White Outdoor Series 900 Operator's Manual page 13

Blade Care
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. Remove the bolt and the blade bell support which
hold the blade and the blade adapter to the engine
crankshaft. See Figure 13.
2. Remove blade and adapter from the crankshaft.
3. The blade may be resharpened by removing it and
either grinding or filing the cutting edge keeping as
close to the original bevel as possible. Do not attempt
to sharpen the blade while it is still on the mower.
4. It is extremely important that each cutting edge
receives an equal amount of grinding to prevent an
unbalanced blade.
NOTE: Improper blade balance will result in excessive
vibration causing eventual damage to the engine and
mower. Be sure to carefully balance blade after sharpen-
ing. Possible damage resulting from blade unbalance
condition is not the responsibility of the manufacturer.
NOTE: Always remove blade from the adapter for testing
balance.
5. The blade can be tested for balance by balancing it
on a round shaft screwdriver. Remove metal from the
heavy side until it balances evenly.
6 Before reassembling the blade and the blade adapter
to the unit, lubricate the engine crankshaft and the
inner surface of the blade adapter with light oil.
7. Install the blade adapter on the crankshaft with the
"star" away from the engine. See Figure 13. Place
the blade with the side marked "bottom" (or with part
number) facing away from the adapter. Align the blade
bell support over the blade with the tabs in the holes
of the blade and insert the hex bolt.
8. Tighten the hex bolt to the torque listed below:
Blade Mounting Torque
Center Bolt 450 in. lb. min., 600 in.lb. max.
To insure safe operation of your unit, ALL nuts and bolts
must be checked periodically for correct tightness.
Belt Care
1. Disconnect the spark plug wire and ground it against
the engine.
2. Drain the fuel tank or place a piece of plastic beneath
the cap to prevent gasoline leakage.
3. Place shift lever in the first position and tip the mower
on its side. (air cleaner side of engine up).
4. Remove the blade and blade adapter as described
previously.
5. Move rear height adjuster to the highest position.
6. Using a 3/8" socket remove three hex screws holding
the baffle to the deck. See Figure 13.
7. Pivot baffle towards the rear of the mower. See Figure 14.
8. Remove the hex bolt holding the transmission to the
mower housing. See Figure 14.
Figure 13
Figure 14
Figure 15
9. Tilt the transmission forward and loosen the idler
pulley bolt and locknut ½ turn using two 7/16"
wrenches. See Figure 15.
13
6
Maintenance
WARNING
When removing the
cutting blade or belt,
protect your hands
with a pair of heavy
gloves or use a heavy
rag to hold the blade.
An unbalanced blade
will cause excessive
vibration when rotat-
ing at high speeds. It
may cause damage
to mower, and could
break causing per-
sonal injury.
We do not recommend
the use of pressure
washers or garden
hose to clean your
unit. These may cause
damage to electrical
components, spindles,
pulleys, bearings, or
the engine. The use
of water will result in
shortened life and
reduce serviceability.