Husqvarna 2011 SMS 125, Workshop Manual

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ELECTRICAL SYSTEM
Ed. 05-2011
Checking coolant temperature sensor
Remove cap (1), disconnect electric contacts, and remove thermostat from
head.
Connect coolant temperature sensor (2) to an ohmmeter, and dip it inside
the oil contained inside a pan. Heat up oil to slowly increase its temperature,
and observe the values shown by the thermometer and ohmmeter. If coolant
temperature sensor resistance does not change as shown in the table, sensor
shall be replaced.
Temperature sensor specifications
Temperature
(°C)
Resistance
(kQ)
Current
(mA)
-43±0.2
-20±0.2
+40±0.2
+100±0.2
+150±0.2
below 86
17.90±15%
1.16±10%
0.156±5%
above 0.030
max. 0.1
max. 0.2
max. 0.5
max. 1.0
max. 2.0
Checking lubricating oil pump operation
- Remove saddle and right-hand side panel as outlined in the relevant
paragraph.
This check shall be carried out with the engine off.
Checking the supply system
Turn ignition key (1) to ON, disconnect connector (2) from oil pump (warning
light (3) will stay on). Using a tester, check that the voltage between chassis
ground and connector yellow/black wire is above 11 V.
Checking the pump
Using the special pliers, loosen clamp onto pump (5) to carburettor pipe (4), and
disconnect pipe. Position a container under carburettor and make sure that the
ignition key (1) is set to OFF:
- disconnect oil pump connector (2);
- turn ignition key (1) to ON, and reconnect connector (2).
A 5-minute pumping cycle will start with the warning light (3) flashing every 0.5
seconds. Check that oil comes out of tube spacer (4), then turn ignition key (1)
to OFF to stop pump operation.
If oil does not come out, check in the following sequence:
- that tube (4) and tube (6) are not kinked;
- that filter (7) is not clogged.
If tubes (4) and (6) are not kinked and filter is not clogged, replace pump and
reassemble all parts, in the reverse order compared to disassembly.
Lubricating oil pump does not require any overhaul intervention, and its parts
do not have to be removed or checked.