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Section 3: Adjustments
ZSR54, & ZSR60 Accu-Z Razor
®
Zero Turn Mowers 357-344M
Table of Contents
12/15/15
Ground Drive Belt Adjustment
Refer to Figure 3-4:
The ground drive belt (#1) is tensioned at the factory and
will require readjustment as the belt stretches from wear.
Replace belt when it becomes excessively worn or
damaged. Instructions for replacing the ground drive belt
are provided on page 40.
1. To check tension of drive belt (#1), apply force with a
tension tester to the belt mid span (point A between
pump pulleys) until the belt deflects 1/4". The force
required to get this deflection should range between
7 and 10 lbs.
2. Adjust take-up assembly (#3) until 7 to 10 lbs. of belt
tension is achieved:
a. Loosen jam nuts (#4) and rotate take-up
rod (#5) until drive belt is tensioned properly.
b. When adjustment is complete, keep take up rod
from turning any farther and retighten jam
nuts (#4) to the correct torque.
Deck Drive Belt Adjustment
Refer to Figure 3-5 & Figure 3-6:
The deck belt (#3) remains in constant tension by means
of the spring tensioned idler (#6). If belt slips under
normal operating load conditions, retention spring (#11)
by tightening up eyebolt (#10). Replace deck belt when it
becomes excessively worn or damaged. Instructions for
replacing the deck drive belt are provided on page 40.
With deck height set at 3", check length of deck drive
extension spring (#11) to verify if belt tension is correct.
Installed spring length should be 4 3/4" +/- 1/8" (See
Figure 3-6). Vary spring length by adjusting length of eye
bolt (#10). Additional adjustments to the spring length
can be made by changing which hole in Arm (#12) the
spring in attached. There are 2 holes for this adjustment.
IMPORTANT: Do not over tension drive belts to
compensate for a badly worn belt or pulley.
An over tensioned belt can cause the belt and drive
components to break prematurely resulting in a
safety hazard to the operator and bystanders.
An under tensioned belt can cause the belt to slip
and become damaged.
IMPORTANT: Do not over tension drive belts to
compensate for a badly worn belt or pulley.
IMPORTANT: Excessive belt tension may lead to
premature damage of belt and drive components
and is also a safety hazard to the operator and
bystanders.
Not enough belt tension may lead to premature belt
damage due to excessive belt slippage.
Ground Drive Belt Adjustment
Figure 3-4
Deck Drive Belt Adjustment
Figure 3-5
Deck Drive Belt Adjustment
Figure 3-6
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