FUEL STRAINER AND FUEL FILTER
A spin-on type fuel strainer and fuel filter (Fig. I) is used
on this engine. The spin-on filter cartridge consists of a
shell, element and gasket combined into a unitized
A 1" diameter twelve-point nut on the bottom of the filter
replacement assembly (Fig. 2). No separate springs or
is provided to facilitate removal and installation.
seats are required to support the filters.
Replace the filter as follows:
The filter covers incorporate a threaded sleeve to accept
the spin-on filter cartridges. The word "Primary" is cast
1. Unscrew the filter (or strainer) and discard it.
on the fuel strainer cover and the word "Secondary" is
cast on the fuel filter cover for identification.
2. Fill a new filter replacement cartridge about two-
thirds full with clean fuel oil. Coat the seal gasket lightly
No drain cocks are provided on the spin-on filters.
with clean fuel oil.
Where water is a problem, it is recommended that a
water separator be installed. Otherwise, residue may be
3. Install the new filter assembly and tighten it to one-
drained by removing and inverting the filter. Refill the
half of a turn beyond gasket contact.
filter with clean fuel oil before reinstalling it.
4. Start the engine and check for leaks.
Fig. 1 - Typical Spin-On Filter Mounting
Fig. 2 - Spin-On Filter Details