Ariens 911110 - P 21LM - Manual (Page 20)

GB - 20
DRIVE BELT REPLACEMENT
(self-propelled models)
To remove drive belt:
1. Disconnect spark plug wire from spark
plug.
2. Remove transmission cover.
3. Disconnect idler return spring from idler
arm. See Figure 17.
4. Disconnect the wheel drive cable from
transmission mount, and then
disconnect drive cable spring from idler
arm.
5. Remove belt from transmission input
pulley and transmission idlers, and then
push the belt out through the belt
channel.
6. Put the unit in the service position. See
SERVICE POSITION on page 19.
7. Remove blade and blade adapter from
the crank shaft.
8. Remove the belt from the engine pulley,
and then pull the belt through the belt
channel. See Figure 18.
To install the drive belt:
IMPORTANT: Be sure the belt seats in idler
and pulley grooves with the idler touching the
back (flat) side of belt.
1. Install the new belt on the transmission
input pulley and idlers, route it through
the belt channel, and then install the belt
on the engine pulley. See Figure 19.
Figure 17
1. Belt
2. Transmission
Input Pulley
3. Idler Return
Spring
4. Wheel drive
cable
5. Drive Cable
Spring
6. Idler Arm
6
1
3
4
5
2 Figure 18
1. Blade
2. Drive Belt
3. Engine Pulley
4. Blade
Adapter
5. Bolt, Lock
Washer &
Flat Washer
6. Belt Channel
3
5
1
4
2
6
Figure 19
Push belt
through belt
channel and
install it on the
engine pulley.
Note belt routing
around idlers.