halves of the coupling relatively to each other
against the springs, i.e. into the "advance"
position, and hold it in this position with a piece
of wire.
To set the timing, turn the engine until the
pistons are 3/8 to 7/16
in. before top dead centre
on the compression stroke of the left hand
cylinder, i.e. with both valves closed.
Insert a thin piece of tissue paper between the
points of the contact breaker and turn the
magneto forwards until the paper can just be
pulled out, making sure that the rotor arm of the
distributor when replaced will be pointing
towards the segment connected to the left hand
sparking plug lead.
Tighten the sprocket and auto-advance
device on to the magneto shaft, taking care that
it does not slip.
Remove the piece of wire holding the auto
advance mechanism.
The timing can be checked by removing the
cap from the magneto and holding the rotor arm
of the distributor in the advanced position, which
is 3/8 - 7/16 in. before top dead centre, without
the necessity of taking off the timing cover.
On no account must the cam be altered
from its original position on the
rotor shaft or
the efficiency of the magneto will be affected.
5. Primary Chain Adjustment
The tension of the primary chain can be
checked through the inspection cover in the
primary chain case and, should it require
adjustment, access to the adjuster is gained by
removing the chain case cover, which is held in
position by a single nut. Before removing the
nut, place a tray under the engine to catch the oil
from the chaincase.
Beneath the bottom run of the chain is a
curved slipper on which the chain rests and
which may be raised or lowered by turning the
adjusting screw after having first slackened the
locknut.
A rubber button is fitted to the end of the
adjusting screw to prevent the transmission of
chain noise to the chaincase and this is held
against the chaincase by a hairpin spring, which
prevents it from bouncing.
After replacing the chain cover, remember
to replenish the chaincase with oil.
Do not adjust the chain to be dead tight but
rotate the engine slowly and, while doing so, test
the tension of the top run of the chain by
pressing it up and down with the fingers. Adjust
the tension so that there is ¼ in. up and down
movement at the tightest spot.
Re-tighten the locknut on the adjusting
screw. Replace the chain cover and replenish
with oil.
6. Timing Chain Adjustment
Before adjusting the tension of the timing
chain, turn the engine until the chain is in its
tightest position and any slack is between the
rear cam sprocket and the timing sprocket on
the engine shaft.
Section C4 Page 3
www.hitchcocksmotorcycles.com
Summary of Contents for CONSTELLATION 1958
Page 5: ...1959 CONSTELLATION w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 7: ...w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 12: ...1956 SUPER METEOR w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 13: ...w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 19: ...1957 SUPER METEOR w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 21: ...Section C4 Page 2 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 39: ...1959 SUPER METEOR w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 43: ...1961 SUPER METEOR w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 45: ...Section E4 Page 2 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 52: ...Section E7 Page 5 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 55: ...Section F3 Page 2 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 60: ...Section F4 Page 3 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 63: ...w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 67: ...1961 CONSTELLATION w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 80: ...Section H5 Page 1 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 98: ...Section M6 Page 2 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 99: ...Section M6 Page 3 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 100: ...Section M6 Page 4 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 101: ...Section M6 Page 5 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 103: ...Section P1 Page 2 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...
Page 104: ...Section P1 Page 3 w w w h i t c h c o c k s m o t o r c y c l e s c o m ...