Maintenance.11 - Simplicity 551M Operator's Manual

Single stage snowthrower
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MAINTENANCE
To prevent accidental starting of engine during
maintenance or service, always remove ignition key
from switch.
Removing Belt Cover
In many of the maintenance tasks, you will have to first remove
the belt cover, perform the task, and reinstall the cover.
A.
Remove key from the ignition switch.
B.
Remove the four screws from the side cover.
C.
Remove the cover.
D.
Lubricate the pivot point and reinstall the cover in
reverse order.
LUBRICATE
LUBRICA¬
TION
REPLACING
DRIVE BELT
1
.
2
.
3.
5.
6
.
1.
2
.
3.
4.
5.
6.
Apply a few drops of light machine oil to the upper end of the
clutch control cable. Wipe off any excess oil. This will ensure free
movement of cable through outside casing. See figure 9A.
The drive pulley end of auger shaft is supported by a sealed
ball bearing and requires no lubrication. The ball bearing on
the other end of the auger shaft is also sealed and will not
require lubrication.
At the beginning of each snow throwing season, remove dis¬
charge chute and generously lubricate the steel flange at the
back of the rotating ring with light grease such as Lubripiate.
Rotate the ring with crank to distribute the grease. See figure 9B.
Remove the belt cover and lightly apply oil to the pivot point
for the idler pulley arm. MAKE SURE THAT YOU DO NOT
SPILL OIL ON THE BELT OR THE PULLEYS. See figure 9C.
The two-cycle engine used on this snowthrower is lubricated
by the gasoline/oil mixture. Observe recommended gasoline to
oil mixture ratio shown on pages 4 & 5.
The drive belt idler pulley has a sealed bearing that requires
no lubrication.
Remove key from the ignition switch and disconnect spark
plug.
Remove the belt cover.
Remove the engine cover/cowling following instructions on
page 9.
Move the auger control bail on the han¬
dle and slip the belt out from between
the brake lever and the roller and away
from the idler pulley. See figure 10.
Remove the belt from the engine and the)
auger pulleys.
Install the new belt around the engine
and auger pulleys and underneath idler
pulley. THE RIBBED SIDE OF THE
PULLEY MUST BE INSIDE, AGAINST
THE AUGER AND ENGINE PULLEYS.
Slip belt into place between the brake
lever and the roller.
LUBRICATE
FIGURE 9B
11

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