Use and Care Manual

Tsurumi’s Operation, Service and Repair Manual
Troubleshooting
40
FAULT PROBABLE CAUSE REMEDY
Engine speed does
not increase when
load applied
(continued)
Wattage of connected
appliance or electric tool
exceeds rating.
(continued).
TPG4-3000HDX 3550 to 3650 RPM
TPG4-4500HDX 3550 to 3650 RPM
TPG4-6000HDX 3550 to 3650 RPM
TPG4-7000HDX 3550 to 3650 RPM
TPG4-7000HDXE 3550 to 3650 RPM
NOTE: The engine speeds are for a cold engine.
If the engine speed adjustment screw is out of its
adjustment range, move the solenoid backward.
3. Check the wiring through the coil on the idle
control unit.
SINGLE VOLTAGE TYPE: Make sure that an
output wire form the main coil is passing through
the coil on the idle control unit.
DUAL VOLTAGE TYPE: Check to make sure
that the two output wires from the main coils pass
through the coil on the idle control unit in the
same direction.
4. Check the idle control unit. Check resistance
between the five leads.
5. Observe the terminal identification diagram
below:
6. Refer to Table 5-1 for resistance values.
NOTE: The resistance readings in Table 5-1 will
vary depending upon the type of circuit tester
being used. Table 5-1 is an example of the
resistance readings measured by an ordinary
analog circuit tester with a 1.5-volt battery power
source. It is advisable to check the resistance
readings using your standard circuit tester and
adjust the values accordingly.
Engine speed does
not decrease when
load removed
Solenoid bracket
damaged or distorted.
Check bend angle of solenoid bracket. Correct as
required.
Wire leads damaged. Check to make sure two solenoid leads are
securely connected.
Check wiring to idle
control unit.
Check to make sure wire leads to idle control unit
are securely connected.
Solenoid failed. Check resistance between two solenoid leads
(refer to Table 5-1) for resistance limits. If
resistance is higher or lower than limits, replace
solenoid.