Bolens 840 thru 849 - Manual (Page 18)

WHEELS
The front wheels may be provided with grease fittings.
Lubricate at least once a season with aulDmotive
multi-purpose grease.
PIVOT POINTS
Lubricate all pivot points with light oil at least once a
season.
BALL JOINTS
The ball joints and drag link ends are pern anently
lubricated.
BLADE SPINDLES
The blade spindles on the cutting deck are perma­
nently lubricated.
MAINTENANCE
A
WARNING: Disconnect the spark plug
wire(s) and ground against the engine
before performing any adjus ments,
repairs or maintenance.
TROUBLE SHOOTING
Refer to the chart on page 22 for troubie s looting
information.
ENGINE
Refer to the separate engine manuai for engine
maintenance instructions.
Maintain engine oii as instructed in the separate
engine manual packed with your unit. Read and fol­
low instructions carefuiiy.
Service air cleaner every 25 hours under nornal con­
ditions. Clean every few hours under extreme y dusty
condition. To service the air cleaner, refer to tf e sepa­
rate engine manual packed with your unit.
The spark plugs should be cleaned and the g ip reset
once a season. Spark plug replacement is recom­
mended at the start of each mowing seasor; check
engine manual for correct plug type and gap specifica­
tions.
CLEANING ENGINE AND DECK
Any fuel or oil spilled on the machine should bs wiped
off promptly. Grass, leaves, and other dirt must not be
allowed to accumulate around the cooling fin; of the
engine or on any part of the machine.
Clean the underside of the deck after each mo ving.
CUniNG BLADES
A
WARNING: Protect hands by usinri heavy
gloves or a rag to grasp the cutting
blades.
The blades may be removed for sharpening or
replacement as follows:
46" Deck
Remove the hex flange nut that holds the blade to the
blade spindle. See figure 21 A.
50" Deck
1. Remove the 3/8" bolt and lock washer holding the
blade and adapter to the blade spindle.
2. Remove the blade and adapter from the blade
spindle.
3. Remove the two 5/16" bolts, lock washers and
nuts holding the blade to the adapter. See figure
21B.
FIGURE 21B.—50" Deck
Both Decks
When sharpening the blades, follow the original angle
of grind as a guide. It is extremely important that
each cutting edge be ground equally to prevent an
unbalanced blade. An unbalanced blade will cause
excessive vibration when rotating at high speeds, may
cause damage to the mower and could break, causing
personal injury.
The blade can be tested for balance by balancing it on
a round shaft screwdriver. Remove metal from the
heavy side until it balances evenly.
When replacing the blade, be sure to install the blade
with the side of the blade marked “Bottom” (or with
part number) facing the ground when the mower is in
the operating position.
18