Muffler, Spark plug, Transmission – Poulan HDF550K User Manual
Page 12: Cleaning, Service and adjustments, Tiller, To adjust handle height (see fig. 15), Tine arrangement, Customer responsibilities
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CUSTOMER RESPONSIBILITIES
MUFFLER
Do not operate tiller without muffler. Do not tamper with 
exhaust system. Dam aged mufflers or spark arresters could 
create a fire hazard. Inspect periodically and replace if 
necessary. If your engine is equipped with a spark arrester 
screen assembly, remove every 50 hours for cleaning and 
inspection. Replace if damaged.
SPARK PLUG
Replace spark plugs at the beginning of each tilling season
or afterevery 50 hours of use, whichever comes first. Spark 
plug type and gap setting are shown in “PRODUCT SPECI
FICATIONS” on page 3 of this manual.
TRANSMISSION
Your transmission is sealed and will not require lubrication
unless serviced.
CLEANING
Do not clean your tiller when the engine and transmission are 
hot. We do not recommend using pressurized water (garden 
hose, etc.) to clean your unit unless the gasket area around
the transmission and the engine muffler, air filter and 
carburetorare covered to keep water out. Waterin engine will 
shorten the useful life of your tiller.
• 
Clean engine, wheels, finish, etc. of ail foreign matter.
•
Keep finished surfaces and wheels free of all gasoline, 
oil, etc.
•
Protect painted surfaces with automotive type wax.
SERVICE AND ADJUSTMENTS
A
CAUTSON: Disconnect spark plug wire from spark plug and place wire where it cannot come into 
contact with plug.
TILLER
TO ADJUST HANDLE HEIGHT (SEE FIG. 15)
Factory assembly has provided lowest handle height. Se
lect handle height best suited for your tilling conditions. 
Handle height will be different when tiller digs into soil.
•
If a higher handle height is desired, loosen the four nuts
securing handle panel to engine brackets.
•
Slide handle panel to desired location.
•
Tighten the four nuts securely.
MID-WIDTH TILLING - 24" PATH (See Fig. 17)
•
Assemble holes “A” in tine hubs to holes “C” in tine shaft.
NARROW TILLING/CULTIVATING -12-3/4" PATH (See 
Fig. 18)
• Remove outer tines.
TINE ARRANGEMENT
You router tines can be assembled in several different ways 
to suit your tilling or cultivating needs.
A
CAUTION: Tines are sharp. Wear gloves 
or other protection when handling tines.
NORMAL TILLING - 26" PATH (See Fig. 16)
•
Assemble holes “A” in tine hubs to holes “B” in tine shaft.
12
NOTE: When reassembling outer tines, be sure right tine
assembly (marked “R”) and left tine assembly (marked “L”) 
are mounted to correct side of tine shaft.