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 21). DO NOT sharpen the blade beyond the original cutting edge (A).
Do not sharpen beyond original cutting edge
G |
D |
F |
D |
A |
B |
C |
E |
A |
C |
B
End view of blade assembly
A
Figure 21: Sharpening the mower blade
5.Check blade for balance. If necessary, correct balance by grinding heavy end of blade.
6.Reinstall blade (B, Figure 20). 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.
Figure 22: 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.
Maintenance
Wheel Drive Control Adjustment
1.The wheel drive control is properly adjusted when there is 1/16” to 1/8” clearance (G, Figure 22) between the inside of the spring hook (E) and the inside of the clutch cable eye (C) with the wheel drive control released.
15
