Stone WolfPac 3100, Service & Parts Manual, Page: 23 / 124

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3. MAINTENANCE
WolfPac 3100/WolfPac 3100R/WolfPac 3100D
3.7 FUEL LINES
Inspect fuel line condition and clamps weekly. Replace
fuel lines every 2 years.
3.8 ENGINE OIL AND FILTER
•
Replace oil at 20 hours, then change oil every
100 hours. Change the oil filter every 200
hours.
•
Remove the oil filler cap, drain bolt or cap (and
oil filter when required). Drain oil into a
suitable container.
•
Clean and install the drain bolt or cap, tighten
securely. When required install new oil filter,
lightly oil filter seal.
•
Fill with the recommended oil, fill to the upper
limit mark on the dipstick, and tighten the oil
filler cap securely.
•
Run engine for 2 – 3 minutes, stop engine and
check oil level and check for leaks.
NOTICE:
•
DO NOT overfill engine oil reservoir. It may
cause erratic engine operation.
•
Please dispose of used motor oil and filter in a
manner that does not harm the environment.
Under heavy loads, change engine oil and filter more
frequently.
3.9 AIR CLEANER
Foam Pre-cleaner: Clean in warm soapy water, rinse
and dry thoroughly. Apply oil to the foam and squeeze
out excess oil. The engine will smoke if too much oil is
left in the foam.
Paper Element: Tap the element lightly on a hard
surface to remove excess dirt or blow pressurized air
(30 psi max.) through the filter from the air cleaner
cover side. Do not brush the dirt off.
On diesel air cleaner, open evacuator valve once a week
to rid air cleaner of large particles of dust and dirt.
Replace elements if damaged or excessively dirty.
3.10 SPARK PLUGS (Honda only)
Recommended spark plug:
BPR6ES (NGK)
W20EPR-U (NIPPONDENSO)
To ensure proper engine operation, the spark plug must
be properly gapped and free of deposits.
Clean and replace at scheduled maintenance. Clean
engine before removing spark plugs. Visually inspect
the spark plug, discard if insulator or tip is damaged.
Check that the spark plug washer is in good condition.
If spark plug is to be reused, clean with a wire brush
and set plug gap .028 - .031in (.70 - .80mm). Thread
the spark plug in by hand to prevent cross threading.
After the spark plug is seated, tighten with a spark plug
wrench to compress the washer.
•
If installing a new spark plug, tighten 1/2 turn
after the spark plug seats to compress the
washer.
•
If reinstalling a used spark plug, tighten 1/8 –
1/4 turn after the spark plug seats to compress
the washer.
NOTICE:
•
The spark plug must be securely tightened. An
improperly tightened spark plug can become
very hot and may cause engine damage.
•
Use only the recommended spark plug or
equivalent. A spark plug that has an improper
heat range may cause engine damage.
3.11 ENGINE RPM
Start the engine and allow it to warm up to normal
operating temperature, check the idle speed 1,400 +
100, and adjust idle stop screw as required on Honda.
For Kubota, check idle speed at 1200 +/- 50.