Ariens 912 - Manual (Page 18)

Lubrication and Maintenance (Continued)
With Speed Selector in neutral “N”, remove five
cap screws holding friction wheel to hub. (If
necessary, use a 5/8" wrench on brake drum end
of hex shaft to keep friction wheel from rotating.)
Remove cap screw and lock washer that secures
ball joint to sliding fork and remove ball joint
from fork.
Remove cotter pin from brake rod and rod from
clutch brake bellcrank.
Remove master link from roller chain.
Remove two cap screws that secure carrier
bracket to frame, rotate lower end of carrier out
of frame and tie or brace it up.
Remove lock nut securing brake drum to hex
shaft. (Use a 5/8” wrench on brake drum end of
hex shaft to keep it from rotating.) Remove brake
drum and key from shaft.
On sprocket end of hex shaft, remove four lock
nuts that secure bearing flanges to frame.
Pull hex shaft from sprocket end far enough to
remove friction wheel and hub.
Install new friction wheel in reverse order being
sure that all hardware is tightened securely.
A
A
WARNING: Stop engine, remove key, wait
for moving parts to stop and remove wire
from spark plug before attempting any
maintenance procedures.
CAUTION: Wear of mower blade will cause
structural weakness. DO NOT install new
or replacement vanes on worn blades.
Figure 11: Mower Blade
A
CAUTION: After installation of new friction
wheel, check neutral setting, clutch and
brake adjustment per instructions in Ad­
justments section of this manual.
Mower Blade
A CAUTION: Use sturdy gloves or padding to
protect hands when working with mower
blades.
Regularly check mower blades (vanes if used) for
wear and that lock washer is fully compressed
by nut (requires 50-60 ft. lbs of torque on nuts).
When blade needs sharpening, block blade to
prevent rotation, remove nut, lock washer and
blade from shaft.
Sharpen both ends of blade at original angle (25
degrees), removing equal amounts of material
from each end to maintain proper blade balance.
New blades are balanced to within 1.3 inch
ounces at factory, DO NOT grind around corner
at tip of blade. If cutting edge of blade cannot be
sharpened in a straight line to within 1/8 of an
inch of its end, replace blade with Ariens
replacement blade only. Blades are available
through your Ariens Dealer.
Install blade, lock washer and tighten nut until
lock washer is fully compressed (requires 50-60
ft. lbs. of torque on nuts).
IMPORTANT: If mower is used under sandy soil
conditions, replace blades when air lifts become
eroded through at end.
16