27
HYDRO
MIDSIZE
SPINDLE BLADE BRAKE:
First adjust engine to cutter deck belt tension and
over-center. Adjust blade brake as follows:
When blade control lever is disengaged (pulled fully
back) brake rod (X) should be centered in slot (Y).
With blade control lever engaged and engine stopped,
the brake band should not contact the braking surface.
Brake should stop blades from full speed in 5 seconds
or less. If it does not, adjust or replace worn blade
brake parts. Brake must be adjusted each time
clutching belt is adjusted. Make sure brake does not
bind.
• KEEP BLADE BRAKE FREE OF OIL, GREASE
AND WATER.
OVER-CENTER ADJUSTMENT AT
TURNBUCKLE:ENGINE TO CUTTER DECK BELT
The over-center adjustment should be checked when-
ever the belt tension is adjusted and reset with enough
over-center to keep the belt engaged. Belt tension
should be set to 10 lb at 1/2" (for 54") and 10 lb at 1/
2" (for 61") deflection on longest span of belt. The
adjustment is made by turning the control rod in or out
to obtain the correct over-center measurement.
• Too much over-center movement makes it hard to
engage and disengage the cutter drive and may
cause the rods in the blade control linkage to bend.
It also puts excess stress on the belt during
engagement and disengagement. Too little over-
center movement may allow the cutter drive to jump
out of engagement during use.
Check all belt tensions twice during the first 8 hours of
use and then every 50 hours. If necessary, adjust as
detailed on following pages.
HYDRO DRIVE BELT
Belt is tensioned by a spring loaded idler and should
not require adjustment.
ENGINE TO CUTTER DECK BELT
With the blade control lever engaged, tension is
correct when the longest span of the belt can be
deflected 1/2" with an 10 lbs force.
1. With the engine off, engage the blade control lever.
2. Loosen jam nuts (E) on turnbuckle.
3. Rotate turnbuckle to obtain the correct belt tension.
4. Tighten jamnuts against turnbuckle. NOTE: One
side of turnbuckle has left hand threads.
5. Readjust over center and blade brake as detailed
on this page.
BELT ADJUSTMENTS
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