Yard-Man 13875-9 - Replacing Blade; Spark Plug

FIGURE 18. AIR CLEANER
3. Keep the engine’s air cooling fins clean.
4. Keep the underside of the mower deck clean.
BE SURE that blades are securely fastened
and are kept sharp.
NOTE
Whenever the spark plug is removed
for cleaning, it is advisable to re¬
place the spark plug gasket with a
new gasket.
FIGURE 19. SPARK PLUG CLEARANCE
5. Each time you use the rider be sure you check
the condition of the nuts, bolts, cotter pins,
etc. to be sure alt are tight and secure
properly.
6. The transaxte transmission is pre-lubricated
at the factory. Check the oil level every 25
hours by removing the oil fill plug. If the oil is
below the level of the plug opening, fill to that
level with SAE 90 extra heavy duty
transmission oil.
Transmission oil should be changed every 50
hours of operation or once each season.
7. The disc brake pads wear and may require
replacing occasionally. This replacement is
best done by a qualified service dealer.
REPLACING BLADE
Before beginning work on the cutter
blade, remove the spark plug from
the cylinder.
Removing and Sharpening Blades. Remove the
center bolt and lockwasher. See figure 20. Pull the
blade and blade adapter from the blade spindle.
The adapter can be removed from the blade by
removing the two adapter bolts, lockwashers and
nuts.
A CAUTION
Brakes should be kept in good oper¬
ating condition to avoid possible in¬
jury or damage to the operator or
tractor.
8. S h ould excessive vibration develop, check for
the cause immediately. Check for a damaged
blade, damaged bearing shaft, frayed belt, an
obstruction, etc. DO NOT operate the rider
again until the cause is found and corrected.
SPARK PLUG
The spark plug gap should be cleaned and reset to
a 0.030-inch clearance once a season (see figure
19). Spark plug replacement Is recommended at
the start of each mowing season.
FIGURE 20. BLADE REMOVAL
13