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General Recommendations; Engine Maintenance; Service And Maintenance; Maintenance Schedule - Craftsman 247.77638 Manual Del Operador

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Warning
Before performing any type of maintenance/service, disengage all
controls and stop the engine. Wait until all moving parts have come to
a complete stop. Disconnect spark plug wire and ground it against the
engine to prevent unintended starting. Always wear safety glasses during
operation or while performing any adjustments or repairs.
interval
Each Use
1.
2.
3.
1st 5 - 8 hours
1.
25 hours
1.
2.
3.
Annually or 50 hours
1.
2.
Annually or 100 hours
1.
Before Storage
1.
† Under heavy load or in high temperatures
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 all safety rules found on product labels and in
this operator's manual when performing any maintenance. Safety
rules can be found on the product labels and in this Operator's
Manual beginning on page 3.
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.

SERVICE AND MAINTENANCE

MainTEnancE ScHEDUlE

item
Engine oil level
Loose or missing hardware
Unit and engine.
Engine oil
Engine oil†
Air cleaner
Control linkages and pivots
Engine oil
Muffler
Spark plug
Fuel system
Follow the maintenance schedule given below. This chart describes
service guidelines only. Use the Service Log column to keep track of
completed maintenance tasks. To locate the nearest Sears Service
Center or to schedule service, simply contact Sears at
1-800-4-MY-HOME®.
Service
1.
Check
2.
Tighten or replace
3.
Clean
1.
Change
1.
Change
2.
Replace
3.
Lube with light oil
1.
Change
2.
Inspect
1.
Clean, check and reset gap, or
replace spark plug.
1.
Run engine until it stops from lack of
fuel or add a gasoline additive to the
gas in the tank.
Electrode
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.
14
Service log
Porcelain
.030 (.76 mm) gap
Figure 11

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