Matchless 1964 G12 650, Инструкция

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TO ADJUST OVERHEAD ROCKERS (Tappet Clearance)—TWINS
It is essential to correctly position the engine when making this adjustment. Start by
removing the right side rocker cover, use spanner 018055 and take out the sparking plug.
Rotate the engine with the kickstarter until the inlet rocker goes down and comes up
again.
Insert a short length of stiff wire through the sparking plug hole and hold the wire vertical,
rotate the engine until the piston is on the top of the stroke (the wire stops moving).
Release slightly the nut for clamp bolt (8) with spanner 015264.
Use a screw driver in the slot in the rocker spindle, turn the screw driver until the rocker
is raised clear of the valve end. Place a feeler ·008" thick on the valve end, turn the screw
driver until the rocker just makes contact with the feeler, re-tighten the clamp nut and
take out the feeler. Deal with the other valve in a similar manner, then turn to the
lefthand cylinder.
NOTE—Do not over tighten the clamp nut.
Engines made before 1960 use ·006" rocker clearance.
Engines with speed Kit cams use ·012" rocker clearance.
If the rocker spindle clamping bolt nut is unscrewed to an unnecessary extent
the rocker spindle will then move sideways, under the influence of the spring
washer and then the thrust washer at the end of the rocker spindle may drop
out of exact location and, unless noticed and re-positioned, damage to the
flanged end of the rocker spindle may result upon re-tightening the clamping
bolt nut. Care to avoid this is necessary. (See illustration 12).
SPEED K I T CAMS
The running rocker clearance is ·012" for all valves.
1
2
3
4
5
6
7
8
9
10
11
12
PLAIN WASHER—MENTIONED
ABOVE.
SPRING WASHER.
PLAIN WASHER.
ROCKER.
CYLINDER HEAD.
ROCKER CLEARANCE ·008".
VALVE SPRING CAP.
CLAMPING BOLT NUT.
CLAMPING BOLT WASHER.
CLAMPING BOLT.
CUTAWAY ON ROCKER SPINDLE
ECCENTRIC ROCKER SPINDLE.
Illustration 12
Rocker Adjustment
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