Service Manual
DRIVE SYSTEMS
5 - 14 Single Stage Snowthrower Service Manual
BELT REPLACEMENT
The belt drive models use one of two systems; the
spring loaded or constant tension system and the
control bail system. Depending on the model you
might see a standard V belt or a wide flat belt with
several V grooves. Note there are two versions of the
multi-groove belt. While they look alike, there is a
difference in width. Use the parts list for your model to
assure you use the correct belt for the application.
To Replace The Drive Belt On A Constant Tension
System
Remove the belt cover on the left hand side of the
machine. Typically there are 5 fasteners holding the
belt cover on. Those in the front near the rotor are
bolts with locknuts. In the rear of the cover, there are
self-tapping screws. With the cover off, the drive
system is exposed. Lift the idler pulley and slide the
belt out towards you. Release tension on the idler
slowly. Then slip the belt off the engine and rotor
pulleys. With the belt removed, visually inspect the
rotor and engine pulleys for damage or wear and
replace as necessary. Inspect the idler pulley and the
idler arm to ensure free rotation and smooth travel.
The idler spring has one end hooked into the idler arm
and the other is typically hooked into a notch in the
frame directly below the idler. To install a new belt,
route the belt around the engine and rotor pulleys.
Then pull the idler arm upward and slip the belt under
the pulley. The arm must sit on top of the belt and
push it downward.
Figure 88 0623-05
Belt Replacement, Bail System
Remove the belt cover (Figure 89).
Figure 89 1854-04
The drive system is now exposed. Pull the idler pulley
up and slip the belt out from under the pulley, release
tension on the idler slowly. Slip the belt off the engine
and rotor pulleys and from under the brake arm
assembly.
Figure 90 0623-10
Reverse the process to install the new belt. Note the
belt must route under the brake and idler pulley. See
Figure 90.
(A) Idler Pulley
(B) Idler Spring
(C) Notch
A
B
C
(A) Engine Pulley
(B) Idler Pulley
(C) Brake Spring
(D) Brake Arm Assembly
(E) Rotor Pulley
(F) Roller
(G) Belt Guide
A
B
C
D
E
F
G