Service; Blade Care - Troy-Bilt TB350 Operation Manual

Service

Blade Care

WARNING:
sharpening or replacement, protect your hands with
a pair of heavy gloves or use a heavy rag to hold the
blade.
Periodically inspect the blade adapter for cracks, especially if you
strike a foreign object. Replace when necessary. Follow the steps
below for blade service.
1. Disconnect spark plug boot from spark plug. Turn mower
on its side making sure that the air filter and the carburetor
are facing up.
2. Remove the bolt and the blade bell support which hold the
blade and the blade adapter to the engine crankshaft. See
Figure 7-1.
Blade Bell
Support
3. Remove blade from the adapter for testing balance.
4. Balance the blade on a round shaft screwdriver to check.
Remove metal from the heavy side until it balances evenly.
When sharpening the blade, follow the original angle of
grind. Grind each cutting edge equally to keep the blade
balanced.
WARNING:
excessive vibration when rotating at high speeds. It
may cause damage to mower and could break
causing personal injury.
18
When removing the cutting blade for
Blade
Adapter
Blade
Bolt
Figure 7-1
An unbalanced blade will cause
5. Place the blade on the adapter such that the side of the
blade marked "Bottom" (or with part number) faces the
ground when the mower is in the operating position. Make
sure that the blade is aligned and seated on the blade
adapter flanges. See Figure 7-1 inset.
6. Place blade bell support on the blade. Align notches on the
blade bell support with small holes in blade.
7. Replace hex bolt and tighten hex bolt to torque: 450 in. lbs.
min., 600 in. lbs. max.
To ensure safe operation of your mower, periodically check the
blade bolt for correct torque.
Belt Care
NOTE: Several components must be removed in order to change
the mower's belt. See an authorized Service Dealer to have your
belt replaced.
7