REEL CONTROL CLUTCH
ADJUSTMENT, Continued
If clutch idler is restricted from its proper function, (engaging and disengaging reel belt drive), follow these steps. Refer to figure on the previous page.
1.Make sure clutch rod is free from any restriction by moving lever arm back and forth.
2.Loosen mounting bolts for the clutch idler. If the mounting bolts are torqued too tight, it restricts idler movement.
3.Loosen the pivot bolt between the idler arm and lift strap. Any restriction at this point will cause restriction with the idler arm.
7.4— SEAT SWITCH ADJUSTMENT
The HYDRO 70 has a safety switch mounted directly to the seat bottom. The switch requires no adjustment.
If wires should become disconnected from the seat switch it prohibits other safety features from working properly.
To avoid possible serious bodily injury, before performing any adjustments, maintenance, or lubrication, place all controls in “Neutral”, lower the mowers to the ground, engage parking brake, turn ignition switch off and remove key.
7.5—HEIGHT OF CUT ADJUSTMENT
The height of cut is variable and adjusted by moving the front and rear roller brackets to the desired height.
It is important to get all rollers adjusted to the same height, keeping the bed knife parallel to the ground, so that there will be uniform cutting on the entire width of the mower. Do not adjust rollers by sight.
After loosening adjusting nuts on each side of the reel assembly, place a gauge plate under the bedknife and roller measuring the distance between bedknife cutting edge and the rollers. Adjust front and rear rollers equally and insure that the bottom of the bedknife is parallel with the ground. After height of cut setting is determined,
NOTE
A height of cut tool, Part #070009 (shown below), complete with instructions, is available through the National Mower Parts Department.
ROLLER ADJUSTERS
BED BAR
BED
KNIFE
BAR 
ROUND HEAD |
| HEX HEAD |
SCREW | WINGNUT | CAPSCREW |
INSTRUCTIONS:
1.Preparation of
Position hex head capscrew 1/8 less than desired height of cut. Measure from flat surface of bar to the top of the hex head capscrew. Lock hex head capscrew in position with wing nut.
2.Setting height of
Adjust front and rear roller adjusters so that the rollers contact bar. Check roller placement for the full length of the cutting unit by moving the bar side to side while still located on the bedknife/bedbar to achieve consistent height of cut the full width of the cutting unit. Lock roller adjusters in place.
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