Troy-Bilt J830 Benutzerhandbuch

5. 

Lubricate the engine crankshaft and the inner surface 
of the blade adapter with light oil. Slide the blade 
adapter (and wave washer, if applicable) onto the engine 
crankshaft. 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.

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.

NOTE: Several components must be removed in order to change 
the mower’s belt. See an authorized Troy-Bilt Service Dealer to 
have your belt replaced.

Batteries contain sulfuric acid which 

may cause burns. Do not short circuit or mutilate 
batteries in any way. Do not put batteries in fire as 
these may burst or release toxic materials.

Remove the ignition key.
Remove the three screws securing battery harness 
assembly to the speed control housing and place them to 
the side. 
Carefully remove the harness assembly from the speed 
control housing. See Fig. 7-2.

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3.

When removing the cutting blade for 

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.

Disconnect spark plug boot from spark plug. Turn mower 
on its side making sure that the air filter and the carburetor 
are facing up.
Remove the bolt and the blade bell support which hold the 
blade and the blade adapter to the engine crankshaft. See 
Fig. 7-1.
Remove blade and adapter from the crankshaft. See Fig. 
7-1.

IMPORTANT: When removing these items, a wave washer 
may also come off with the adapter. Be sure to include this 
washer when reassembling the blade adapter. Failure to do 
so will result in the unit not being able to change speeds.
Remove blade from the adapter for testing balance. 
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.

An unbalanced blade will cause 

excessive vibration when rotating at high speeds. It 
may cause damage to mower and could break 
causing personal injury.

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