Husqvarna W25P Operator's Manual page 11

• The correct electrode gap is 0.6 to 0.7mm.
• When replacing plugs, please use designated
items.
• If too much fuel is absorbed or poor quality oil is
used, the spark plug electrodes become dirty,
making the engine harder to start.
• Note that using any spark plug other than those
designated may result in the engine failing to
operate properly or in the engine becoming
overheated and damaged.
• To install the spark plug, first turn the plug until it
is finger tight, then tighten it a quarter turn more
with a socket wrench.
TIGHTENING TORQUE: 14.7 to 21.6 N.m.
To check the fuel filter
WARNING: Inspect periodically, the muffler
for loose fasteners, any damage or corrosion.
If any sign of exhaust leakage is found, stop
using the machine and have it repaired
immediately. Failing to do so may result in
the engine catching on fire.
• Perform the procedures follows after every 100
hours of operation
1. Remove the muffler, insert a screwdriver into the
vent, and wipe away any carbon buildup. Wipe
away any carbon buildup on the muffler exhaust
vent and cylinder exhaust port at the same time.
2. Tighten all screws, bolts, and fittings.
3. Check and wipe off if any oil or grease left in
between the clutch lining and drum with oil-free
and lead-free gasoline.
To check the cooling system
WARNING: Never touch the cylinder, muffler,
or spark plug with your bare hands
immediately after stopping the engine. The
engine can become very hot when in
operation, and doing so could result in
severe burns.
(150 to 220 kgf-cm)
• When checking the product, check the area
around the muffler and remove any staffs that
attached, in case the muffler is overheated or
even the engine catch on fire.
• Check the intake air cooling vent and the area
around the cylinder cooling fins for blockage
every 25 hours of use, in case of engine overheat
or even product failure.
• Note that it is necessary to remove the upper
cover and the lower cover in order to be able to
view the upper part of the cylinder.
To adjust engine speed
• Although the engine is adjusted before leaving
the factory, it may require readjustment or
maintenance after repeated use. Please consult
the original supplier regarding inspections and
maintenance other than those shown below.
To adjust idle speed
Note: Warm up the engine before adjusting the idle
speed.
• If the engine stops or the pump continues to work
at idle speed with the throttle trigger at the turtle
position, readjust the engine speed with the idle
speed adjustment screw on the left of the
carburetor.
Turn the idle adjustment screw:
• Counter-clockwise to reduce engine speed
• Clockwise to increase engine speed
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