Wheel Drive Control Adjustment - Snapper NP2167519B Safety Instructions & Operator's Manual

Maintenance (Continued)
WARNING
!
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Blade Sharpening (Continued)
4. Sharpen the blade on a grinding wheel at an angle of 22
to 28 degrees (B, Figure 23). DO NOT sharpen the blade
beyond the original cutting edge (A).
Do not sharpen
beyond original
cutting edge
A
Figure 23: Sharpening the mower blade
5. Check blade for balance. If necessary, correct balance by
grinding heavy end of blade.
6. Reinstall blade (B, Figure 22). Note the correct
assembly order:
(A) Blade hub
(B) Blade
(C) Blade flange (facing up)
(D) Cone washer (concave side up)
(E) Capscrew
7. Check torque of blade retaining cap screw.
Recommended torque should be 40 ft. lbs.

Wheel Drive Control Adjustment

(Self-Propelled Models Only)
1. The wheel drive control is properly adjusted when there
is 1/16" to 1/8" clearance (G, Figure 24) between the
inside of the spring hook (E) and the inside of the clutch
cable eye (C) with the wheel drive control released.
!
22-28 0
B
End view of
blade assembly
B
G
D
F
D
Figure 24: Wheel drive control adjustment
2. To adjust, unhook the upper spring (D) from the cable
eye and rotate the spring in the direction required to
extend or shorten the spring length.
3. Rehook the upper spring to the cable eye and check
clearance. Repeat the procedure if required.
Note: The vinyl spring cover (B) should be kept over the
spring at all times except for adjustments.
4. If the wheel drive control fails to return quickly to the
"OFF" position when released, check for binding at the
cable holdings located on the side of the right handle.
The upper clip should be located 2" below the upper
knob; the lower clip should be 4" above the lower knob.
The cable should slide freely with the clips installed at
these locations.
A
C
E
A
C
13