Removing Carbon Deposit; Valve Grinding; Showing Flywheel In Exploded Form - Matchless G3L Maintenance Manual

REMOVING CARBON DEPOSIT

Do not use a sharp implement for removing carbon deposit from the interior of the
cylinder head and the piston crown.
suitable and the use of such wilt obviate the risk of making deep scratches.
necessary to, avoid damaging the valve seatings and in no circumstances should any
abrasive material, such as emery, or emery cloth, be used for cleaning and polishing.

VALVE GRINDING

Before commencing valve grinding, carefully examine the face of each valve and, if
found to be deeply pitted, have them refaced.
for that purpose.)
cause undue and undesirable widening of the seats.
As a rule, inlet valves require very little attention and one light application of fine grinding
paste should be sufficient to restore an even matt finish to both valve face and seat.
The exhaust valves may require two, or even three, applications but, as already mentioned,
excessive grinding is both unnecessary and harmful.
A blunt piece of soft brass will be found quite
Illustration 9

Showing flywheel in exploded form

Any attempt to remove deep pit marks by grinding will inevitably
(Most garages have suitable equipment
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Care Is