Yard Machines 390 - Manual (Page 12)

12
SECTION 5: MAKING ADJUSTMENTS
WARNING: Disconnect the spark plug
wire and ground against the engine before
performing any adjustments, repairs, or
maintenance.
Tine Width Adjustment
The tilling width of the unit is 22 inches. See Figure 15.
Tilling width can be increased to 24 inches by removing
the clevis pins and hairpin clips, sliding the outer tines
out one inch, and securing in this position with the
clevis pins and hairpin clips. See Figure 15. For
cultivation, reduce the tine width to 13 inches by
removing the outer tines completely.
Wheel Adjustments
To adjust the wheel yoke and wheel position, refer to
OPERATING YOUR TILLER in Section 4.
Depth Stake Adjustment
To adjust the depth stake, refer to OPERATING YOUR
TILLER in Section 4.
Figure 15
Clutch Control Adjustments
To adjust the clutch controls, refer to the Final
Adjustment section of 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.
Minor carburetor adjustment may be required to
compensate for differences in fuel, temperature,
altitude or load. If adjustments are needed, refer to the
engine manual packed with the tiller.
NOTE: A dirty air cleaner will cause engine to run
rough. Be certain air cleaner is clean and attached to
the carburetor before adjusting carburetor. Do not
make unnecessary adjustments. Factory settings are
satisfactory for most applications and conditions.
22”
24”
13”