Yard Machines 520 Lawn Mower User Manual


 
13
THROTTLE CONTROL ADJUSTMENT
If the throttle control requires adjustment or if it has
been replaced and need adjustment, proceed as
follows:
Figure 12
1. Remove the screw shown in Figure 12. Remove
the cable clamp from the cable.
NOTE: If you have a Tecumseh engine, simply
loosen the screw so the cable will move freely
beneath the clamp. It is not necessary to remove
the screw and clamp completely.
2. Push the throttle control lever on the handle all
the way forward as far as it will go, then back it
off one "click". Make certain the throttle control
lever remains in this position.
3. Push the control lever on the engine as far
toward the rear of the engine as it will go.
Secure the cable in this position with the cable
clamp and screw.
CARBURETOR ADJUSTMENTS
WARNING:
If any adjustments are
made to the engine while the engine is
running (e.g. carburetor), keep clear of all
moving parts. Be careful of heated
surfaces and muffler.
Minor carburetor adjustments may be required
to compensate for differences in fuel,
temperature, altitude and load. To adjust
carburetor, refer to the separate engine manual
packed with your mower.
NOTE: A dirty air cleaner will cause an engine to
run rough. Be certain air cleaner is clean and
attached to the carburetor before adjusting
carburetor.
SECTION 8: MAINTENANCE
LUBRICATION
Figure 13
WARNING: Always stop engine and
disconnect spark plug wire before
cleaning, lubricating or doing any kind of
work on lawn mower.
Blade Control
Lubricate the pivot points on the blade control
handle and the brake cable at least once a season
with light oil. See Figure 13. The blade control must
operate freely in both directions.
Chute Deflector
Lubricate the torsion spring and pivot point
periodically with light oil to prevent any rust or
binding. Deflector must work freely.
Wheels
If your lawn mower has ball bearing wheels,
lubricate at least once a season with light oil (or
engine oil). Also, if the wheels are removed for any
reason, lubricate the surface of the axle bolt and the
inner surface of the wheel.
Engine
Follow engine manual for lubrication instructions.
Screw
Cable
Clamp
Control
Lever
Lube
Lube
Lube
Lube