Triumph Tigress TW2, Service Sheet

Page: 38 / 75

float chamber and remove the float chamber complete with the nylon float. Be very careful not to damage the
paper gasket which will be found between the float chamber and the body of the carburetter.
The float can now be lifted out and the chamber cleaned thoroughly of any accumulation of water or
foreign matter.
If the jets are to be removed, the screwdriver should be in good condition. Never use one which is
badly worn and which can slip and possibly shave off a portion of the jet.
Unscrew the jets by means of the screwdriver (they have normal right-hand threads and are therefore
unscrewed anti-clockwise), and blow out any foreign matter. Do not in any circumstances use a piece of
wire to poke a jet out. The pilot jet (15) is situated at the corner of. the body and the main jet (20) in the
centre.
Having cleaned the jets they should be replaced, again taking extreme care not to shave a portion of
the jet away by allowing the screwdriver to slip since any portion of metal may be jammed in the jet
aperture.
If the paper gasket between the float chamber and the body of the carburetter has been damaged,
it should be replaced with a new one. Place the gasket in position, see that the nylon float is correctly
positioned in the float chamber and replace the chamber, screwing in the two small ~" screws. Make
sure that these are tight before replacing the carburetter.
To reconnect the carburetter, place the screw with the small fibre washer against the smaller diameter of
the banjo union, insert the cylindrical gauze filter, then place the larger fibre washer in position and
screw up on to the float chamber, finally tightening with a screwdriver. Now work the carburetter
down into the aperture and gently in position over the two studs. Again, care should be taken to see
that the gaskets are in good condition. Replace the two I " nuts and washers, tightening each one a
little at a time so as not to distort the manifold joint face. Replace the petrol tap support bracket over
the left hand side rocker box stud and replace the
: 11"
nut.
Rear Chain Adjustment.
The total up and down movement of the rear chain should
be 1". This can be checked by taking out the inspection plug
situated half-way along the case towards the top.
When adjustment is necessary, slacken the locknut on the
stud projecting from the lower edge of the case, and screw
the stud in or out as required. Screwing in will tighten the
chain and screwing out will slacken it.
Fig. 29. Rear chain adjuster.