Dnepr MT9 - Carburetor Repair; Intake and Exhaust Systems Repair; Petrol Tank;Petrol Cock and Hoses Repair; Repairing the Fuel Supply System Units

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2. REPAIRING THE FUEL SUPPLY SYSTEM UNITS
R.epairing the Petrol Tank
Belated reconditioning of the petrol tank, especially in the case
of petrol l eakage, may lead to grave consequences - inflammation
oi petrol that may get on the hot parts of the engine.
• Inspect the petrol tank and check it for the abse nce of cracks,
dents, sca ling paint and other defects. Check the petrol tan k for
air- tightness under a pressure of 0.4 kgf/cm
2
by immersing it into
water.
• In case any cracks are detected, weld them up after thoroughl y
•
\\·ashing the tank with soda solutio n.
The
spots where the paint has sca l ed off should be th oroughly
cleaned and re -paint ed.
R.epairing the Petrol Cock and Hoses
The petrol cock sh ould be checked for air-tightne ss when t urned
off, and for full flow of petrol into the hoses, when open.
In the case of poor air-tightness, dismantle the pet rol cock and
grind in the plug wilh paste, following which thoroughly wa sh out
lhe petrol cock.
Disassemble the settler and clean ou.t the filler, wash it in petrol.
Inspect the petrol h oses and make sure they arc not swo ll en with
petrol, replace the h oses, if necessary.
R.epairing the Carburettor
The carburettor has to be repaired and, con s equentl y. dis nsse mbl-
cd o nly when this is indispensable for the correct and re li able opc-
ralion of the motorcycle. During externa l inspecti on of the c arbur et -
lor that has been subjected to partial or total disass e mbly, pa rt icu ls r
c are must be taken to check the wear of the throtU c, air-light ness
of the float, flatness of lhe carbu reltor fastening flange.
If the flange surface is bent, level it by filing.
The float that h as lost its air -t ightn e ss must be repla ced by a
new one. In exceptional cases, it is permis sible lo c areful ly so lder
the float after first drying it. In doing so, avoid increa s ing the
weight of lhe float by excessive amount of solder.
The j els must be checked and, if necessary, se l ected of proper
~ ize, using only special devices .
XIIL R.EPAIR.ING THE INTAKE AND EXHAUST SYSTEMS
Th e intake and exhaust systems (air filler, air choke, inlet bran ch
pipes, exhaust pipes and s ilencer s) shou ld be repaired as needed,
when insp ecti ng them during partial or total dis assembly of the mo-
torcycle, and also when any defects are found lh at make irnposs ibk
the further usage of th e intake and exhaust system s.
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