Poor Performance At Low And Idle Speeds - Honda ATC200S Workshop Manual

" Remove oil level gauge and check
oil level
CORRECT
t
11.
Remove cy linder head cover and
inspect lubrication
VALVE TRAIN LU8RICATED
PROPERLY
12.
I
Che<:k i f engine overheats
NOT OVERHEATED
J
".
Accelerate or ru n at high speed
ENGINE DOES NOT KNOCK
TROUBLESHOOTI NG
OIL LEVEL INCORRECT -----~. (II Oil level too high
mOil level too low
(3) Contaminated oil
VALVE TRAIN NOT - - - - - -• •
~ (I)
Clogged oil passage
LUBRICATED PROPERLY (2) Clogged oil con trol orifice
OVERHEATED - - - - - -- _
•
111
Excenive carbon build·up
in combustion chamber
)21
Use of improper quality
of fuel
131
Clutch slipping
141
Fuel -air mix ture too lean
ENGINE KNOC KS - -- - -_ _
111
Worn piston and cylinder
)21
Fuel -air mixture too lean
131
Ule of improper grade of
fuel
141
Excessive carbon build·up
in combustion chamber
)51
Ignition t iming too advanced
(Fa ulty COl unit or
iK!vancer)
POOR PERFORMANCE AT LOW AND IDLE SPEEDS
1. Check ignition tim ing and valve
clearance
CORRECT
t
2. Chec k carbu retor pilot screw
adjustment
CORRECT
t
3. Check if air is leak ing past
carburetor insulator
NOT LEAKI NG
t
4. Try spa rk test
GOOD SPARK
Probable Cause:
INCORRECT
-------~.
111
Improper valve clea rance
)21
Improper ignition timing
(Faulty COl unit Or spark
advancer)
INCORRECT--------_
•
" I
Fuel _ air mixture too lean
)21
Fuel -air mixture too rich
LEA KING - - - - - - - - -___ . .
'"
Dete riorated insulator
O ·ring
(21
Loose carburetor
WEAK OR IN T ERMI TTENT SPARK- (1) Faulty, carbon or wet
207
fouled spark plug
(2) Faulty COl unit
(3) Alternator faulty
(4) Faulty ignition coil
(5) Fa~ty pulse generator
17-3