Tightening The Frame Bearings; Cleaning Your Petrol Filter And Tank; Welding Parts Back On - MINSK Repair Manual

Tightening the Frame Bearings
The entire back of the bike where the chain and
wheel are can move independently from the engine
block and main frame because of a set of tough
rubber plugs at the point where the back wheel's
brace frame connects to the main frame. These
rubber plugs allow the whole back system – chain,
wheel and suspension – to move up and down when
the bike goes over bumps. These rubber plugs occasionally wear down, causing
extra strain on the chain, drive sprocket and back wheel sprocket as the three parts
are no longer lined up in a straight line. The only way to spot faulty rubber plugs
is to shake the bike from side to side and observe the movement of the back
wheel's frame in relation to the engine block. If you can see the back of the bike
moving a little irregularly from the main then get a mechanic to fix the rubber
plugs. Otherwise damage will be done to your chain, drive sprocket and back
wheel sprocket.
Cleaning your Petrol Filter and Tank
Paint, rust, grit and muck will always get into the
petrol tank. Luckily the petrol filter stops most of
this from entering the carburettor. But over time the
filter will fill up with this gunk and you will need to
clean it out.
Simply unscrew the petrol filter which is below
the petrol on/reserve/off lever and clear out the sump
of any water or gunk – stuff accumulates in there
frequently. You will need an adjustable spanner to do this. Also make sure that the
filter has a tight fitting, plastic sealed piece of gauze in it. If not then buy a new
one, it's cheap.
To clean the petrol tank, first remove it by unscrewing the two bolts on either
side of it at the back. Then fill it up with a litre of non-oil petrol and give it a good
rattle and shake. Then empty it out, pick out any pieces of rust or grit and then
repeat the whole process with the same petrol a few times more. This should get
rid of most of the muck and water.
Welding Parts Back On
There are two kinds of welding – electric and gas. Gas is suited for the frame
and other heavy duty spots. Clean the area first and make sure the guy paints the
weld after to stop it from rusting. If you go for some electric welding – it is
stronger than gas welding in certain circumstances – then you must remember to
unplug either the wire going into the sparkplug or one of the connection plugs
©Digby Greenhalgh 2000
Minsk Repair Manual
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