Adjusting the Front-to-Rear
Blade Slope
Chec k the front-to-rear blade lev el any time y ou
install the mo w er . If the front of the mo w er is
more than 5/16 inc h (7.9 mm) lo w er than the
rear of the mo w er , adjust the blade lev el using the
follo wing instr uctions:
1. P osition the mo w er on a flat surface .
2. Diseng ag e the blade control switc h and mo v e
the control lev ers to the neutral loc k ed position
and apply the parking brak e .
3. Stop the engine , remo v e the k ey , and w ait for
all mo ving par ts to stop before lea ving the
operating position.
4. Chec k the air pressure of all four tires . If
needed, adjust to the recommended inflation;
refer to Tire Pressure .
5. Chec k and adjust the side-to-side blade lev el
if y ou ha v e not c hec k ed the setting; refer to
Lev eling the Mo w er from Side-to-Side .
6. Measure the length of the rear tr union rod
( Figure 43 ). If the rod length is not 11-1/2 inc h
(29.2 cm), remo v e the clevis pin and cotter
pin from the end of the rod ( Figure 43 ),
loosen the jam n ut, and tur n the y ok e until the
11-1/2 inc h (29.3 cm) dimension is obtained.
7. T hen secure the y ok e with the clevis pin and
cotter pin. R e peat this procedure on the
opposite side of the mo w er .
Figure 43
1. Rear trunion rod
3. Jam nut
2. Clevis pin and cotter pin 4. Yoke
8. Set the height-of-cut at 3 inc h (76 mm) and
carefully rotate the blades so they are facing
front to rear ( Figure 44 ).
9. Measure betw een the tip of the front blade
( Figure 44 ) and the tip of the rear blade to
the flat surface . If the front blade tip is not
1/16-5/16 inc h (1.6-7.9 mm) lo w er than the
rear blade tip , adjust the front tr union rods .
Figure 44
1. Blade front to rear 3. Measure rear blade tip
2. Measure front blade tip 4. Measure here
10. T o adjust the front-to-rear blade slope , remo v e
the hair pin cotter from the front tr union y ok es
and loosen the jam n uts ( Figure 45 ).
Figure 45
1. Front trunion rod yoke
3. Jam nut
2. Hairpin cotter
11. R otate the y ok es on the rods to c hang e the
adjustment ( Figure 45 ). T o raise the front
of the mo w er , tighten the y ok es (shor ten the
rods). T o lo w er the front of the mo w er , loosen
the y ok es (lengthen the rods).
12. After adjusting both tr union rod y ok es ev enly ,
secure the y ok es with the hair pin cotters .
Chec k the front-to-rear lev el ag ain. Contin ue
adjusting the y ok es until the front blade tip is
1/16-5/16 inc h (1.6-7.9 mm) lo w er than the
rear blade tip ( Figure 44 ).
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