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27OM-402
7.4 Changing Fuel Filters
Y Stop engine and let cool.
1 Secondary Fuel Filter
Remove filter.
Apply thin film of oil to gasket on
new filter. Install filter.
2 Primary Fuel Filter
3 Fuel Line
Remove filter. Inspect all fuel lines
and replace if cracked or worn.
Install new filter and clamps. Wipe
up any spilled fuel.
Start engine, and check for fuel
leaks.
Y Stop engine.
Tighten connections as necessary.
2
3
Ref. ST-159 215-E / Ref. ST-175 918-C
1
Tools Needed:
7.5 Servicing Air Cleaner
Ref. ST-175 918-C / Ref. ST-159 219-D / Ref. S-0698-B
Y Stop engine.
Y Do not run engine without air
cleaner or with dirty element.
Y Use only high pulsation-type
replacement filter listed on
maintenance label or engine
damage may occur.
1 Dust Cap
2 Element
3 Housing
4 Dust Valve
To Clean air filter:
Wipe off cap and housing. Remove
cap and dump out dust. Remove
element. Reinstall cap to keep out
dust.
Y Do not clean housing with air
hose.
Clean element with compressed air
only. Keep nozzle at least 1 in (25
mm) from inside of element. Max. air
pressure: 30 psi (207 kPa). Do not
remove plastic fins. Replace ele-
ment and valve if damaged. Replace
element yearly or after six clean-
ings.
Reinstall element and cap (cap ar-
rows pointing down).
3
2
1
Blow Inspect
4