2. Check
the continuity across the C terminal (1) and
the B terminal (2) with a circuit tester
.
NOTE
• If it is
not continuous or it shows a value,
replace the magnetic switch.
Resistance be-
tween the C termi-
nal (1) and the B
terminal (2)
Service specifi-
cation
Continuity
(1) C terminal
(2) B terminal
[A] Electromagnetic drive type
[B]
Gear reduction type
4.21 Checking alternator on unit
CAUTION
• To prevent
an accidental short circuit, attach
the positive cable to the positive terminal before
the negative cable is attached to the negative
terminal.
• Do not remove the battery cap while the engine
operates.
• Keep electrolyte away from eyes, hands and
clothes.
If you are spattered with it, clean with water
immediately.
• Keep
open sparks and flames away from the
battery at all times.
Hydrogen
gas
mixed with oxygen becomes very
explosive.
NOTE
• Before check alternator
on unit, do a check of
the below list.
– Battery terminal connections
– Circuit connection
– Fan belt tension
– Charge indicator lamp
– Fuses on the circuit
– Abnormal noise from the alternator
– Prepare full charged battery for the test.
• Do not touch the engine parts that turns while
the engine operates.
• Keep a safety distance from the engine parts
that turn.
Tools required
• Circuit tester
1. Start the engine.
2. Measure the voltage between battery terminals.
NOTE
• If the results of alternator-on unit test are
not in the service specifications,
disassemble the alternator and check each
component part to find out the problem.
• Refer to the alternator section about
Disassembling, Assembling and Servicing.
Regulating voltage
at no load
Service specifi-
cation
Approx. 13.0 to 15.0 V
(at 25 ℃ (77 ℉))
4.22 Checking voltage of glow lead
terminal
Tools required
• Circuit tester
1. T
urn the key switch to the “GLOW” (or “PREHEAT”)
position.
SERVICING
4. Checking and adjusting 4. ENGINE
05-E4B SERIES,05-E4BG SERIES
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