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exhausting in the system is required, pump fuel with manual pump and then tighten the nut on manual
lever. The joint of fuel suction pipe is set at the bottom of the transfer pump; and inside the joint bolt,
there is a small sieve which is arranged at the front portion of the fuel passage impeding most of
impurities. Hence do not throw this small sieve away in usual inspection; furthermore, this sieve shall
be cleaned frequently, otherwise the fuel passage will be clogged resulting in abnormal operation of
diesel engine.
2. Diesel filter provided to diesel engine is single- or double-grade spin-on filter with bleed screw on the
top. The filter element shall be replaced regularly. The interior shall be prevented from dirty when in
maintenance; especially, the seal at every portion shall be noticed when in assembling. In order to
guarantee diesel engine to get clean fuel, automobile accessory manufacturers or users are required to
add one-stage oil-water separator before this filter.
3. Injection pump is the heart of diesel engine so that the performance of the engine depends on that of
the pump. The pump has been adjusted properly before delivery and sealed with lead already. Do not
unseal. Maintenance and adjustment is required to be carried out on special test stand by professional.
