Service Manual

4 - 8 Service Dealer’s Guide to Great Quality of Cut
Checking and Adjusting the Blade Level
Riding Mowers
Each series of riding mower uses different cutting units
with unique suspension systems. Because of that, look
for the type of riding mower you have and read the
section that applies. IMPORTANT: perform all the
steps under “Checking Blade Level—All Mowers”
before beginning to measure.
825 Rear Engine Rider
The 825 Rear Engine Rider has no provision for normal
adjustment of side-to-side level or front-to-rear pitch
(Figure 29).
Figure 29
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Adjusting Side-to-Side Level
If the mower is more than 1/8 inch (3.1mm) off side to
side, correction is recommended. Since this is not a
normal adjustment, there is a possibility the deck
suspension is badly worn or bent. Replace the parts as
necessary.
Adjusting Front-to-Rear Pitch
The blade should be 7/16 inch (10.9mm) lower when it
passes the front of the mower than when it passes the
rear. This measurement can be between 1/8 inch
(3.1mm) and 1/2 inch (12.7mm) low in front. If the
difference is out of this range, the mower suspension is
either worn or bent. Straighten or replace as needed.
Adjusting Blade Tracking
The blade should be a minimum of 1/8 inch (3.1mm)
above the bottom of the housing. If out of tolerance,
insert a washer or other shim between the spindle
housing and mower housing (Figure 30). Re-measure
the blade side to side. If now correct, remove the
spindle housing bolt and re-install through the housing,
shim, and spindle. Note that the blade tip will move
more than the thickness of the shim.
Figure 30
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32-inch Rear Engine Rider
The 32-inch Rear Engine Rider has been built with
various engines. However, all use the same mower
attachment and suspension (Figure 31).
Figure 31
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