TROUBLESHOOTING
POOR PERFORMANCE AT LOW AND IDLE SPEEDS
1. Check ignition timing
CORRECT
L
2.
Check carburetor air screw
for proper adjustment
CORRECT
�
3. Check if air is leaking past
intake pipe
NOT LEAKING
t
4.
Try spark test
GOOD SPARK
Probable Cause
INCORRECT
--------_,�( 1 )
Faulty COl unit
(2)
Faulty pulse generator
INCOR RECT---------•( 1 ) Fuel air mixture too rich
(Perform idle drop)
(2}
Fuel air mixture too lean
(Perform idle drop)
LEAKING----------•(1) Loose carburetor
(2)
Deteriorated inlet pipe gasket
(3) Deteriorated insulator O·ring
WEAK OR ------------+ (1) Faulty, carbon or wet fouled
INTERMITTENT SPARK
spark plug
(2)
Faulty COl unit
(3) Faulty pulse generator
(4)
Faulty ignition coil
(5) Broken or shorted high tension
wire
(6)
Faulty ignition switch
POOR PERFORMANCE AT HIGH SPEED
1. Check ignition timing
CORRECT
2.
Disco
*
nect fuel tube at fuel valve
FUEL F LOWS FREELY
t
3. Remove carburetor and check
for a clogged jet
NOT CLOGGED
Date of Issue: May, 1 983
© HONDA MOTOR CO., L TO.
INCORREGT--------____,• (1) Faulty COl unit
(2)
Faulty pulse generator
FUEL FLOW RESTRICTED ----•( 1 ) No fuel in fuel tank
(2) Clogged fuel tube or fuel filter
(3) Clogged fuel tank cap breather
hole
CLOGGED ---------•( 1 ) Clean
189
1 8-3
Summary of Contents for NHSO aeroBO 1983
Page 1: ...D SHOP MANUAL NHSOaeroBO...
Page 61: ...ALTERNATOR 7 0 66 HONDA NH80 Date of Issue May 1983 HONDA MOTOR CO LTO...
Page 90: ...FINAL REDUCTION 9 0 96 HONDA NHSO Date of Issue May 1983 HONDA MOTOR CO LTO...
Page 98: ...CRANKCASE CRANKSHAFT 1 0 0 104 HONDA NH80 Date of Issue May 1983 HONDA MOTOR CO LTD...
Page 106: ...FRAME COVERS 1 1 0 1 1 2 HONDA NH80 Date of Issue May 1983 HONDA MOTOR CO LTD...
Page 143: ...FUEL TANK OI L TANK 1 4 0 154 HONDA NH80 Date of Issue May 1983 HONDA MOTOR CO LTD...
