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5.2 MAINTENANCE
By following a careful service and maintenance
program for your machine, you will enjoy many
years of trouble-free service.
5.2.1
BELT TENSION AND
ALIGNMENT
Rotational power from the engine is transmitted to
the blower through the belt drive. To obtain
efficient transmission of power and good belt life,
the belts must be properly tensioned and the
pulleys aligned.
Belts that are too tight will stretch and wear quickly
or overload the bearings on the input shaft or
blower; Belts that are too loose will not transmit
the required, power and will slip, overheat and
wear quickly. Pulleys that are not aligned will result
In rapid belt wear.
MODEL
BELT TENSION
New
Belt
4510D
15
5614D
15
6614D
14
7614D
14
Table 4 Belt Deflection
DEFLECTION
Old Belt
14 lbs
½ in (12.7mm)
(6.3kg)
14 lbs
½ in (12.7mm)
(6.3kg)
12 lbs
3/8 in (9.5mm)
(5.4kg)
12 lbs
3/8 in (9.5mm)
(5.4kg)
Follow this procedure when checking and
adjusting belt tension and pulley alignment.
1. Clear the area of bystanders, especially small
children.
2.
Place all controls in neutral, stop the engine,
remove ignition key and wait for all moving
parts to stop before dismounting.
3.
Unlatch and remove the belt cover. Lay to the
side.
37
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