MTD 410 Thru 420 - Manual (Page 11)

11
To adjust the tension on the belt, refer to final clutch
adjustment in Assembly Instructions.
Carburetor Adjustment
WARNING: If any adjustments are made to
the engine while the engine is running,
(e.g. carburetor), disengage all clutches
and tines. Keep clear of all moving parts.
Be careful of heated surfaces and muffler.
Never make unnecessary adjustments. The factory
settings are correct for most applications. If
adjustments are needed, refer to the separate engine
manual packed with your tiller.
SECTION 6: SERVICE
Transmission—The transmission is pre-lubricated and
sealed at the factory. It requires no checking unless the
transmission is disassembled. To fill with grease, lay
the right half of the transmission on its side. Add 22
ounces of Benalene 920 grease. Assemble the left half
to it. This grease can be obtained at your nearest
authorized dealer. Order part number 737-0300. Clutch Handle—Lubricate the pivot point on the clutch
handle and the cable at least once a season with light
oil. The control must operate freely in both directions.
Pivot Points—Lubricate all pivot points and linkages at
least once a season with light oil.
Tine Shafts—Remove tine assemblies and lubricate
the tine shafts at least once a season.
Wheel Shafts—Remove wheel assemblies and
lubricate the axle shafts at least once a season.
SECTION 7: MAINTAINING YOUR TILLER
WARNING: Disconnect the spark plug wire
and ground it against the engine before
performing any repairs or maintenance.
Engine
Refer to the separate engine manual for engine
maintenance instructions.
Maintain engine oil as instructed in the separate
engine manual packed with your unit. Read and follow
instructions carefully.
Service air cleaner every ten hours under normal
conditions. Clean every hour under extremely dusty
conditions. Poor engine performance and flooding
usually indicates that the air cleaner should be
serviced. To service the air cleaner, refer to the
separate engine manual packed with your unit.
IMPORTANT: Never run your engine without air cleaner
completely assembled.
The spark plug should be cleaned and the gap reset
every 25 hours of engine operation. Spark plug
replacement is recommended at the start of each tiller
season; check engine manual for correct plug type and
gap specification.
Clean the engine regularly with a cloth or brush. Keep
the cooling system (blower housing area) clean to
permit proper air circulation which is essential to engine
performance and life. Be certain to remove all dirt and
combustible debris from muffler area.
Cleaning The Tine Area
Clean the underside of the tine shield after each use.
The dirt washes off the tines easier if rinsed off
immediately instead of after it dries. Always towel dry
the tiller afterwards and apply a light coat of oil or
silicone to prevent rusting or water damage.
IMPORTANT: Never use a "pressure" washer to clean
your tiller. Water can penetrate tight areas of the tiller
and its chaincase and cause serious damage to the
unit.
Tires
Recommended operating tire pressure is
approximately 14 p.s.i. on 14 inch tires and 20 p.s.i. on
16 inch tires. (Check sidewall of tire for tire
manufacturer’s recommended pressure). Maximum tire
pressure under any circumstances is 30 p.s.i. Equal tire
pressure should be maintained on both tires.
When installing a tire to the rim, be certain rim is clean
and free of rust. Lubricate both the tire and rim
generously. Never inflate to over 30 p.s.i. to seat beads.
WARNING: Excessive pressure (over 30
p.s.i.) when seating beads may cause tire/
rim assembly to burst with force sufficient
to cause serious injury.