Troy-Bilt 31/2 HP - Manual (Page 39)

MAINTENANCE
Photo 5-42: Removing the drive pin retaining bolts.
2. Slide the cutter blade assembly sideways through
the blade guides and out of the cutter bar.
Photo 5-43: Removing the cutter bar.
To install the cutter blade assembly:
1. From either side, slide the cutter blade assembly
into the cutter bar assembly.
HINTS
• Thoroughly oiling the cutter blade assembly
before installing it in the cutter bar assembly
will help it slide into place more smoothly.
• When pushing the cutter blade assembly into
the outter bar assembly, frequently check to
make sure that neither the end of the cutter
blade assembly nor the cutter blade assem­
bly’s wear plates are hanging up and pre­
venting the cutter blade assembly from sliding
into place.
2. Place the drive pin on top of the cutter blade
assembly. Align the bolt holes in the drive pin’s base
with the two bolt holes in the cutter blade assembly.
3. Install the two 8 MM x 20 MM bolts and lockwashers
into the holes. Very securely tighten the two bolts with
the 13 MM (or the ’/i-inch) wrench.
Tightening a Loose Individuai Blade Section or
Ledger Plate
NOTES
• A “ledger plate” is a single “knife” blade on
the ledger bar (the lower stationary bar).
• A “blade section” is a single “knife” blade on
the cutter bar assembly (the upper bar that
oscillates when you engage the Blade Drive
Lever).
• Although the term “blade section” appears
throughout this instruction, the same proce­
dure is used when tightening a ledger plate.
You’ll need a hammer and either a center punch or
a flat punch to tighten a loose individual blade section.
1. Remove the cutter bar assembly from the mower.
See Page 34 for instructions.
ACAUTION
When working on or near the cutter bar blade
assembly, wear heavy leather gloves to help pre­
vent the blades from accidentally pinching or cut­
ting your fingers or hands.
Failure to do this could result in personal injury.
2. Remove the cutter blade assembly from the cutter
bar assembly. See Page 36 for instructions.
3. Place the portion of the blade that has the loose
rivet onto a very sturdy and secure steel object. You’ll
be using this steel object as an anvil, so it will need to
be extremely sturdy and secure.
À CAUTION
Wear safety glasses or safety goggles to protect
your eyes when tightening the blade’s rivets.
Failure to do so could result in personal injury.
4. Position the punch in the middle of the counter­
sunk part of the rivet as shown in Photo 5-44.
5. Strike the punch with the hammer.
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