Ignition System; Starting System - TOHATSU NB-1000 Service Manual

Ignition System

SYMPTOM
CHECKS
Faulty stop circuit - see Test 2 -
stop Circuit Test, this section
Faulty ignition system -
see Ignition System Performance
Testing, this section
Faulty spark plug(s) -
See Section 2
lncorrect ignition timing or
carburetor synchronization -
See Section 2

Starting System

SYMPTOM
CHECKS
Blown fuse
Faulty main key switch
Not in Neutral,
defective Neutral switch
Faulty battery, starter solenoid/
starter motor cable
Faulty starter solenoid
Faulty starter motor:
- Faulty brushes
- Damaged pinion assembly
1-/ 2-Cylinder
Wilt not start
Cranks but
and pops or
will not start
backfi res
•
•
•
Will not crank
•
•
•
•
•
•
ELECTRICAL SYSTEM
Starts but
Low or high
stops
speed miss
immediately top end RPM
•
• •
• •
Poor accel- Engine will
eration, low not shut
off
•
• •
•
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7-11