Havener Belt-Drive Mowers 32, 36, 48 & 52 - Manual (Page 12)

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Changing The Height Of Cut:
DANGER: BEFORE MAKING ANY ADJUSTMENTS AND/OR SERVICING YOUR MOWER, MAKE SURE
THE MOWER IS ON LEVEL GROUND, BLADES DISENGAGED, KEYS REMOVED, AND THE ENGINE OFF
WITH THE SPARK PLUG WIRE(S) REMOVED FROM THE SPARK PLUGS(S) TO PREVENT ACCIDENTAL
CONTACT.
When your mower is shipped from the factory, the mowing height is set at 3”. The mowing height may be raised
or lowered using a combination of front wheel spacers and blade bolt assembly spacers. It is recommended
that you first set your height of cut to the highest level using the blade spacers and then lower the height of cut
using the front wheel spacers.
Measuring The Height Of Cut:
DANGER: BEFORE MAKING ANY ADJUSTMENTS AND/OR SERVICING YOUR MOWER, MAKE SURE
THE MOWER IS ON LEVEL GROUND, BLADES DISENGAGED, KEYS REMOVED, AND THE ENGINE OFF
WITH THE SPARK PLUG WIRE(S) REMOVED FROM THE SPARK PLUGS(S) TO PREVENT ACCIDENTAL
CONTACT.
CAUTION Beware of the cutting edges on the blades. The rotation of one blade may cause the other
blade(s) to rotate. Always wear work gloves when handling blades.
Park the mower on level ground.
With the blade control lever in the “OFF” position, the engine off with the key removed, and the spark
plug wire (s) removed from the spark plug(s), reach through the discharge chute and slowly rotate the blade
so that the length of the blade is going from the front of the mower towards the rear.
Using a tape measure or small ruler, measure the distance from the front tip of the blade’s cutting edge to the
ground. As a general rule, if measuring the cutting height on a hard surface such as concrete, the mower will
usually mow about 1/4” lower in grass due to the weight of the machine.
Removing And Adjusting The Blades:
CAUTION Beware of the cutting edges on the blades. The rotation of one blade may cause the other
blade(s) to rotate. Always wear work gloves when handling blades.
Park the mower on level ground and block the rear wheels to prevent accidental rollback.
Raise the front end of the mower using a jackstand
Using two (2) 15/16” box end wrenches, use one wrench to loosen nut “A” while holding blade bolt “C” with the
other wrench (Figure 6).
Slide the blade bolt down through the mower deck and out.
To raise the blades to the height desired, remove the appropriate amount of spacers from the blade bolt.
Example: If the height of cut needs to be raised 1/2”, move two (2) of the 1/4” spacers “B” on each blade from
underneath the mower (Figure 6) to the top of the mower (Figure 7).
Reinsert the blade bolt through the cutting deck.
Install the blade spacers that were removed, back onto the blade bolt followed by the nut and tighten (Figure 6).
IMPORTANT: The amount of spacers should always be the same on each blade bolt. Never put the spacers
below the blade.
Adjusting The Front Wheels: (refer to Figure 8)
Raise and support the front of the mower with a jackstand.
While supporting the front wheel with one hand, remove the flip pin from the wheel shaft.
Remove the wheel from the front wheel support arm being careful not to loose the spacers.
Remove the amount of spacers desired to lower the height of cut.
Reinsert the wheel through the support arm.
Reinstall the spacers on the top that were removed from the bottom and then secure with the flip pin.
To raise the height, repeat steps 1-3, but take the spacers from the top of the wheel support arm, and put
them on the bottom.
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