Table of Contents
Advertisement
CAUTION
POTENTIAL HAZARD
Someone could accidentally start the engine.
WHAT CAN HAPPEN
Accidental starting of engine could cause
serious injury to operator or bystanders.
HOW TO AVOID THE HAZARD
Do not attempt to inspect, remove or replace
blade without first removing the spark plug
wire from spark plug and fastening it away
from accidental contact with spark plug.
4. INSPECTING BLADE—Carefully examine blade for
sharpness and wear, especially where flat and curved
parts meet (Fig. 25A). Since sand and abrasive
material can wear away the metal that connects the flat
and curved parts of the blade, check blade before using
the mower. If a slot or wear is noticed, (Fig. 25B & C),
replace blade. Refer to step 5.
Figure 25
1. Sail
2. Flat part of blade
Note: For best performance, install new blade before
cutting season begins. During the year, file down small
nicks to maintain the cutting edge.
DANGER
POTENTIAL HAZARD
A worn or damaged blade could break and a
piece of blade could be thrown into operator's
or bystander's area.
WHAT CAN HAPPEN
A thrown piece of blade could cause serious
personal injury or death to operator or
bystanders.
HOW TO AVOID THE HAZARD
Inspect blade periodically for wear or damage.
Replace a worn or damaged blade.
1
2
1
3
1
4
270
3. Wear
4. Slot formed
5. REMOVING BLADE—Grasp end of blade using a rag
or thickly padded glove. Remove blade nuts, anti-scalp
cup, accelerator, and blade (Fig. 24).
6. SHARPENING BLADE—Using a file, sharpen top
side of blade and maintain original cutting angle
(Fig. 26). The blade will remain balanced if same
amount of material is removed from both cutting
edges.
1
1. Sharpen at this angle only
IMPORTANT: Check balance of blade by putting it on
a blade balancer. An inexpensive balancer can be
purchased at a hardware store. A balanced blade stays
in a horizontal position and an unbalanced blade settles
to the heavy side. If blade is not balanced, file more
metal off cutting edge on heavy end of blade.
7. Reinstall sharp, balanced blade, blade accelerator,
anti-scalp cup, and blade nuts. Sail part of blade must
point toward top of mower housing to assure correct
installation. Tighten blade nuts to 15–27 ft–lbs (20–37
N m).
WARNING
POTENTIAL HAZARD
Operating mower without accelerator in place
could cause blade to flex, bend or break.
WHAT CAN HAPPEN
A broken blade could cause serious injury or
death to operator or bystanders.
HOW TO AVOID THE HAZARD
Do not operate mower without accelerator.
Lubrication
After every 25 operating hours or when season ends, pivot
arms must be lubricated.
1. Move rear wheel height-of-cut levers to center setting.
Wipe grease fittings with clean rag (Fig. 27). Install
grease gun onto fitting and gently apply 2 or 3 pumps
of #2 Multi-Purpose Lithium Base Grease. Excessive
grease pressure may damage seals.
16
Figure 26
153
Advertisement
Table of Contents
