Maintenance
Mower Blade Replacement |
| A | |
! | WARNING | ! | B |
| |||
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. Wear heavy leather gloves when |
| ||
handling or working around cutting blades. Blades are | C | ||
extremely sharp and can cause severe injury. |
| ||
|
| ||
Standard Blade Wear Limit |
|
|
|
|
|
|
|
| ||||
|
|
|
|
| Figure 19: Ninja blade wear limits | |||||||
1. Inspect the blade (Figure 18) frequently for signs |
|
|
|
|
|
| ||||||
| of excessive wear or damage: |
|
|
|
| Blade Sharpening |
|
|
| |||
| (A) New blade |
|
|
|
|
|
|
| ||||
| (B) Wear limit (notch starts) |
|
|
|
| 1. Disconnect the spark plug wire and secure the end | ||||||
| (C) Dangerous condition! Do not use on the |
| away from the plug. |
|
|
| ||||||
| mower! Replace with a new blade. | 2. Tilt the mower up its rear wheels. Do not tilt the | ||||||||||
|
|
|
|
|
|
|
| mower with the spark plug or carburetor down. | ||||
| A |
|
|
|
| IMPORTANT: Dra n the fuel tank before tipping the | ||||||
|
|
|
|
|
|
| m wer. DO NOT | the machine with the carburetor or | ||||
|
|
|
|
|
|
| spark plug down. O l from the crankcase will saturate | |||||
|
| B |
|
|
|
| ||||||
|
|
|
|
|
| the air filter and | ause the engine to be hard to start or | |||||
|
|
|
|
|
|
| not start at all. If | ontamination does occur, the air filter | ||||
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
| will have to be replaced. |
|
|
| ||
|
|
|
|
| C |
|
|
|
| |||
|
|
|
|
|
| 3. Remove the blade (B, Figure 20). | ||||||
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Make sure that |
|
|
|
|
|
|
|
|
|
|
|
| blade hub is seated |
|
| Figure 18: Standard blade wear limits |
|
|
|
| between flanges |
| |||||
Ninja Blade Wear Limit |
|
|
|
|
|
|
| A | ||||
|
|
|
|
|
|
| C | |||||
1. Inspect the blade (Figure 20) frequently for signs |
|
|
| |||||||||
| of excessive wear or damage: | Reproduction |
|
|
| |||||||
| (A) New blade |
|
|
| ||||||||
| (B) Wear limit (cracks or notches begin to appear |
|
|
|
|
|
| |||||
| on tip) |
|
|
|
|
|
| B |
|
|
| |
| (C) Dangerous condition! Do not use on the |
|
|
|
|
| ||||||
| mower! Replace with a new blade. |
|
|
|
|
|
| |||||
! | WARNING | ! | D | |
E | ||||
DO NOT use a cutting blade that shows signs of |
| |||
excessive wear or damage. Refer to the Section enti- | Figure 20: Removing the mower blade | |||
tled “MOWER BLADE REPLACEMENT” for proper | ||||
blade inspection and service procedures. |
|
| ||
en
21
