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Move the idler bracket to apply tension on belt and
tighten idler bracket nut. Fig.
10-A. Belt should
deflect approximately 3/8" with firm finger
pressure. Fig. 10-B. Rotate engine several times to
seat belt in grooves. Recheck belt tension and ad-
just as necessary.
To replace the belt,
remove the pulley
cover.
Loosen the nut on the idler pulley bracket which
will release tension on the belt. Fig.
12.
At this time, the belt can be rolled off the driven
pulley, or you can separate the pulley to remove it.
Fig. 10-A
Fig. 10-B
BELT REPLACEMENT PROCEDURES
A special belt is used to drive the transmission. It
was specially designed and manufactured for use
only on this mower.
NOTE:
Use only the belt available from Lawn-Boy No other
belt will function properly on this mower.
SAFETY WARNING:
Disconnect the spark plug
lead.
Fig. 12
It is necessary to remove the engine when replac-
ing the belt.
Remove the blade nut, blade and collar. Remove
three screws securing muffler and crankshaft sup-
port. Remove muffler. Fig. 13.
Fig. 13
Fig. 11
SERVICE BULLETIN REFERENCES..
20-3
OCTOBER 1984
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