Bolens 416 - Manual (Page 11)

11
Figure 10
• Reassemble the upper handle.
• Place the hairpin clips in the inner holes of the weld
pins and replace the carriage bolts and wing nuts
on the handle brackets. Attach the starter rope as
instructed in the Assembly section.
Cutting Height
An adjusting plate and thumb lever at each wheel
position provides cutting height adjustment. Each
adjusting plate has nine height positions.
• Simply depress the lever towards wheel and move
it to any of the nine positions for the desired cutting
height. See Figure 11. All four levers on the four
wheels must be placed in the same relative position
for uniform cutting height
Figure 11
Carburetor
Minor carburetor adjustments may be required to
compensate for differences in fuel, temperature,
altitude and load. To adjust carburetor, refer to the
engine manual.
NOTE: A dirty air cleaner will cause an engine to run
rough. Be certain air cleaner is clean and attached to
the carburetor before adjusting carburetor.
SECTION 7: MAINTAINING YOUR LAWN MOWER
Maintaining the Blade
• Periodically inspect the blade adapter for cracks,
especially if you strike a foreign object. Replace
when necessary.
• Remove the bolt and bell support which hold the
blade and adapter to the engine crankshaft. See
Figure 12 . Remove the blade and adapter from the
crankshaft.
Figure 12
• When sharpening the blade, follow the original
angle of grind as a guide. It is extremely important
that each cutting edge receive an equal amount of
grinding to prevent an unbalanced blade. An
unbalanced blade will cause excessive vibration
when rotating at high speeds, and may cause
damage to the mower and/or personal injury.
Lower
Handle
Notch
WARNING: If any adjustments are made to
the engine while the engine is running (e.g.
carburetor), keep clear of all moving parts. Be
careful of heated surfaces and muffler.
Height
Adjustment
Lever
WARNING: Be sure to disconnect and
ground the spark plug wire before performing
any repairs or maintenance.
WARNING: When removing the cutting
blade for sharpening or replacement, protect
hands by using heavy gloves or a rag to grasp
the cutting blade.
Blade
Adapter
Bell
Support
Hex Bolt
Blade
Crankshaft