Yard Machines 450 Tiller User Manual


 
12
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 washed 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 chain case and cause serious damage to
the unit.
BELT REPLACEMENT
Your tiller has been engineered with a belt made of
special material (Kevlar Tensile) for longer life and
better performance. It should not be replaced with an
off-the-shelf belt.
If belt replacement is required, order belt or belts by
part number from your nearest authorized dealer.
Part No. 754-0434—‘‘V’’ Belt
1. Disconnect and ground the spark plug wire against
the engine.
2. Remove the belt cover from the left side of the
tiller as follows: See Figure 8. Remove two torx
screws from the top of belt cover.
3. Remove the hex cap nut and flat washer from the
side of the belt cover. Remove the hex screw at the
bottom of the front of the cover.
4. Remove the belt keeper bracket located behind
the engine pulley by removing two hex bolts and
lock washers. See Figure 9.
5. Remove belt. Reassemble new belt, following
instructions in reverse order.
NOTE: Upon reassembly, make certain the belt is
routed over the idler pulley and inside of belt keepers
by engine pulley. See Figure 9.
Figure 8
Figure 9
TIRES
Recommended operating tire pressure is
approximately 20 p.s.i. (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.
SECTION 10: OFF-SEASON STORAGE
If the tiller will not be used for a period longer than 30
days, the following steps should be taken to prepare
the tiller for storage.
1. Clean the exterior of engine and the entire tiller
thoroughly. Lubricate the tiller as described in the
lubrication instructions.
2. We do NOT recommend the use of pressure
washers to clean your unit. They may cause
damage to electric components, spindles, pulleys,
bearings or the engine. The use of pressure
washers will result in shortened life and reduced
serviceability.
Torx Screws
Belt Cover
Hex Cap Nut
Self Tap
Screw
Engine
Pulley
Belt Keeper
Idler
Brkt.
Idler
Pulley
Rod
Brkt.