Craftsman 636.796912 User Manual
Page 9
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Table 2
. Engine
overheatsd
Improper fuel, used
Spark plug defectiva
' ibumt! ............ ..............
As cooling fins dog, air
' does not pass well '
Excessive deposits itt
■ combustion chamber
Use fuel with correct mixing ratio,
' ' Never use gasoline of poor quality.
...... Replace.
..... . Clean fins,
...... . Disassemble and remove carbon.
3
U»
.£
•o -
a
n
c
'm
c
m
. Firing function.
defective
, Carburetor _
defective
. Plug damaged or fouled..,,...... Replace or clean.
Combustion poor due to
,
. .
Mvui
Check wiring,
defective wiring
’
Needle setting
'incorrect
Carburetor overflow
. Air cleaner dogged ................
Readjust,,
........ Refer to Table 1,
Clean as necessary.
_ Other
troubles
Compression insufficient
(piston ring stuck or
worn
out)
Cylinder chrome plating
' peeled or worn out ......................
Exhaust port dogged with
' carbon
............. ..............
Throttle is not fully
’ open .............. ............ ......... ............
Disassemble, check and replace
, if necessary.
. Replace cylinder,
. Clean as necessary.
, Readjust,