Tanaka THT-2520 - Manual (Page 15)

Nikko Tanaka Engineering U.S.A. ,Ltd.• 1028 4th Street SW, Bldg B • Auburn, WA 98001 • Phone: (253) 333-1200 • Fax: (253) 333-1212
Model & Serial:
All THT, HTD, HTS, TPH hedgetrimmer models.
All units after serial number Y004401
Reason:
All future production of hedgetrimmer models will utilize a blade-retaining nut
that is of the locking variety. These nuts are oblong on one side to prevent
loosening during use, but can be removed and re-installed without losing their
locking ability.
When adjusting blade-fastening hardware, thread the bolt (18) through the
blades and guide bar from the bottom, to a point where the flat washer (17), is
still able to rotate, (usually to seat, and then backed off between ¼ and ½
revolution). Then install the lock nuts on the topside, tightening them while
holding the bolt in place. Tighten all nuts, and then re-check for adjustment prior
to operation. A lubricating agent, such as WD-40 should also be used to prevent
sap build-up and premature wear.
Part Number Changes:
Old Part # New Part # Description
Remarks
123-33202-200 123-3317A-20 Lock Nut Reference #19
TECHNICAL SERVICE BULLETIN NUMBER PI 3119
Date: January, 2002