Craftsman 919.157260 Manual Del Usuario página 20

Belt – Replacement and
Adjustment
if parts of the body or loose items
get caught in moving parts. Never
operate the unit with the belt guard
removed. the belt guard should
be removed only when the air
compressor is turned off the spark
plug wire is disconnected.
Belt Guard – Removal
1. Disconnect the spark plug wire on
the engine and release all air tank
pressure.
2. (Refer to fi gure) Remove the four
screws (A) from the belt guard.
The belt guard can now be
removed.
Belt – Replacement
1. Disconnect the spark plug wire on
the engine and release all air tank
pressure.
2. Remove the belt guard as
previously described.
3. Mark engine position on saddle.
4. Loosen stiffener bracket screws
on engine.
A13567 A13567
Serious injury or
damage may occur
A
C
5. (Refer to Figure) Being careful
not to remove the stiffener plate
under the saddle, loosen the six
engine mounting bolts (C).
6. Slide engine toward pump to
remove tension from the belt, and
then remove the old belt.
7. Install the new belt over the
pulleys.
NOTE: The belt must be centered
over the grooves on the engine
pulley and fl ywheel.
8. Slide the engine back into its
regular position. Line the engine
up with the mark made earlier on
saddle.
Belt Tension - Adjustment
1. Hold belt tension and securely
tighten two engine mounting
bolts.
2. Measure correct belt tension.
Proper tension is achieved when
a three (3) pound weight or
equivalent fi nger pressure applied
midway between the motor
pulley and compressor fl ywheel
causes a 1/4" defl ection of the
belt as shown.
3. When proper belt tension is
achieved, tighten the remaining
engine mounting bolts.
4. Tighten stiffener bracket screws.
NOTE: Once the engine pulley
has been moved from its factory
set location, the grooves of the
fl ywheel and pulley must be
aligned to within 1/16" to prevent
excessive belt wear. Verify the
alignment by performing the
following Pulley and Flywheel
- Alignment.
20- ENG