Craftsman 247.776370 - Manual (Page 14)

AND MAINTENANCE
A warning
Always stop engine and disconnect spark plug wire before performing
any maintenance or adjustments. Always wear safety glasses during
operation or while performing any adjustments or repairs.
GENERAL RECOMMENDATIONS
• Always observe safety rules when performing
any maintenance.
• The warranty on this chipper shredder does not cover items that
have been subjected to operator abuse or negligence. To receive
full value from warranty, operator must maintain the equipment as
instructed here.
• Some adjustments will have to be made periodically to maintain
your unit properly.
• Periodically check all fasteners and make sure these are tight.
ENGINE MAINTENANCE
Checking the Spark Plug
Clean spark plug and reset the electrode gap to 0.030” at least once a
season; replace every 100 hours of operation.
• Clean area around the spark plug base. Do not sandblast spark
plug. Spark plug should be cleaned by scraping or wire brushing
and washing with a commercial solvent.
• Remove and inspect the spark plug. Check gap to make sure it is
set at .030”. See Figure 11.
• Replace the spark plug if electrodes are pitted, burned, or the
porcelain is cracked.
Servicing the Air Cleaner
A
CAUTION
Do not use pressurized air or solvents to clean the air cleaner
cartridge.
The air cleaner prevents damaging dirt, dust, etc., from entering the
carburetor and being forced into the engine and is important to engine
life and performance. The air cleaner consists of a pleated filter and
a pre-cleaner that can be washed and reused. Never run the engine
without an air cleaner completely assembled.
Clean or replace the air cleaner every 25 hours of operation.
1. Loosen screws that hold the air filter cover.
2. Open cover and remove cartridge. See Figure 12.
3. Remove pre-cleaner from the cartridge. Discard old cartridge.
4. Install new cartridge. Install lip on pre-cleaner at the bottom of
cartridge pleats.
5. Close the cover and tighten screws.
NOTE: If the filter is torn or damaged in any way, replace it.
Check Engine Oil
1. Stop engine and wait several minutes before checking oil level.
With engine on level ground, the oil must be to FULL mark on
dipstick.
2. Remove oil fill dipstick and wipe clean with cloth.
3. Replace and tighten dipstick. Remove and check oil level. Level
should be at FULL mark.
4. If needed, add oil slowly - recheck. Do not overfill.
5. Wipe dipstick clean, replace and tighten. Remove and check oil
level. Oil level should be at FULL line on dipstick.
A
CAUTION
Do not overfil. Overfilling with oil may cause the engine to not start,
or hard starting, if over the FULL mark on the dipstick, drain oil to
reduce oil level to FULL mark on dipstick.
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