OMH229937: 9870 STS Combine(9870 STS 725101- ), Block File: OUO6075_00008F0_19

Every 400 Hours

A-Fuel Precleaner Filter

B-Water Separator

C-Primary Fuel Filter

D-Secondary Fuel Filter

1. Fuel Precleaner Filter - Close fuel tank shut off valve. Remove fuel precleaner filter (A) and clean screen. Install fuel precleaner filter and open fuel tank shut off valve and allow bowl to fill (see Fuel Precleaner Filter Cleaning in Service Engine section.)

2. Water Separator - Check water separator (B) for water or when diagnostic trouble code is generated. Open drain and drain water out water separator (see Water Separator Primary Fuel Filter Draining in Service Engine section). Remove and retain water separator.

Primary Fuel Filter - Remove primary fuel filter (C) when performance decline is noticed or diagnostic trouble code is generated. Install new primary fuel filter and previously removed water separator.

3. Secondary Fuel Filter - Replace secondary fuel filter (D) when performance decline is noticed or diagnostic trouble code is generated. Remove fuel from filter and discard secondary fuel filter. Install new secondary fuel filter and turn key switch ON to prime fuel system (see Primary and Secondary Fuel Filter Replacing in Service Engine section).

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