Ignition Timing; Cylinder Compression - Honda CH250 Elite 1986 Service Manual

MAINTENANCE
NOTE
13-2),
light to the
13-2).
at idle is correct if the index notch
mark at 1,500 rpm.
and remove the left rear cover. Disconnect the
cap and remove the plug.
Insert the compression guage.
the throttle and crank the
Remove the left rear caver
Warm up the
the
To check the advance, raise the engine speed to 7,000 rpm;
the index notch should be between the advance marks.
• Crank the untill the gauge stops The
maximum reading is reached within 4~ 7 seconds.
NOTE
the is incorrect, check the COl unit, pulse
rotor and pulse generator, and faulty parts. Refer to
Section 16 Electrical Equipment.
CYLINDER COMPRESSION
Connect a tachometer and
Start the
The
with the
• The Ignition system is
and cannot be timing proce-
dures are given to inspect the function of the COl compo-
nents.
Remove the right rear cover
Remove the hole cap.
IGNITION TIMING
185
±
28
psi)
If cornoressiion
""'<''''''\.1
C'vlinder head
Worn PistOI1/ring!c\I'/inder
coml:lression is
it indicates that carbon
have
<:n';'L;UOIIUII<I''''''
on
the combustion chamber and/or the
3..9