17
Balancing the Blade
1.
Check the balance of the blade by placing the center
hole of the blade over a nail or a screwdriver shank
clamped horizontally in a vise (Fig. 27).
1007
Figure 27
2.
If either end of blade rotates downward, grind or file
that end (not the cutting edge or the end near the
cutting edge). The blade is properly balanced when
neither end drops.
Installing the Blade
1.
Ensure that the blade driver (Fig. 25) is installed on
the crankshaft.
2.
Locate the blade over the lugs of the blade driver with
the curved ends toward the housing.
3.
Torque the blade bolt to 60 to 70 ft-lb (82 to 96 N
m).
Lubricating the Wheels
1.
Wipe the grease fittings (Fig. 28) with a clean rag.
1195
1
Figure 28
1. Grease fitting
2.
Apply grease into each fitting until the grease appears
around the wheel attachment bolt.
Adjusting the Self-propel Cable
Model 22243 only
Whenever you change the handle height, install a new
self-propel cable, or if the traction drive belt slips, adjust
the self-propel cable.
Adjust the self-propel cable at the left handle bracket by
moving the cable jacket held by jam nuts (Fig. 29).
1131
2
1
2
3
Figure 29
1. Cable jacket
2. Jam nut
3. Spring
1.
Hold the self-propel bail 1 to 1
!
/
2
in. (25 to 38 mm)
from the handle.
2.
Adjust the jam nuts at the handle bracket so that the
cable is tight without stretching the spring.
3.
Tighten the jam nuts securely.
4.
Release the bail and ensure that the cable is loose.
Note:
The cable must be loose when you release the
self-propel bail or the lawn mower may creep forward
when the bail is in the disengaged position.
Cleaning the Cooling System
After every 100 operating hours or every season, clean the
dirt and the chaff from the cylinder, the cylinder head fins,
and around the carburetor and the linkage. Remove debris
from the air intake slots on the recoil housing. This will
ensure proper cooling and the best engine performance.