Bolens 130-527-000 - Manual (Page 16)

MAINTENANCE
A
WARNING: Disconnect the spark plug
wire and ground against the ergine
before performing any repairs or
maintenance.
TROUBLE SHOOTING
Refer to page 19 of this manual for trouble shooting
information.
CRANKCASE OIL
Check the oil level in the crankcase before eacii use
of the machine and after every five hours of operc ition.
Oil level should be maintained as instructed in the
separate engine manual.
After the first five hours of operating a new engine, drain
the oil from the crankcase while engine is still ho : and
refill crankcase with new oil; thereafter change the oil
every 25 hours of operation. Refer to the er gine
manual.
AIR CLEANER
Under normal operating conditions, the air cleiiner,
located on top of the carburetor, must be serviced after
every ten hours of use. Under extremely dusty
operating conditions, the air cleaner must be sen'iced
after every hour of operation. To service the air cle aner,
refer to the separate engine manual packed with your
unit.
CLEANING ENGINE AND BLADE HOUSING
Any fuel or oil spilled on the machine should be v iped
off promptly. Grass, leaves, and other dirt must not be
left to accumulate around the cooling fins of the engine
or on any part of the machine.
Clean the underside of the blade housing after sach
mowing.
SPARK PLUG
The spark plug should be cleaned and the gap i eset
once a season. Spark plug replacement is recomrr end­
ed at the start of each mowing season; check ergine
manual for correct plug type and gap specificat on.
CUniNG BLADE
A. Removal for Sharpening or Replacement
A
WARNING: Be sure to disconnect and
ground the spark plug wire and remove
ignition key before working on the cu :ting
blade to prevent accidental engine star­
ting. Protect hands by using heavy gloves
or a rag to grasp the cutting blade: >.
1. Remove the large bolt and lock washer which f lolds
the blade and adapter to the blade spindle.
2. Remove the blade and adapter from the spindle.
3. If the blade or blade adapter needs replacing,
remove the two small bolts, lock washers and nuts
which hold the blade and blade spacers (if so
equipped) to the adapter.
B. Sharpening
Remove the cutting blade by following the directions
of the preceding section.
When sharpening the blade, follow the original angle
of grind as a guide. It is extremely important that each
cutting edge receives an equal amount of grinding 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.
NOTE: It is recommended that the blade always be
removed from the adapter for the best test of balance.
C. Reassembly
Before reassembling the blade and the blade adapter
to the unit, lubricate the spindle and the inner surface
of the blade adapter with light oil. Lubricating the bolt
holes, bolts and inner surface of the nuts with light oil
is also recommended. A 4 oz. plastic bottle of light oil
lubricant is available. Order part number 737-0170.
Engine oil may also be used.
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.
Blade Mounting Torque
3/8" Dia. Bolt 375 in. lb. min., 450 in. lb. max.
5/16" Dia. Bolt 150 in. lb. min., 250 in. lb. max.
To insure safe operation of your unit, ALL nuts and bolts
must be checked periodically for correct tightness.
BELT REMOVAL AND REPLACEMENT
Preparation
A
WARNING: Disconnect the spark plug
wire and ground it against the engine.
1. To prevent gasoline from leaking from the engine,
remove the gasoline cap, place a piece of plastic
film on the neck of the gasoline tank and screw on
the cap.
2. Remove the grass catcher.
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