Trouble Shooting - The Handy THMC-A Operator's Manual

TROUBLE SHOOTING

PROBLEM
Power loss or sudden
stopping.
Engine runs but blade will
not turn.
Unit is smoking.
Line will not advance when
restarting engine.
Trimmer head is hard to turn. Build up of grass or grass
Grass wraps round
attachment shaft and head
assembly.
It is hard to cut branches or
blade smoking.
Pruner chain does not turn.
Idle is lumpy.
POSSIBLE CAUSE
1. Fuel Tank is empty.
2. Mixture not reaching
carburettor.
3. Water in the mixture.
4. The air filter is dirty.
5. Carbon deposits in
cylinder, exhaust pipe
or muffler.
Possible clutch failure.
Incorrect fuel/oil ratio.
1. Line is welded to itself.
2. Not enough line on
spool.
3. Line has worn too
short.
4. Line is tangled on
spool.
wrapped around the head.
Cutting tall grass at ground
level.
1. No lubrication on the
blade.
2. Blade is blunt.
Chain too tight.
Idler screw not positioned
correctly.
Page 17
SOLUTION
1. Add fuel.
2. Drain and rinse out fuel
system.
3. Clean fuel filter.
4. Clean air filter.
5. Clean all affected parts
or change muffler.
Take to authorised repair
agent, your service dealer or
call customer services on
01793 333212.
Use 25 parts fuel to 1 part
mineral oil. For synthetic oils
use the manufacturer's ratio.
1. Lubricate with silicone
spray.
2. Add more line.
3. Pull lines alternately
pressing down on and
releasing bump button.
4. Remove line from spool
and rewind.
Clean affected parts.
Cut tall grass from the top
down.
1. Lubricate after each
use with oil or spray
lubricant.
2. Take to authorised
repair agent or your
service dealer to
change the blade.
Check the tension of chain
and adjust accordingly (see
page 14).
Adjust idler screw on the
carburettor. Tighten screw,
then loosen it 1 and 1/4 turns
for optimum performance.