Basco 425622 78B Series, Instruction Book

Page: 34 / 44

MAINTENANCE
34
1740333SM
HOW TO REPLACE THE MOTION DRIVE BELT
REMOVAL
1. Remove the mower housing. See the instructions on “How To
Remove The Mower Housing”.
2. Remove the mid − idler pulley .
3. Disconnect the idler spring (Figure 36).
4. Remove the idler pulley and spacer (Figure 36).
5. Remove the V − idler pulley and spacer.
6. Remove the motion drive belt from the drive pulley
(Figure 36).
7. To remove the motion drive belt from the stack pulley , pull the
front end of the belt under the stack pulley and then back
between the stack pulley and the
steering plate
(Figure 34).
8. Remove the access panel (Figure 35).
9. Remove the two screws that attach the steering shaft
assembly (Figure 35). Raise the steering wheel and steering
shaft assembly . Pull the motion drive belt under the steering
shaft assembly .
10. Remove the motion drive belt . A correct replacement part or
assistance is available from an Authorized Service Center in
your area.
INSTALLATION
1. Slide the motion drive belt between the stack pulley and the
belt guides (Figure 34). Install the motion drive belt on the
top pulley of the stack pulley . Make sure the “V” side of the belt
is against the pulley.
2. Push the motion drive belt through the opening between the
steering plate and the engine plate.
3. Install the end of the motion drive belt around the drive pulley
(Figure 36).
4. Put the motion drive belt around the V − idler pulley . Install the
motion drive belt, V − idler pulley and spacer .
5. Put the belt around the idler pulley . Fasten the idler pulley and
spacer with the hex nut. Make sure the flat side of the belt is
against the idler pulley . Also, make sure the belt is not twisted.
6. Connect the idler spring (Figure 36).
7. Install the mid − idler pulley .
8. Check the routing of the motion drive belt (Figure 36). Make
sure the motion drive belt is installed correctly on the idler
pulleys and inside all belt guides.
9. Attach the steering shaft assembly to the steering plate with
two screws (Figure 35).
10. Attach the access panel (Figure 35).
11. Before you use the unit, check the adjustment of the clutch. See
the instructions “How To Check And Adjust The Clutch”.
12. Install the mower housing. See the instructions “How To Install
The Mower Housing”.
Motion
Drive
Belt Figure 34
FRONT
Stack Pulley
Steering
Plate
Belt Guides
Figure 35
Screw
Steering Shaft
Assembly
Motion Drive
Belt
Access Panel
Stack Pulley
Motion Drive Belt
Drive Pulley
Figure 36
Belt Guide
V − Idler Pulley
Idler Spring
Belt Guide
V − Idler Pulley
Idler Pulley
Spacer
Idler Spring
Spacer
Mid − Idler Pulley