Craftsman 247.776370 - Manual (Page 17)

SHARPENING OR REPLACING THE SHRED­
DER BLADE
1. Stop the engine and make certain that ail moving parts have
come to a compiete stop.
2. Disconnect the spark plug wire and ground against the engine.
3. Lower the hopper assembly and block up the housing.
4. Remove the six hex lock nuts and flat washers from the weld
studs on the flail housing. Retain the hardware.
5. Carefully separate the hopper assembly from the impeller
assembly and remove the support plate.
NOTE: When reassembling the support plate, make certain the
embossed tab faces inward towards the impeller.
6. Remove the two wing knobs that secure the chute deflector and
raise the chute.
7. Insert a 1/2” or 3/4” diameter pipe through the flail screen into the
impeller to keep it from turning or remove the flail screen and
insert a piece of wood into the chute opening.
8. a. Remove the two internal hex screws, lock washers, and hex
lock nuts which secure the shredder blade to the impeller,
b. Remove the hex bolt, lock washer, and flat washer to
completely free shredder blade. See Figure 16.
NOTE: Use a 3/16” hex key (Allen) wrench on the outside of the
shredder blade and a 1/2” box (or socket) wrench on the inside of the
shredder blade. Hold the Allen wrench stationary and rotate the box
(or socket) wrench to loosen the nut. Use caution when removing the
blade to avoid contacting the weld studs on housing.
IMPORTANT: When sharpening the blade, follow the original angle
of grind as a guide. It is extremely important that each cutting edge
receives an equal amount of grinding to prevent an unbalanced blade.
An unbalanced blade will cause excessive vibration when rotating at
high speeds and may cause damage to the unit. The blade can be
tested by balancing it on a screwdriver or nail. Remove metal from the
heavy side until it is balanced evenly.
MAINTENANCE SCHEDULE
AWARNING
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.
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®.
Each Use 1. Engine oil level
2. Loose or missing hardware
3. Unit and engine.
1. Check
2. Tighten or replace
3. Clean
1st5 - 8 hours 1. Engine oil 1. Change
25 hours 1. Engine oilt
2. Air cleaner/ Pre-cleaner
3. Control linkages and pivots
1. Change
2. Clean or replace
3. Lube with light oil
50 hours 1. Engine oil 1. Change
Annually or 100 hours 1. Sparkplug 1. Clean, replace, re-gap
Before Storage 1. Fuel system 1. Run engine until it stops from lack of
fuel or add a gasoline additive to the
gas in the tank.
t Under heavy load or in high temperatures
17