small Hex Key (31) into the opening in the
Cutting Head Assembly (Image D) and remove the Bump Feed Spool Head by turning it clockwise
2. Push-in the two tabs located on either side of the Bump feed Spool Head (Image O); the head will separate
into two pieces
3. Remove the spool from the centre (Image P) and wrap the new trimmer line around in the direction
illustrated on the top of the spool
4. Feed the trimmer line through the eyelets on either side of the Bump Feed Spool Head (Image Q)
5. Replace the cover, ensuring the tabs 'click' back into place
6. Pull both ends of the trimmer line to tension the trimmer line inside the Bump Feed Spool Head
7. Refit the Bump Feed Spool Head as instructed in 'Line trimmer head assembly'
Adjusting chain tension
WARNING: ALWAYS wear cut-proof gloves when touching the saw chain.
1. Loosen (do not remove) the Guide Bar Securing Nut (1) using the supplied Spark Plug Combi Tool (35)
2. Use the Screwdriver (34) to adjust the Tensioning Screw (46):
• turn clockwise to increase chain tension
• turn anticlockwise to decrease chain tension
3. Tighten the Guide Bar Securing Nuts securely (12-15Nm)
4. Check chain tension as described in 'Checking the chain tension'. Start over from step 1, should
adjustments need to be made
Cleaning
• Keep the tool clean at all times. Dirt and dust will cause internal parts to wear quickly, and shorten the
machine's service life. Clean the body of your machine with a soft brush, or dry cloth. If available, use clean,
dry, compressed air to blow through the ventilation holes
• Clean the tool casing with a soft damp cloth using a mild detergent. Do not use alcohol, petrol or strong
cleaning agents
• Never use caustic agents to clean plastic parts
16
Every 12 months/300
Every 6 months/100 hours
hours
(X)
(X) (Authorised GMC service
centre only)
X
X
X
(X) (Authorised GMC service
centre only)