Craftsman 247.776150 Operator's Manual page 14

Service Muffler
Temperature of muffler and nearby areas may exceed 150˚ F (65˚C). Avoid
these areas.
• Inspect muffler every 50 hours, and replace if necessary. Replacement parts
for the muffler must be the same and installed in the same position as the
original parts.
Clean Engine
• Daily or before every use, clean grass, chaff or accumulated debris from
engine. Keep linkage, spring, and controls clean. Keep area around and
behind muffler free of any combustible debris.
• Keeping engine clean allows air movement around engine.
• Engine parts should be kept clean to reduce the risk of overheating and
ignition of accumulated debris.
Do not use water to clean engine parts. Water could contaminate fuel
system. Use a brush or dry cloth.
Carburetor Adjustment
The carburetor on this engine is not adjustable.
Engine Speed
LUBRICATION
Do not attempt to alter the engine speed by tampering with the engine's
governor linkage. Doing so could result in serious personal injury and
damage to the engine. The engine RPM has been set at the factory.
• Hopper Assembly- Lubricate the pivot points on the hopper assembly with
light oil once a season.
• Discharge Chute- Lubricate the pivot points on the discharge chute with light
oil once a season.
• Release Rod- Lubricate the release rod and spring with light oil once a
season.
CLEAN EQUIPMENT
• Clean the chipper shredder thoroughly after each use.
• Wash bag periodically with water. Allow to dry thoroughly in shade.
• If the flail screen becomes clogged, remove and clean as instructed below.
NOTE: Cleaning with a forceful spray of water is not recommended as it could
contaminate the fuel system.
SERVICE AND MAINTENANCE
WARNING
CAUTION
WARNING
REMOVING THE FLAIL SCREEN
Before performing any type of maintenance on the machine, wait for all
parts to stop moving and disconnect the spark plug wire. Failure to follow
this instruction could result in personal injury or property damage.
If the discharge area becomes clogged, remove the flail screen and clean area as
follows:
1. Stop the engine. Make certain the chipper shredder has come to a complete
stop.
2. Disconnect spark plug wire from spark plug and ground against the engine.
3. A. Remove the bag and two wing knobs on each side of the chute
deflector. See Figure 14.
C
B. Lift the chute deflector up to keep it out of the way.
C. Remove the two hairpin clips from each clevis pin which
extend through the housing and remove pins.
D. Remove the shredder screen from inside the housing and
clean the screen by scraping or washing with water. See Figure 14.
4. Reinstall the screen, making certain to reassemble the flail screen with the
curve side down.
5. Reattach the chute deflector with the hardware previously removed and
connect the bag to unit.
Sharpening Or Replacing Chipper Blades
1. Disconnect the spark plug wire and ground against the engine.
2. Remove the flail screen as instructed in the previous section.
3. Remove the chipper chute by removing three hex nuts and washers.
4. Remove the chipper chute support brace from the frame by removing the
hex bolts.
14
WARNING
B
A
D
Figure 14