Use and Care Manual

Tsurumi’s Operation, Service and Repair Manual
Troubleshooting
39
FAULT PROBABLE CAUSE REMEDY
AC voltage is
normal at no-load,
but load cannot be
applied (continued).
Engine speed too low
(continued).
4. Check engine speed.
5. Operate the generator at no load.
6. If the speed is too low, adjust to the normal
engine speed specified in Table 5-1.
7. Restart the generator and apply load. If load
still can not be applied, check stator, rotor,
and condensers (refer to “No AC Output”
troubleshooting steps above).
Faulty power-consuming
device.
Check for faulty appliance, power tool, or other
power-consuming devices.
Engine overheated. Check for and clear away debris covering engine
and generator cooling air inlets and outlets.
Failed generator
insulation.
1. Check Insulation.
2. Stop engine. Measure the insulation
resistance between the “live” terminal of a
receptacle and the ground post on the front
panel.
3. If the insulation resistance is less than 1MΩ,
disassemble the generator to obtain the
stator and rotor.
4. Disassemble to gain access to the
components in the control box.
5. Check the insulation resistance of the stator,
the rotor, and the “live” electrical components
in the control box. (Any component whose
insulation resistance is less than 1MΩ is
faulty and may cause electrical leakage.)
6. Replace any component having insulation
resistance of less than 1MΩ.
Engine speed does
not increase when
load applied
Solenoid damaged.
Check bend angle of solenoid bracket. Correct as
required.
Wattage of connected
appliance or electric tool
exceeds rating.
1. Check rating of connected appliance or
electric tool exceeds rating. Use appliance or
tool having compatible rating.
2. Check the slow set RPM. Normal idling
speeds are as follows: